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| Gretna Monthly & Yearly Data (1997 - Present) | |||||||||||||
| 2010 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| Average High (°F) | 23.0 | 28.9 | 49.4 | 68.2 | 71.3 | 83.2 | 85.5 | 87.8 | |||||
| Average Low (°F) | 11.7 | 13.9 | 32.2 | 46.4 | 51.6 | 64.1 | 68.5 | 67.6 | |||||
| Mean Temperature (°F) | 17.4 | 21.4 | 40.8 | 57.3 | 61.5 | 73.7 | 77.0 | 77.7 | |||||
| Temp Anomaly (°F) | -4.4 | -6.6 | 1.5 | 5.9 | -0.8 | 1.5 | 0.3 | 3.2 | |||||
| Warmest Day (°F) | 42 | 38 | 78 | 85 | 89 | 93 | 94 | 96 | |||||
| Coldest Day (°F) | -11 | -4 | 15 | 31 | 38 | 52 | 63 | 57 | |||||
| Total Precipitation (in) | 1.04 | 0.91 | 1.95 | 3.97 | 3.05 | 10.82 | 6.23 | 3.99 | |||||
| Precip Anomaly (in) | 0.27 | 0.11 | -0.18 | 1.03 | -1.39 | 6.87 | 2.37 | 0.78 | |||||
| Wettest Day (in) | 0.28 | 0.30 | 0.91 | 1.43 | 0.83 | 2.06 | 3.06 | 1.33 | |||||
| Snowfall (in) | 9.4 | 11.1 | 5.6 | 0.0 | ------ | ------ | ------ | ------ | |||||
| Snowfall Anomaly (in) | 3.1 | 5.2 | 1.1 | -1.2 | ------ | ------ | ------ | ------ | |||||
| Snowiest Day (in) | 4.2 | 3.8 | 4.1 | 0.0 | ------ | ------ | ------ | ------ | |||||
| High Dewpoint (°F) | 42 | 36 | 49 | 65 | 73 | 81 | 85 | 83 | |||||
| Low Dewpoint (°F) | -19 | -11 | 12 | 17 | 24 | 45 | 56 | 50 | |||||
| High Barometer (mb) | 1042 | 1030 | 1031 | 1028 | 1030 | 1028 | 1023 | 1024 | |||||
| Low Barometer (mb) | 993 | 1013 | 994 | 985 | 997 | 998 | 1003 | 1000 | |||||
| Avg Wind Speed (mph) | 6.4 | 6.3 | 7.6 | 7.8 | 6.9 | 5.7 | 4.6 | 5.0 | |||||
| High Wind Gust (mph) | 43 | 41 | 37 | 41 | 44 | 54 | 50 | 33 | |||||
| Thunder Days | 0 | 0 | 0 | 3 | 8 | 13 | 9 | 5 | |||||
| 2009 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| Average High (°F) | 33.0 | 41.3 | 50.6 | 61.0 | 74.2 | 80.5 | 80.4 | 80.4 | 74.7 | 54.2 | 55.2 | 27.6 | 59.4 |
| Average Low (°F) | 11.4 | 19.7 | 29.0 | 39.3 | 52.5 | 62.2 | 62.4 | 61.7 | 54.3 | 38.5 | 35.6 | 12.6 | 39.9 |
| Mean Temperature (°F) | 22.2 | 30.5 | 39.8 | 50.2 | 63.4 | 71.4 | 71.4 | 71.1 | 64.5 | 46.4 | 45.4 | 20.1 | 49.7 |
| Temp Anomaly (°F) | 0.5 | 2.5 | 0.5 | -1.3 | 1.2 | -0.9 | -5.3 | -3.4 | -0.9 | -6.9 | 7.4 | -5.5 | -1.0 |
| Warmest Day (°F) | 56 | 64 | 77 | 88 | 88 | 97 | 91 | 95 | 81 | 71 | 73 | 57 | 97 |
| Coldest Day (°F) | -15 | 3 | 0 | 20 | 41 | 48 | 54 | 46 | 39 | 26 | 21 | -9 | -15 |
| Total Precipitation (in) | 0.35 | 1.01 | 1.06 | 2.24 | 1.71 | 7.27 | 2.93 | 5.24 | 2.68 | 3.86 | 0.16 | 3.07 | 31.58 |
| Precip Anomaly (in) | -0.42 | 0.21 | -1.07 | -0.70 | -2.73 | 3.32 | -0.93 | 2.03 | -0.49 | 1.65 | -1.66 | 2.15 | 1.36 |
| Wettest Day (in) | 0.10 | 0.44 | 0.53 | 1.22 | 0.61 | 2.19 | 0.83 | 1.32 | 2.12 | 1.06 | 0.14 | 1.04 | 2.19 |
| Snowfall (in) | 6.5 | 12.5 | 0.0 | 2.5 | ------ | ------ | ------ | ------ | ------ | 4.4 | 0.0 | 31.5 | 57.4 |
| Snowfall Anomaly (in) | 0.2 | 6.6 | -4.5 | 1.3 | ------ | ------ | ------ | ------ | ------ | 4.1 | -3.4 | 26.0 | 30.3 |
| Snowiest Day (in) | 2.2 | 7.0 | T | 2.5 | ------ | ------ | ------ | ------ | ------ | 4.0 | 0.0 | 12.5 | 12.5 |
| High Dewpoint (°F) | 35 | 52 | 57 | 65 | 68 | 82 | 80 | 80 | 72 | 62 | 57 | 34 | 82 |
| Low Dewpoint (°F) | -24 | -8 | -8 | 9 | 25 | 34 | 49 | 46 | 32 | 18 | 17 | -16 | -24 |
| High Barometer (mb) | 1051 | 1041 | 1045 | 1029 | 1029 | 1024 | 1022 | 1026 | 1025 | 1034 | 1032 | 1041 | 1051 |
| Low Barometer (mb) | 1002 | 990 | 992 | 1000 | 999 | 1000 | 1005 | 1002 | 999 | 993 | 1000 | 993 | 990 |
| Avg Wind Speed (mph) | 7.5 | 7.8 | 8.7 | 8.2 | 7.1 | 5.0 | 4.6 | 5.3 | 4.0 | 6.9 | 6.1 | 8.0 | 6.6 |
| High Wind Gust (mph) | 49 | 50 | 53 | 48 | 42 | 41 | 50 | 39 | 40 | 44 | 38 | 50 | 53 |
| Thunder Days | 0 | 1 | 3 | 3 | 6 | 13 | 7 | 8 | 3 | 3 | 0 | 0 | 47 |
| 2008 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| Average High (°F) | 29.9 | 32.0 | 48.8 | 58.1 | 71.0 | 81.9 | 86.2 | 84.1 | 74.7 | 64.7 | 47.8 | 33.0 | 59.4 |
| Average Low (°F) | 11.8 | 13.5 | 26.5 | 36.9 | 49.6 | 61.6 | 66.4 | 63.0 | 54.5 | 44.7 | 30.3 | 12.1 | 39.2 |
| Mean Temperature (°F) | 20.9 | 22.8 | 37.7 | 47.5 | 60.3 | 71.8 | 76.3 | 73.6 | 64.6 | 54.7 | 39.1 | 22.6 | 49.3 |
| Temp Anomaly (°F) | -0.8 | -5.3 | -1.7 | -3.9 | -1.9 | -0.5 | -0.4 | -1.0 | -0.8 | 1.5 | 1.1 | -3.1 | -1.4 |
| Warmest Day (°F) | 55 | 50 | 69 | 78 | 88 | 91 | 92 | 97 | 88 | 85 | 78 | 58 | 97 |
| Coldest Day (°F) | -8 | -8 | -1 | 24 | 36 | 54 | 57 | 53 | 42 | 26 | 7 | -10 | -10 |
| Total Precipitation (in) | 0.38 | 0.73 | 1.35 | 4.64 | 6.77 | 9.61 | 5.19 | 0.95 | 4.49 | 6.97 | 1.35 | 1.00 | 43.43 |
| Precip Anomaly (in) | -0.39 | -0.07 | -0.78 | 1.70 | 2.33 | 5.66 | 1.33 | -2.26 | 1.32 | 4.76 | -0.47 | 0.08 | 13.21 |
| Wettest Day (in) | 0.09 | 0.28 | 0.90 | 1.25 | 1.76 | 2.30 | 2.85 | 0.48 | 2.35 | 1.81 | 0.75 | 0.49 | 2.85 |
| Snowfall (in) | 7.4 | 6.4 | 1.0 | 0.4 | ------ | ------ | ------ | ------ | ------ | 0.0 | 0.4 | 6.6 | 22.2 |
| Snowfall Anomaly (in) | 1.1 | 0.5 | -3.5 | -0.8 | ------ | ------ | ------ | ------ | ------ | -0.3 | -3.0 | 1.1 | -4.9 |
| Snowiest Day (in) | 2.7 | 4.5 | 0.5 | 0.3 | ------ | ------ | ------ | ------ | ------ | 0.0 | 0.3 | 2.4 | 4.5 |
| High Dewpoint (°F) | 43 | 38 | 51 | 65 | 73 | 78 | 81 | 83 | 74 | 66 | 61 | 52 | 83 |
| Low Dewpoint (°F) | -15 | -20 | -14 | 13 | 25 | 39 | 45 | 49 | 40 | 9 | 3 | -19 | -20 |
| High Barometer (mb) | 1050 | 1043 | 1035 | 1032 | 1025 | 1022 | 1020 | 1024 | 1026 | 1038 | 1041 | 1044 | 1050 |
| Low Barometer (mb) | 988 | 990 | 997 | 990 | 989 | 990 | 1003 | 1002 | 1004 | 1006 | 997 | 990 | 988 |
| Avg Wind Speed (mph) | 7.4 | 7.6 | 7.7 | 9.6 | 8.1 | 6.1 | 5.6 | 4.5 | 3.8 | 7.4 | 8.2 | 8.6 | 7.1 |
| High Wind Gust (mph) | 42 | 45 | 42 | 45 | 53 | 63 | 49 | 30 | 39 | 55 | 44 | 45 | 63 |
| Thunder Days | 0 | 0 | 1 | 3 | 10 | 15 | 9 | 3 | 6 | 3 | 1 | 1 | 52 |
| 2007 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| Average High (°F) | 31.1 | 29.6 | 56.8 | 60.5 | 76.2 | 82.4 | 87.7 | 86.9 | 78.0 | 67.4 | 50.6 | 31.5 | 61.6 |
| Average Low (°F) | 14.9 | 14.2 | 36.5 | 39.4 | 56.1 | 62.2 | 67.8 | 68.2 | 55.2 | 47.3 | 28.9 | 15.6 | 42.2 |
| Mean Temperature (°F) | 23.0 | 21.9 | 46.7 | 50.0 | 66.2 | 72.3 | 77.8 | 77.6 | 66.6 | 57.4 | 39.8 | 23.6 | 51.9 |
| Temp Anomaly (°F) | 1.3 | -6.1 | 7.4 | -1.5 | 4.0 | 0.1 | 1.1 | 3.1 | 1.2 | 4.2 | 1.8 | -2.1 | 1.2 |
| Warmest Day (°F) | 54 | 55 | 80 | 88 | 89 | 90 | 97 | 95 | 88 | 87 | 74 | 52 | 97 |
| Coldest Day (°F) | -9 | -7 | 9 | 17 | 41 | 52 | 57 | 58 | 39 | 34 | 10 | 6 | -9 |
| Total Precipitation (in) | 0.84 | 1.46 | 5.43 | 3.65 | 6.72 | 1.32 | 1.25 | 8.03 | 2.88 | 5.13 | 0.06 | 2.13 | 38.90 |
| Precip Anomaly (in) | 0.07 | 0.66 | 3.30 | 0.71 | 2.28 | -2.63 | -2.61 | 4.82 | -0.29 | 2.92 | -1.76 | 1.21 | 8.68 |
| Wettest Day (in) | 0.41 | 0.90 | 1.75 | 2.15 | 1.63 | 0.89 | 0.57 | 1.70 | 1.96 | 1.57 | 0.04 | 0.95 | 2.15 |
| Snowfall (in) | 11.8 | 12.3 | 13.0 | 0.0 | ------ | ------ | ------ | ------ | ------ | 0.0 | 0.4 | 11.5 | 49.0 |
| Snowfall Anomaly (in) | 5.5 | 6.4 | 8.5 | -1.2 | ------ | ------ | ------ | ------ | ------ | -0.3 | -3.0 | 6.0 | 21.9 |
| Snowiest Day (in) | 7.0 | 5.5 | 12.3 | 0.0 | ------ | ------ | ------ | ------ | ------ | 0.0 | 0.4 | 5.0 | 12.3 |
| High Dewpoint (°F) | 41 | 39 | 66 | 61 | 69 | 74 | 77 | 83 | 76 | 74 | 61 | 52 | 83 |
| Low Dewpoint (°F) | -19 | -18 | 2 | 0 | 28 | 34 | 50 | 48 | 33 | 17 | 0 | 1 | -19 |
| High Barometer (mb) | 1043 | 1033 | 1032 | 1032 | 1029 | 1021 | 1021 | 1026 | 1029 | 1037 | 1036 | 1036 | 1043 |
| Low Barometer (mb) | 1000 | 994 | 991 | 997 | 1002 | 986 | 1004 | 1001 | 1003 | 985 | 1004 | 996 | 985 |
| Avg Wind Speed (mph) | 8.7 | 8.2 | 8.9 | 9.5 | 8.3 | 7.0 | 5.9 | 5.8 | 7.8 | 7.4 | 7.2 | 5.5 | 7.5 |
| High Wind Gust (mph) | 46 | 46 | 56 | 41 | 44 | 48 | 43 | 52 | 49 | 38 | 42 | 43 | 56 |
| Thunder Days | 0 | 1 | 7 | 4 | 9 | 5 | 8 | 11 | 3 | 7 | 0 | 0 | 55 |
| 2006 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| Average High (°F) | 47.0 | 41.4 | 48.6 | 67.9 | 76.3 | 85.4 | 89.7 | 83.3 | 72.6 | 60.1 | 51.5 | 43.5 | 63.9 |
| Average Low (°F) | 26.9 | 18.3 | 30.3 | 45.5 | 53.8 | 63.2 | 68.3 | 65.2 | 52.6 | 40.5 | 29.9 | 24.6 | 43.3 |
| Mean Temperature (°F) | 37.0 | 29.9 | 39.5 | 56.7 | 65.1 | 74.3 | 79.0 | 74.3 | 62.6 | 50.3 | 40.7 | 34.1 | 53.6 |
| Temp Anomaly (°F) | 15.3 | 1.9 | 0.2 | 5.3 | 2.8 | 2.2 | 2.3 | -0.3 | -2.8 | -2.9 | 2.8 | 8.5 | 2.9 |
| Warmest Day (°F) | 66 | 67 | 74 | 87 | 92 | 98 | 102 | 99 | 91 | 91 | 81 | 59 | 102 |
| Coldest Day (°F) | 18 | -6 | 18 | 30 | 41 | 51 | 55 | 54 | 41 | 25 | 9 | 3 | -6 |
| Total Precipitation (in) | 0.87 | 0.09 | 2.83 | 3.72 | 1.08 | 1.98 | 2.64 | 8.75 | 4.24 | 0.95 | 0.11 | 2.63 | 29.89 |
| Precip Anomaly (in) | 0.10 | -0.71 | 0.70 | 0.78 | -3.36 | -1.97 | -1.22 | 5.54 | 1.07 | -1.26 | -1.71 | 1.71 | -0.33 |
| Wettest Day (in) | 0.57 | 0.06 | 1.13 | 1.29 | 0.42 | 0.67 | 1.26 | 3.18 | 1.24 | 0.23 | 0.03 | 0.85 | 3.18 |
| Snowfall (in) | 0.1 | 1.8 | 12.2 | 0.0 | ------ | ------ | ------ | ------ | ------ | 0.0 | 0.0 | 4.7 | 18.8 |
| Snowfall Anomaly (in) | -7.9 | -4.7 | 5.3 | -1.5 | ------ | ------ | ------ | ------ | ------ | -0.5 | -3.5 | -0.8 | -13.6 |
| Snowiest Day (in) | 0.1 | 1.0 | 5.5 | 0.0 | ------ | ------ | ------ | ------ | ------ | 0.0 | 0.0 | 4.7 | 5.5 |
| High Dewpoint (°F) | 46 | 36 | 62 | 65 | 74 | 73 | 80 | 85 | 72 | 68 | 58 | 52 | 85 |
| Low Dewpoint (°F) | 6 | -19 | 12 | 12 | 24 | 40 | 47 | 48 | 32 | 7 | -4 | -7 | -19 |
| High Barometer (mb) | 1033 | 1048 | 1034 | 1027 | 1024 | 1022 | 1025 | 1022 | 1023 | 1028 | 1035 | 1050 | 1050 |
| Low Barometer (mb) | 993 | 999 | 993 | 985 | 998 | 1000 | 1000 | 1001 | 987 | 997 | 995 | 1003 | 985 |
| Avg Wind Speed (mph) | 8.5 | 7.9 | 9.8 | 8.9 | 8.9 | 6.5 | 5.7 | 5.7 | 7.1 | 7.6 | 8.9 | 7.0 | 7.7 |
| High Wind Gust (mph) | 46 | 38 | 52 | 50 | 40 | 44 | 52 | 44 | 42 | 40 | 35 | 43 | 52 |
| Thunder Days | 2 | 0 | 3 | 5 | 8 | 10 | 7 | 12 | 3 | 0 | 1 | 0 | 51 |
| 2005 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| Average High (°F) | 28.9 | 43.3 | 53.7 | 65.6 | 73.5 | 84.9 | 88.9 | 85.0 | 83.2 | 66.8 | 53.1 | 32.4 | 63.3 |
| Average Low (°F) | 14.2 | 24.7 | 28.9 | 44.6 | 51.0 | 65.4 | 67.7 | 64.9 | 58.9 | 44.0 | 32.1 | 17.8 | 42.9 |
| Mean Temperature (°F) | 21.6 | 34.0 | 41.3 | 55.1 | 62.3 | 75.2 | 78.3 | 75.0 | 71.1 | 55.4 | 42.6 | 25.1 | 53.1 |
| Temp Anomaly (°F) | -0.1 | 6.1 | 2.1 | 3.7 | 0.0 | 3.0 | 1.7 | 0.5 | 5.6 | 2.2 | 4.7 | -0.5 | 2.4 |
| Warmest Day (°F) | 53 | 63 | 77 | 81 | 89 | 96 | 101 | 94 | 98 | 91 | 80 | 69 | 101 |
| Coldest Day (°F) | -10 | 4 | 12 | 28 | 32 | 57 | 51 | 53 | 37 | 27 | 12 | -7 | -10 |
| Total Precipitation (in) | 1.16 | 3.48 | 0.80 | 4.79 | 4.42 | 2.92 | 3.18 | 2.08 | 0.62 | 1.13 | 1.70 | 0.88 | 27.16 |
| Precip Anomaly (in) | 0.39 | 2.68 | -1.33 | 1.85 | -0.02 | -1.03 | -0.68 | -1.13 | -2.55 | -1.08 | -0.12 | -0.04 | -3.06 |
| Wettest Day (in) | 0.79 | 2.68 | 0.20 | 1.25 | 2.15 | 0.53 | 1.53 | 0.91 | 0.15 | 0.35 | 0.72 | 0.25 | 2.68 |
| Snowfall (in) | 15.0 | 7.7 | 0.5 | 0.0 | ------ | ------ | ------ | ------ | ------ | T | 7.0 | 6.6 | 36.8 |
| Snowfall Anomaly (in) | 7.0 | 1.2 | -6.4 | -1.5 | ------ | ------ | ------ | ------ | ------ | 0.0 | 3.5 | 1.1 | 4.4 |
| Snowiest Day (in) | 14.0 | 4.4 | 0.5 | 0.0 | ------ | ------ | ------ | ------ | ------ | T | 3.5 | 4.0 | 14.0 |
| High Dewpoint (°F) | 42 | 45 | 53 | 65 | 67 | 76 | 82 | 77 | 72 | 71 | 59 | 40 | 82 |
| Low Dewpoint (°F) | -17 | 0 | 6 | 10 | 16 | 49 | 47 | 48 | 28 | 23 | -4 | -14 | -17 |
| High Barometer (mb) | 1050 | 1032 | 1027 | 1026 | 1026 | 1021 | 1027 | 1028 | 1028 | 1030 | 1036 | 1043 | 1050 |
| Low Barometer (mb) | 1001 | 997 | 988 | 998 | 1000 | 999 | 1004 | 1004 | 1005 | 1007 | 985 | 1006 | 985 |
| Avg Wind Speed (mph) | 7.1 | 6.5 | 8.7 | 9.3 | 9.1 | 8.3 | 6.5 | 5.0 | 7.3 | 7.1 | 9.2 | 7.8 | 7.7 |
| High Wind Gust (mph) | 54 | 43 | 59 | 44 | 44 | 49 | 38 | 42 | 41 | 43 | 50 | 44 | 59 |
| Thunder Days | 0 | 0 | 2 | 6 | 6 | 10 | 6 | 5 | 3 | 2 | 1 | 0 | 41 |
| 2004 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| Average High (°F) | 30.3 | 33.5 | 53.6 | 66.4 | 75.1 | 78.7 | 82.1 | 80.5 | 82.1 | 65.5 | 50.9 | 40.5 | 61.6 |
| Average Low (°F) | 13.3 | 17.3 | 34.4 | 42.4 | 53.6 | 59.3 | 64.3 | 60.2 | 57.8 | 44.5 | 33.5 | 21.4 | 41.8 |
| Mean Temperature (°F) | 21.2 | 25.4 | 44.0 | 54.4 | 64.4 | 69.0 | 73.2 | 70.4 | 70.0 | 55.0 | 42.2 | 31.0 | 51.7 |
| Temp Anomaly (°F) | -0.4 | -2.6 | 4.8 | 3.0 | 2.1 | -3.2 | -3.5 | -4.2 | 4.5 | 1.8 | 4.3 | 5.4 | 1.0 |
| Warmest Day (°F) | 60 | 54 | 75 | 89 | 89 | 88 | 94 | 94 | 94 | 80 | 76 | 65 | 94 |
| Coldest Day (°F) | -12 | -4 | 19 | 27 | 32 | 48 | 53 | 49 | 38 | 29 | 13 | -3 | -12 |
| Total Precipitation (in) | 1.79 | 1.49 | 3.44 | 1.40 | 3.93 | 4.40 | 4.34 | 1.47 | 4.31 | 0.58 | 2.34 | 0.31 | 29.80 |
| Precip Anomaly (in) | 1.02 | 0.69 | 1.31 | -1.54 | -0.51 | 0.45 | 0.48 | -1.74 | 1.14 | -1.63 | 0.52 | -0.61 | -0.42 |
| Wettest Day (in) | 0.79 | 0.69 | 1.20 | 1.26 | 1.17 | 2.98 | 1.87 | 0.61 | 2.88 | 0.19 | 0.91 | 0.26 | 2.98 |
| Snowfall (in) | 22.7 | 19.0 | 6.8 | 0.0 | ------ | ------ | ------ | ------ | ------ | 0.0 | 3.3 | 0.0 | 51.8 |
| Snowfall Anomaly (in) | 14.7 | 12.5 | -0.1 | -1.5 | ------ | ------ | ------ | ------ | ------ | -0.5 | -0.2 | -5.5 | 19.4 |
| Snowiest Day (in) | 8.0 | 10.0 | 3.0 | 0.0 | ------ | ------ | ------ | ------ | ------ | 0.0 | 3.3 | 0.0 | 10.0 |
| High Dewpoint (°F) | 45 | 49 | 65 | 64 | 72 | 73 | 82 | 81 | 71 | 71 | 61 | 61 | 82 |
| Low Dewpoint (°F) | -20 | -11 | 18 | 17 | 25 | 38 | 48 | 33 | 28 | 18 | 10 | -13 | -20 |
| High Barometer (mb) | 1042 | 1036 | 1041 | 1025 | 1025 | 1030 | 1027 | 1025 | 1027 | 1031 | 1038 | 1043 | 1043 |
| Low Barometer (mb) | 1001 | 995 | 991 | 995 | 990 | 998 | 1002 | 1003 | 999 | 994 | 1001 | 998 | 990 |
| Avg Wind Speed (mph) | 7.9 | 8.9 | 10.1 | 8.1 | 9.2 | 5.8 | 4.4 | 6.2 | 8.3 | 8.0 | 6.8 | 9.1 | 7.7 |
| High Wind Gust (mph) | 41 | 75 | 49 | 51 | 51 | 58 | 51 | 44 | 42 | 51 | 38 | 55 | 75 |
| Thunder Days | 0 | 1 | 3 | 2 | 14 | 4 | 14 | 5 | 3 | 2 | 0 | 0 | 48 |
| 2003 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| Average High (°F) | 32.5 | 34.4 | 52.2 | 64.1 | 70.5 | 79.4 | 89.1 | 88.7 | 75.3 | 67.9 | 46.6 | 37.3 | 61.5 |
| Average Low (°F) | 14.8 | 15.1 | 28.7 | 42.7 | 50.1 | 59.3 | 67.3 | 66.6 | 51.0 | 44.1 | 29.4 | 23.9 | 41.1 |
| Mean Temperature (°F) | 23.7 | 24.3 | 39.5 | 53.3 | 60.1 | 69.3 | 78.0 | 77.1 | 62.7 | 55.5 | 37.8 | 30.7 | 51.0 |
| Temp Anomaly (°F) | 2.0 | -3.7 | 0.3 | 1.9 | -2.1 | -2.9 | 1.3 | 2.6 | -2.7 | 2.3 | -0.2 | 5.1 | 0.3 |
| Warmest Day (°F) | 68 | 53 | 83 | 90 | 87 | 92 | 101 | 101 | 90 | 87 | 71 | 57 | 101 |
| Coldest Day (°F) | -13 | -4 | 5 | 24 | 41 | 48 | 57 | 59 | 37 | 31 | 10 | 6 | -13 |
| Total Precipitation (in) | 0.54 | 1.87 | 0.99 | 3.46 | 4.35 | 2.73 | 1.51 | 1.66 | 2.57 | 1.44 | 2.80 | 1.19 | 25.11 |
| Precip Anomaly (in) | -0.23 | 1.07 | -1.14 | 0.52 | -0.09 | -1.22 | -2.35 | -1.55 | -0.60 | -0.77 | 0.98 | 0.27 | -5.11 |
| Wettest Day (in) | 0.30 | 0.83 | 0.45 | 0.92 | 1.07 | 0.52 | 0.80 | 0.55 | 1.02 | 0.66 | 1.69 | 0.65 | 1.69 |
| Snowfall (in) | 10.0 | 14.5 | 3.9 | 8.2 | ------ | ------ | ------ | ------ | ------ | 0.0 | 0.8 | 9.7 | 47.1 |
| Snowfall Anomaly (in) | 2.0 | 8.0 | -3.0 | 6.7 | ------ | ------ | ------ | ------ | ------ | -0.5 | -2.7 | 4.2 | 14.7 |
| Snowiest Day (in) | 7.0 | 7.0 | 2.7 | 7.5 | ------ | ------ | ------ | ------ | ------ | 0.0 | 0.8 | 7.5 | 7.5 |
| High Dewpoint (°F) | 39 | 40 | 57 | 61 | 65 | 77 | 81 | 77 | 68 | 63 | 57 | 48 | 81 |
| Low Dewpoint (°F) | -21 | -12 | -7 | 17 | 34 | 40 | 49 | 50 | 28 | 22 | 2 | 1 | -21 |
| High Barometer (mb) | 1048 | 1040 | 1036 | 1034 | 1032 | 1020 | 1023 | 1027 | 1031 | 1032 | 1039 | 1038 | 1048 |
| Low Barometer (mb) | 1005 | 995 | 996 | 991 | 984 | 1000 | 1003 | 1008 | 1004 | 995 | 998 | 995 | 984 |
| Avg Wind Speed (mph) | 8.5 | 7.5 | 9.0 | 9.8 | 7.4 | 7.2 | 6.7 | 4.6 | 7.9 | 7.6 | 8.3 | 9.5 | 7.8 |
| High Wind Gust (mph) | 52 | 50 | 44 | 41 | 62 | 50 | 62 | 43 | 45 | 41 | 52 | 50 | 62 |
| Thunder Days | 0 | 0 | 2 | 6 | 9 | 11 | 8 | 7 | 3 | 2 | 4 | 0 | 52 |
| 2002 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| Average High (°F) | 39.2 | 40.6 | 44.2 | 64.9 | 71.5 | 87.5 | 91.1 | 85.2 | 78.6 | 55.6 | 48.1 | 43.2 | 62.5 |
| Average Low (°F) | 18.7 | 18.6 | 23.2 | 41.7 | 48.8 | 66.3 | 69.2 | 64.1 | 57.1 | 38.6 | 28.1 | 22.5 | 41.4 |
| Mean Temperature (°F) | 29.0 | 29.6 | 33.7 | 53.3 | 60.2 | 76.9 | 80.2 | 74.7 | 67.9 | 47.1 | 38.1 | 32.9 | 51.9 |
| Temp Anomaly (°F) | 7.3 | 1.7 | -5.6 | 1.9 | -2.1 | 4.8 | 3.5 | 0.2 | 2.4 | -6.1 | 0.1 | 7.3 | 1.3 |
| Warmest Day (°F) | 60 | 67 | 64 | 92 | 90 | 97 | 105 | 100 | 93 | 88 | 72 | 66 | 105 |
| Coldest Day (°F) | 2 | -2 | -1 | 20 | 37 | 56 | 58 | 57 | 43 | 23 | 10 | 7 | -2 |
| Total Precipitation (in) | 0.42 | 0.94 | 1.45 | 2.42 | 4.85 | 1.69 | 1.30 | 8.72 | 1.20 | 3.16 | 0.21 | 0.02 | 26.38 |
| Precip Anomaly (in) | -0.35 | 0.14 | -0.68 | -0.52 | 0.41 | -2.26 | -2.56 | 5.51 | -1.97 | 0.95 | -1.61 | -0.90 | -3.84 |
| Wettest Day (in) | 0.32 | 0.51 | 0.57 | 0.54 | 1.41 | 1.21 | 0.43 | 2.57 | 0.67 | 0.79 | 0.10 | 0.01 | 2.57 |
| Snowfall (in) | 5.0 | 9.5 | 14.6 | 0.0 | ------ | ------ | ------ | ------ | ------ | 3.5 | 1.9 | 0.1 | 34.6 |
| Snowfall Anomaly (in) | -3.0 | 3.0 | 7.7 | -1.5 | ------ | ------ | ------ | ------ | ------ | 3.0 | -1.6 | -5.4 | 2.2 |
| Snowiest Day (in) | 4.0 | 7.0 | 8.5 | 0.0 | ------ | ------ | ------ | ------ | ------ | 3.5 | 1.7 | 0.1 | 8.5 |
| High Dewpoint (°F) | 43 | 67 | 70 | 75 | 77 | 80 | 72 | 69 | 52 | 47 | 80 | ||
| Low Dewpoint (°F) | -11 | 7 | 19 | 39 | 49 | 47 | 29 | 18 | 3 | -3 | -11 | ||
| High Barometer (mb) | 1045 | 1035 | 1029 | 1022 | 1023 | 1023 | 1027 | 1036 | 1036 | 1035 | 1045 | ||
| Low Barometer (mb) | 993 | 988 | 1001 | 998 | 1003 | 1004 | 998 | 999 | 989 | 994 | 988 | ||
| Avg Wind Speed (mph) | 8.2 | 9.7 | 8.4 | 9.6 | 7.0 | 7.1 | 7.1 | 7.3 | 7.9 | 7.3 | 8.0 | ||
| High Wind Gust (mph) | 48 | 51 | 49 | 42 | 47 | 51 | 55 | 44 | 52 | 44 | 55 | ||
| Thunder Days | 0 | 0 | 1 | 4 | 9 | 5 | 10 | 11 | 4 | 4 | 0 | 0 | 48 |
| 2001 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| Average High (°F) | 33.3 | 29.2 | 43.5 | 66.9 | 73.7 | 84.2 | 88.1 | 86.9 | 75.9 | 64.9 | 60.7 | 42.1 | 62.5 |
| Average Low (°F) | 15.2 | 11.8 | 23.4 | 39.5 | 51.8 | 59.2 | 66.7 | 62.9 | 52.2 | 40.4 | 37.8 | 21.2 | 40.2 |
| Mean Temperature (°F) | 24.3 | 20.5 | 33.5 | 53.2 | 62.8 | 71.7 | 77.4 | 74.9 | 64.1 | 52.7 | 49.3 | 31.7 | 51.3 |
| Temp Anomaly (°F) | 2.6 | -7.5 | -5.8 | 1.8 | 0.5 | -0.5 | 0.8 | 0.4 | -1.3 | -0.5 | 11.3 | 6.1 | 0.7 |
| Warmest Day (°F) | 50 | 48 | 64 | 87 | 92 | 96 | 98 | 98 | 91 | 85 | 76 | 65 | 98 |
| Coldest Day (°F) | -4 | -10 | -1 | 25 | 43 | 44 | 56 | 54 | 36 | 21 | 21 | 2 | -10 |
| Total Precipitation (in) | 1.45 | 2.06 | 1.06 | 1.96 | 10.11 | 1.84 | 2.23 | 1.76 | 2.41 | 3.49 | 1.72 | 0.81 | 30.90 |
| Precip Anomaly (in) | 0.68 | 1.26 | -1.07 | -0.98 | 5.67 | -2.11 | -1.63 | -1.45 | -0.76 | 1.28 | -0.10 | -0.11 | 0.68 |
| Wettest Day (in) | 0.54 | 0.65 | 0.62 | 1.02 | 2.26 | 0.81 | 1.92 | 0.71 | 1.17 | 1.27 | 1.28 | 0.35 | 2.26 |
| Snowfall (in) | 9.1 | 13.4 | 0.6 | 1.0 | ------ | ------ | ------ | ------ | ------ | 0.0 | 0.0 | 3.1 | 27.2 |
| Snowfall Anomaly (in) | 1.1 | 6.9 | -6.3 | -0.5 | ------ | ------ | ------ | ------ | ------ | -0.5 | -3.5 | -2.4 | -5.2 |
| Snowiest Day (in) | 4.2 | 5.5 | 0.6 | 1.0 | ------ | ------ | ------ | ------ | ------ | 0.0 | 0.0 | 2.9 | 5.5 |
| Thunder Days | 0 | 2 | 0 | 12 | 11 | 6 | 11 | 3 | 6 | 4 | 1 | 2 | 58 |
| 2000 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| Average High (°F) | 37.6 | 45.3 | 55.5 | 63.6 | 78.1 | 82.9 | 85.3 | 86.1 | 80.2 | 67.0 | 41.5 | 23.2 | 62.2 |
| Average Low (°F) | 16.1 | 21.6 | 31.1 | 36.4 | 51.8 | 56.8 | 64.3 | 65.5 | 51.8 | 43.5 | 22.6 | 5.2 | 38.9 |
| Mean Temperature (°F) | 26.9 | 33.5 | 43.3 | 50.0 | 65.0 | 69.9 | 74.8 | 75.8 | 66.0 | 55.3 | 32.1 | 14.2 | 50.5 |
| Temp Anomaly (°F) | 5.2 | 5.5 | 4.1 | -1.4 | 2.7 | -2.3 | -1.9 | 1.3 | 0.6 | 2.1 | -5.9 | -11.4 | -0.1 |
| Warmest Day (°F) | 54 | 71 | 73 | 85 | 95 | 96 | 95 | 98 | 104 | 91 | 74 | 55 | 104 |
| Coldest Day (°F) | 1 | 10 | 14 | 22 | 38 | 47 | 56 | 58 | 36 | 19 | 9 | -10 | -10 |
| Total Precipitation (in) | 0.19 | 1.36 | 1.36 | 1.81 | 2.19 | 6.20 | 5.39 | 1.76 | 0.87 | 2.54 | 2.27 | 1.29 | 27.23 |
| Precip Anomaly (in) | -0.58 | 0.56 | -0.77 | -1.13 | -2.25 | 2.25 | 1.53 | -1.45 | -2.30 | 0.33 | 0.45 | 0.37 | -2.99 |
| Wettest Day (in) | 0.08 | 0.53 | 0.53 | 0.47 | 0.75 | 1.66 | 1.46 | 0.78 | 0.41 | 1.21 | 1.17 | 0.41 | 1.66 |
| Snowfall (in) | 1.1 | 8.0 | 0.2 | 0.2 | ------ | ------ | ------ | ------ | ------ | 0.0 | 4.3 | 20.7 | 34.5 |
| Snowfall Anomaly (in) | -6.9 | 1.5 | -6.7 | -1.3 | ------ | ------ | ------ | ------ | ------ | -0.5 | 0.8 | 15.2 | 2.1 |
| Snowiest Day (in) | 0.8 | 5.0 | 0.2 | 0.2 | ------ | ------ | ------ | ------ | ------ | 0.0 | 2.5 | 6.0 | 6.0 |
| Thunder Days | 0 | 2 | 1 | 5 | 8 | 11 | 12 | 7 | 4 | 4 | 2 | 1 | 57 |
| 1999 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| Average High (°F) | 30.2 | 44.1 | 49.6 | 60.1 | 72.3 | 79.7 | 88.8 | 82.3 | 74.6 | 65.5 | 58.8 | 40.0 | 62.2 |
| Average Low (°F) | 12.3 | 24.2 | 26.4 | 40.3 | 49.8 | 59.1 | 66.9 | 60.4 | 48.6 | 37.6 | 33.0 | 20.2 | 39.9 |
| Mean Temperature (°F) | 21.3 | 34.2 | 38.0 | 50.2 | 61.1 | 69.4 | 77.9 | 71.4 | 61.6 | 51.6 | 45.9 | 30.1 | 51.0 |
| Temp Anomaly (°F) | -0.4 | 6.2 | -1.3 | -1.2 | -1.2 | -2.8 | 1.2 | -3.2 | -3.8 | -1.6 | 8.0 | 4.5 | 0.4 |
| Warmest Day (°F) | 47 | 74 | 76 | 81 | 89 | 92 | 100 | 90 | 89 | 83 | 82 | 60 | 100 |
| Coldest Day (°F) | -10 | 11 | 15 | 29 | 40 | 46 | 55 | 51 | 35 | 22 | 22 | -4 | -10 |
| Total Precipitation (in) | 0.66 | 1.85 | 1.30 | 6.65 | 5.77 | 3.38 | 2.85 | 5.24 | 1.54 | 0.03 | 0.82 | 0.67 | 30.76 |
| Precip Anomaly (in) | -0.11 | 1.05 | -0.83 | 3.71 | 1.33 | -0.57 | -1.01 | 2.03 | -1.63 | -2.18 | -1.00 | -0.25 | 0.54 |
| Wettest Day (in) | 0.30 | 0.66 | 0.42 | 2.42 | 0.96 | 1.03 | 1.27 | 2.71 | 0.83 | 0.03 | 0.77 | 0.21 | 2.71 |
| Snowfall (in) | 6.9 | 21.3 | 11.1 | 0.2 | ------ | ------ | ------ | ------ | ------ | 0.0 | 0.0 | 5.3 | 44.8 |
| Snowfall Anomaly (in) | -1.1 | 14.8 | 4.2 | -1.3 | ------ | ------ | ------ | ------ | ------ | -0.5 | -3.5 | -0.2 | 12.4 |
| Snowiest Day (in) | 4.2 | 10.5 | 4.5 | 0.2 | ------ | ------ | ------ | ------ | ------ | 0.0 | 0.0 | 2.3 | 10.5 |
| Thunder Days | 0 | 1 | 1 | 7 | 8 | 6 | 8 | 6 | 5 | 2 | 0 | 1 | 45 |
| 1998 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| Average High (°F) | 33.0 | 43.3 | 38.9 | 60.6 | 76.8 | 79.3 | 87.2 | 85.4 | 82.8 | 65.8 | 52.3 | 41.0 | 62.2 |
| Average Low (°F) | 18.8 | 28.8 | 23.5 | 38.8 | 53.4 | 57.2 | 65.9 | 64.2 | 57.5 | 43.3 | 31.6 | 19.7 | 41.9 |
| Mean Temperature (°F) | 25.9 | 36.1 | 31.2 | 49.7 | 65.1 | 68.3 | 76.6 | 74.8 | 70.2 | 54.6 | 42.0 | 30.4 | 52.0 |
| Temp Anomaly (°F) | 4.3 | 8.1 | -8.1 | -1.7 | 2.9 | -3.9 | -0.1 | 0.3 | 4.8 | 1.4 | 4.0 | 4.8 | 1.4 |
| Warmest Day (°F) | 55 | 68 | 77 | 82 | 91 | 96 | 98 | 95 | 95 | 80 | 71 | 67 | 98 |
| Coldest Day (°F) | -4 | 8 | -10 | 29 | 41 | 50 | 61 | 56 | 44 | 35 | 22 | -6 | -10 |
| Total Precipitation (in) | 1.10 | 1.89 | 3.64 | 3.48 | 5.77 | 7.81 | 6.44 | 4.93 | 1.77 | 2.83 | 2.07 | 0.32 | 42.05 |
| Precip Anomaly (in) | 0.33 | 1.09 | 1.51 | 0.54 | 1.33 | 3.86 | 2.58 | 1.72 | -1.40 | 0.62 | 0.25 | -0.60 | 11.83 |
| Wettest Day (in) | 0.41 | 1.04 | 1.02 | 1.77 | 1.46 | 1.54 | 1.88 | 3.17 | 1.63 | 0.96 | 0.69 | 0.22 | 3.17 |
| Snowfall (in) | 9.8 | 4.8 | 20.5 | 0.0 | ------ | ------ | ------ | ------ | ------ | 0.0 | 0.4 | 4.6 | 40.1 |
| Snowfall Anomaly (in) | 1.8 | -1.7 | 13.6 | -1.5 | ------ | ------ | ------ | ------ | ------ | -0.5 | -3.1 | -0.9 | 7.7 |
| Snowiest Day (in) | 4.6 | 2.2 | 9.5 | 0.0 | ------ | ------ | ------ | ------ | ------ | 0.0 | 0.2 | 3.1 | 9.5 |
| Thunder Days | 1 | 1 | 2 | 6 | 11 | 16 | 8 | 8 | 3 | 3 | 1 | 0 | 60 |
| 1997 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
| Average High (°F) | 29.3 | 36.8 | 54.9 | 56.5 | 69.7 | 85.4 | 87.4 | 82.9 | 77.3 | 63.3 | 44.2 | 36.0 | 60.3 |
| Average Low (°F) | 8.7 | 22.2 | 28.2 | 36.3 | 44.5 | 60.9 | 64.9 | 62.1 | 56.1 | 43.6 | 27.2 | 24.0 | 39.9 |
| Mean Temperature (°F) | 19.0 | 29.5 | 41.6 | 46.4 | 57.1 | 73.2 | 76.2 | 72.5 | 66.7 | 53.5 | 35.7 | 30.0 | 50.1 |
| Temp Anomaly (°F) | -2.7 | 1.6 | 2.3 | -5.0 | -5.1 | 1.0 | -0.5 | -2.0 | 1.3 | 0.3 | -2.3 | 4.4 | -0.6 |
| Warmest Day (°F) | 56 | 60 | 77 | 78 | 88 | 96 | 97 | 95 | 90 | 89 | 62 | 47 | 97 |
| Coldest Day (°F) | -12 | 5 | 12 | 18 | 29 | 50 | 51 | 52 | 42 | 3 | 10 | 12 | -12 |
| Total Precipitation (in) | 0.33 | 0.83 | 0.59 | 3.54 | 1.40 | 5.02 | 6.32 | 2.78 | 4.39 | 6.35 | 2.85 | 0.72 | 35.12 |
| Precip Anomaly (in) | -0.44 | 0.03 | -1.54 | 0.60 | -3.04 | 1.07 | 2.46 | -0.43 | 1.22 | 4.14 | 1.03 | -0.20 | 4.90 |
| Wettest Day (in) | 0.10 | 0.33 | 0.23 | 0.72 | 0.36 | 1.43 | 3.27 | 0.91 | 2.84 | 2.21 | 2.49 | 0.35 | 3.27 |
| Snowfall (in) | 5.8 | 8.4 | 0.0 | 10.9 | ------ | ------ | ------ | ------ | ------ | 14.0 | 1.5 | 6.3 | 46.9 |
| Snowfall Anomaly (in) | -2.2 | 1.9 | -6.9 | 9.4 | ------ | ------ | ------ | ------ | ------ | 13.5 | -2.0 | 0.8 | 14.5 |
| Snowiest Day (in) | 1.7 | 2.5 | 0.0 | 4.9 | ------ | ------ | ------ | ------ | ------ | 12.0 | 0.5 | 2.5 | 12.0 |
| Thunder Days | 0 | 0 | 1 | 2 | 5 | 10 | 10 | 8 | 3 | 4 | 1 | 0 | 44 |