| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 49.9 | 55.0 | 62.9 | 71.4 | 79.0 | 87.2 | 90.9 | 88.8 | 82.2 | 73.1 | 60.0 | 51.4 | 71.0 |
| Highest Mean Max. Temperature (F) | 58.8 | 64.8 | 70.5 | 78.6 | 88.1 | 94.9 | 98.1 | 95.1 | 89.5 | 79.2 | 71.3 | 56.9 | 98.1 |
| Year Highest Occurred | 1986 | 1976 | 1972 | 1978 | 1996 | 1990 | 1980 | 2000 | 2000 | 1979 | 1999 | 1994 | 1980 |
| Lowest Mean Max. Temperature (F) | 36.5 | 38.8 | 55.5 | 62.9 | 72.6 | 80.9 | 84.3 | 82.3 | 72.2 | 65.4 | 49.5 | 37.5 | 36.5 |
| Year Lowest Occurred | 1979 | 1978 | 1999 | 1973 | 1999 | 1982 | 1976 | 1971 | 1974 | 1976 | 1972 | 1983 | 1979 |
| Mean Temperature (F) | 35.8 | 40.5 | 47.6 | 55.9 | 65.1 | 74.0 | 78.1 | 76.2 | 69.1 | 58.7 | 45.7 | 37.5 | 57.0 |
| Highest Mean Temperature (F) | 42.0 | 47.8 | 52.3 | 61.3 | 73.0 | 79.5 | 83.5 | 80.1 | 75.2 | 61.4 | 53.7 | 42.1 | 83.5 |
| Year Highest Occurred | 1986 | 1976 | 1972 | 1978 | 1996 | 1980 | 1980 | 1999 | 1998 | 1973 | 1999 | 1994 | 1980 |
| Lowest Mean Temperature (F) | 27.2 | 30.1 | 42.7 | 49.6 | 60.2 | 69.3 | 73.4 | 72.0 | 61.5 | 51.2 | 38.4 | 26.2 | 26.2 |
| Year Lowest Occurred | 1979 | 1978 | 1999 | 1973 | 1999 | 1982 | 1976 | 1971 | 1974 | 1976 | 1972 | 1983 | 1983 |
| Mean Min. Temperature (F) | 21.6 | 26.0 | 32.3 | 40.4 | 51.1 | 60.8 | 65.2 | 63.6 | 55.9 | 44.2 | 31.3 | 23.6 | 43.0 |
| Highest Mean Min. Temperature (F) | 25.5 | 31.5 | 37.1 | 45.2 | 57.8 | 66.1 | 69.0 | 66.9 | 60.8 | 49.1 | 36.4 | 29.0 | 69.0 |
| Year Highest Occurred | 1998 | 1987 | 1974 | 1981 | 1996 | 1980 | 1980 | 1980 | 1998 | 2000 | 1981 | 1984 | 1980 |
| Lowest Mean Min. Temperature (F) | 14.7 | 20.3 | 26.3 | 34.9 | 45.5 | 55.7 | 62.6 | 61.4 | 50.7 | 36.9 | 25.7 | 14.8 | 14.7 |
| Year Lowest Occurred | 1977 | 1994 | 1996 | 1983 | 1983 | 1983 | 1976 | 1992 | 1974 | 1976 | 1976 | 1983 | 1977 |
| Mean Precipitation (in.) | 0.57 | 0.78 | 1.17 | 1.59 | 3.22 | 3.96 | 2.30 | 2.76 | 2.67 | 1.68 | 0.90 | 0.74 | 22.34 |
| Highest Precipitation (in.) | 2.27 | 2.69 | 5.32 | 6.40 | 6.93 | 11.14 | 7.56 | 7.35 | 5.87 | 6.00 | 2.30 | 2.41 | 11.14 |
| Year Highest Occurred | 1999 | 1998 | 1973 | 1997 | 1978 | 1979 | 1996 | 1986 | 1974 | 1983 | 1986 | 1991 | 1979 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.03 | 0.00 | 0.54 | 0.72 | 0.10 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1998 | 2000 | 1997 | 1996 | 1984 | 1973 | 1974 | 2000 | 2000 | 1992 | 1999 | 1977 | 1998 |
| Heating Degree Days (F) | 907. | 686. | 540. | 290. | 100. | 11. | 0. | 1. | 42. | 212. | 580. | 853. | 4222. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 17. | 103. | 281. | 405. | 348. | 164. | 15. | 0. | 0. | 1333. |