| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 38.3 | 42.8 | 48.5 | 57.1 | 67.1 | 78.4 | 85.6 | 83.8 | 74.8 | 62.3 | 47.2 | 40.0 | 60.5 |
| Highest Mean Max. Temperature (F) | 46.4 | 51.3 | 56.6 | 64.2 | 74.2 | 84.8 | 89.7 | 89.8 | 81.9 | 66.8 | 60.2 | 49.6 | 89.8 |
| Year Highest Occurred | 1986 | 1992 | 1986 | 1992 | 1994 | 1988 | 2000 | 2000 | 1998 | 1975 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 26.7 | 29.8 | 42.7 | 48.7 | 55.9 | 72.2 | 79.8 | 79.1 | 69.2 | 55.7 | 36.1 | 25.2 | 25.2 |
| Year Lowest Occurred | 1979 | 1989 | 1980 | 1984 | 1995 | 1983 | 1992 | 1992 | 1973 | 1984 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 24.7 | 28.7 | 34.8 | 42.6 | 52.8 | 63.1 | 69.2 | 67.6 | 58.2 | 46.1 | 33.3 | 26.0 | 45.6 |
| Highest Mean Temperature (F) | 33.3 | 36.1 | 41.6 | 48.7 | 57.8 | 69.0 | 72.3 | 72.0 | 64.1 | 48.9 | 41.2 | 34.7 | 72.3 |
| Year Highest Occurred | 1986 | 1992 | 1986 | 1981 | 1994 | 1988 | 2000 | 2000 | 1998 | 1974 | 1999 | 1980 | 2000 |
| Lowest Mean Temperature (F) | 12.8 | 18.3 | 30.1 | 36.5 | 46.6 | 58.2 | 65.7 | 64.0 | 54.2 | 42.3 | 24.1 | 12.9 | 12.8 |
| Year Lowest Occurred | 1979 | 1989 | 1980 | 1983 | 1995 | 1998 | 1992 | 1992 | 1971 | 1984 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 11.0 | 14.6 | 21.0 | 28.1 | 38.5 | 47.7 | 52.8 | 51.4 | 41.5 | 29.9 | 19.4 | 12.0 | 30.7 |
| Highest Mean Min. Temperature (F) | 20.1 | 20.9 | 26.5 | 33.5 | 42.9 | 53.1 | 56.1 | 55.4 | 46.3 | 33.4 | 25.8 | 19.7 | 56.1 |
| Year Highest Occurred | 1986 | 1992 | 1986 | 1981 | 1987 | 1988 | 1998 | 1983 | 1998 | 1998 | 1998 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -1.2 | 6.8 | 16.0 | 23.8 | 34.4 | 43.3 | 49.6 | 47.7 | 37.3 | 24.9 | 12.1 | 0.5 | -1.2 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1982 | 1983 | 1998 | 1972 | 1974 | 1974 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.18 | 0.22 | 0.54 | 0.97 | 2.22 | 2.00 | 2.35 | 1.59 | 1.33 | 0.70 | 0.36 | 0.23 | 12.69 |
| Highest Precipitation (in.) | 0.47 | 0.60 | 2.33 | 2.31 | 4.30 | 4.86 | 4.56 | 4.34 | 3.07 | 2.68 | 0.90 | 0.59 | 4.86 |
| Year Highest Occurred | 1980 | 1998 | 1990 | 1999 | 1995 | 1991 | 1981 | 1989 | 1973 | 1998 | 1983 | 1987 | 1991 |
| Lowest Precipitation (in.) | 0.02 | 0.00 | 0.09 | 0.10 | 0.55 | 0.34 | 0.73 | 0.14 | 0.21 | 0.06 | 0.11 | 0.00 | 0.00 |
| Year Lowest Occurred | 1998 | 1999 | 1995 | 1992 | 1994 | 2000 | 1991 | 1995 | 1994 | 1988 | 1997 | 1996 | 1999 |
| Heating Degree Days (F) | 1251. | 1017. | 937. | 672. | 382. | 117. | 13. | 37. | 227. | 586. | 951. | 1208. | 7398. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 4. | 59. | 144. | 117. | 21. | 0. | 0. | 0. | 345. |