| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 38.9 | 45.1 | 52.5 | 61.5 | 70.6 | 81.6 | 88.7 | 86.9 | 78.3 | 66.1 | 49.7 | 41.4 | 63.4 |
| Highest Mean Max. Temperature (F) | 49.6 | 56.3 | 61.9 | 67.9 | 77.3 | 88.4 | 93.6 | 92.5 | 84.7 | 70.9 | 61.7 | 53.2 | 93.6 |
| Year Highest Occurred | 1981 | 1991 | 1972 | 1981 | 1994 | 1994 | 1978 | 1994 | 1998 | 1975 | 1999 | 1980 | 1978 |
| Lowest Mean Max. Temperature (F) | 27.0 | 33.5 | 45.6 | 51.5 | 57.8 | 74.7 | 82.2 | 79.5 | 72.7 | 58.7 | 35.1 | 25.0 | 25.0 |
| Year Lowest Occurred | 1979 | 1978 | 1980 | 1984 | 1995 | 1983 | 1992 | 1992 | 1996 | 1984 | 1972 | 1983 | 1983 |
| Mean Temperature (F) | 26.2 | 31.7 | 38.5 | 47.2 | 56.8 | 67.3 | 73.6 | 72.0 | 62.5 | 50.5 | 36.5 | 28.5 | 49.3 |
| Highest Mean Temperature (F) | 33.9 | 39.6 | 45.7 | 53.5 | 61.7 | 72.5 | 76.7 | 77.1 | 69.3 | 53.7 | 46.0 | 37.8 | 77.1 |
| Year Highest Occurred | 1981 | 1991 | 1986 | 1981 | 1994 | 1994 | 1980 | 1983 | 1998 | 1979 | 1999 | 1980 | 1983 |
| Lowest Mean Temperature (F) | 14.5 | 21.4 | 33.0 | 40.7 | 48.7 | 62.6 | 69.1 | 66.8 | 58.0 | 46.1 | 26.8 | 13.7 | 13.7 |
| Year Lowest Occurred | 1979 | 1989 | 1980 | 1984 | 1995 | 1982 | 1972 | 1992 | 1971 | 1984 | 1972 | 1983 | 1983 |
| Mean Min. Temperature (F) | 13.4 | 18.3 | 24.4 | 32.9 | 43.0 | 53.0 | 58.5 | 57.0 | 46.7 | 34.9 | 23.3 | 15.6 | 35.1 |
| Highest Mean Min. Temperature (F) | 20.9 | 26.4 | 30.6 | 39.1 | 47.6 | 58.1 | 61.9 | 62.1 | 53.8 | 38.5 | 30.4 | 22.4 | 62.1 |
| Year Highest Occurred | 1983 | 1992 | 1986 | 1981 | 1987 | 1988 | 1998 | 1983 | 1998 | 1998 | 1998 | 1980 | 1983 |
| Lowest Mean Min. Temperature (F) | 2.1 | 9.2 | 18.6 | 27.5 | 39.5 | 48.5 | 55.4 | 52.8 | 42.3 | 30.4 | 15.7 | 2.4 | 2.1 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1997 | 1995 | 1998 | 1972 | 1974 | 1974 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.34 | 0.35 | 1.03 | 1.56 | 3.09 | 2.92 | 3.33 | 2.04 | 1.20 | 0.86 | 0.57 | 0.36 | 17.65 |
| Highest Precipitation (in.) | 1.01 | 1.87 | 3.44 | 4.45 | 6.83 | 7.42 | 7.28 | 4.98 | 4.41 | 4.42 | 1.84 | 1.01 | 7.42 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1986 | 1995 | 1989 | 1997 | 1992 | 1996 | 1994 | 1987 | 1985 | 1989 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.07 | 0.24 | 0.62 | 0.52 | 0.23 | 0.32 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1998 | 1979 | 1978 | 1992 | 1974 | 1990 | 1978 | 1994 | 1978 | 1988 | 1996 | 1981 | 1998 |
| Heating Degree Days (F) | 1204. | 932. | 824. | 535. | 274. | 62. | 3. | 15. | 142. | 450. | 856. | 1132. | 6429. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 21. | 131. | 270. | 230. | 66. | 0. | 0. | 0. | 718. |