| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 28.4 | 32.0 | 36.9 | 43.0 | 53.6 | 65.5 | 70.7 | 68.5 | 61.2 | 49.9 | 35.9 | 29.5 | 47.9 |
| Highest Mean Max. Temperature (F) | 35.8 | 38.6 | 43.1 | 49.1 | 59.9 | 70.7 | 73.6 | 71.1 | 66.7 | 54.7 | 47.5 | 38.5 | 73.6 |
| Year Highest Occurred | 1986 | 1995 | 1999 | 1992 | 1974 | 1994 | 1972 | 1973 | 1998 | 2000 | 1999 | 1980 | 1972 |
| Lowest Mean Max. Temperature (F) | 18.4 | 25.9 | 31.4 | 37.3 | 46.8 | 59.9 | 66.3 | 65.2 | 55.7 | 40.8 | 28.7 | 22.5 | 18.4 |
| Year Lowest Occurred | 1979 | 1985 | 1977 | 1983 | 1995 | 1983 | 1986 | 1987 | 1985 | 1984 | 1979 | 1978 | 1979 |
| Mean Temperature (F) | 16.0 | 18.1 | 23.3 | 30.2 | 40.4 | 49.9 | 54.9 | 53.5 | 46.4 | 36.7 | 24.8 | 18.1 | 34.4 |
| Highest Mean Temperature (F) | 21.7 | 25.3 | 29.9 | 35.9 | 44.5 | 54.5 | 57.4 | 56.0 | 51.4 | 40.3 | 32.1 | 27.8 | 57.4 |
| Year Highest Occurred | 1999 | 1995 | 1999 | 1981 | 1996 | 1994 | 1998 | 1983 | 1998 | 2000 | 1999 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 8.3 | 11.8 | 17.2 | 24.4 | 35.7 | 46.0 | 52.4 | 50.7 | 42.9 | 30.1 | 17.8 | 11.8 | 8.3 |
| Year Lowest Occurred | 1979 | 1985 | 1977 | 1983 | 1983 | 1975 | 1995 | 1974 | 1985 | 1984 | 1979 | 1978 | 1979 |
| Mean Min. Temperature (F) | 3.5 | 4.1 | 9.7 | 17.3 | 27.2 | 34.2 | 39.0 | 38.4 | 31.6 | 23.4 | 13.6 | 6.6 | 20.7 |
| Highest Mean Min. Temperature (F) | 10.4 | 11.9 | 16.7 | 22.7 | 31.1 | 38.8 | 42.8 | 41.5 | 36.0 | 26.8 | 20.8 | 17.1 | 42.8 |
| Year Highest Occurred | 1999 | 1995 | 1999 | 1981 | 1996 | 1981 | 1998 | 1983 | 1998 | 1988 | 1998 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -1.9 | -6.4 | 3.0 | 9.4 | 23.6 | 29.8 | 35.6 | 32.4 | 26.7 | 17.0 | 4.4 | 0.2 | -6.4 |
| Year Lowest Occurred | 1974 | 1973 | 1977 | 1973 | 1983 | 1974 | 1974 | 1974 | 1974 | 1976 | 1972 | 1974 | 1973 |
| Mean Precipitation (in.) | 1.37 | 1.22 | 1.42 | 1.39 | 1.41 | 1.10 | 1.86 | 1.96 | 1.34 | 1.10 | 1.33 | 1.17 | 16.67 |
| Highest Precipitation (in.) | 3.41 | 3.52 | 3.02 | 2.66 | 4.29 | 2.55 | 3.61 | 4.32 | 2.59 | 2.98 | 2.37 | 3.98 | 4.32 |
| Year Highest Occurred | 1996 | 1996 | 1975 | 1997 | 1995 | 1979 | 1989 | 1984 | 1993 | 1993 | 1983 | 1996 | 1984 |
| Lowest Precipitation (in.) | 0.22 | 0.29 | 0.55 | 0.44 | 0.17 | 0.00 | 0.25 | 0.54 | 0.41 | 0.32 | 0.38 | 0.09 | 0.00 |
| Year Lowest Occurred | 1981 | 1985 | 1977 | 1987 | 1998 | 1980 | 1994 | 1985 | 1978 | 1976 | 1980 | 1998 | 1980 |
| Heating Degree Days (F) | 1521. | 1315. | 1292. | 1046. | 764. | 454. | 315. | 359. | 558. | 879. | 1207. | 1456. | 11166. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |