| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 25.1 | 28.3 | 37.3 | 47.5 | 58.7 | 68.4 | 74.4 | 73.6 | 66.4 | 54.5 | 41.4 | 30.0 | 50.5 |
| Highest Mean Max. Temperature (F) | 35.6 | 36.9 | 46.7 | 51.5 | 64.1 | 76.8 | 78.1 | 78.4 | 71.7 | 60.2 | 50.6 | 37.2 | 78.4 |
| Year Highest Occurred | 1989 | 1998 | 2000 | 1986 | 1988 | 1988 | 1975 | 1983 | 1998 | 1971 | 1999 | 1998 | 1983 |
| Lowest Mean Max. Temperature (F) | 14.2 | 18.9 | 31.4 | 42.9 | 52.7 | 64.4 | 68.8 | 69.6 | 61.4 | 51.3 | 35.4 | 18.9 | 14.2 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1979 | 1983 | 1974 | 1978 | 1977 | 1993 | 1988 | 1995 | 1983 | 1977 |
| Mean Temperature (F) | 17.6 | 21.2 | 30.7 | 41.2 | 51.8 | 61.0 | 67.2 | 66.9 | 59.6 | 47.8 | 35.2 | 23.5 | 43.6 |
| Highest Mean Temperature (F) | 27.9 | 32.3 | 38.7 | 44.2 | 56.1 | 66.2 | 70.9 | 72.7 | 63.4 | 54.1 | 41.7 | 30.4 | 72.7 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1986 | 1977 | 1987 | 1983 | 1995 | 1978 | 1971 | 1999 | 1994 | 1995 |
| Lowest Mean Temperature (F) | 5.8 | 11.5 | 24.7 | 37.4 | 47.5 | 57.9 | 63.0 | 62.6 | 54.6 | 44.2 | 28.1 | 12.5 | 5.8 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1975 | 1997 | 1982 | 1978 | 1992 | 1993 | 1988 | 1995 | 1983 | 1977 |
| Mean Min. Temperature (F) | 10.1 | 14.0 | 24.0 | 34.9 | 44.8 | 53.5 | 60.0 | 60.2 | 52.7 | 41.1 | 29.0 | 16.9 | 36.8 |
| Highest Mean Min. Temperature (F) | 20.4 | 27.7 | 31.1 | 37.8 | 48.5 | 58.7 | 64.2 | 67.8 | 57.9 | 48.0 | 33.3 | 24.9 | 67.8 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1999 | 1980 | 1995 | 1983 | 1995 | 1978 | 1971 | 1975 | 1982 | 1995 |
| Lowest Mean Min. Temperature (F) | -2.5 | 4.0 | 17.2 | 31.3 | 40.6 | 50.4 | 56.4 | 54.8 | 47.8 | 37.0 | 20.7 | 4.5 | -2.5 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1996 | 1997 | 1985 | 1996 | 1992 | 1993 | 1988 | 1995 | 1976 | 1977 |
| Mean Precipitation (in.) | 1.67 | 1.33 | 2.34 | 2.84 | 2.84 | 3.12 | 2.88 | 3.62 | 3.29 | 2.33 | 2.28 | 1.78 | 30.32 |
| Highest Precipitation (in.) | 3.21 | 2.95 | 5.97 | 5.12 | 6.68 | 8.61 | 6.02 | 10.74 | 11.29 | 5.60 | 7.01 | 4.52 | 11.29 |
| Year Highest Occurred | 1979 | 1971 | 1976 | 1994 | 1973 | 1996 | 1991 | 1975 | 1986 | 1991 | 1985 | 1971 | 1986 |
| Lowest Precipitation (in.) | 0.10 | 0.14 | 0.36 | 0.83 | 0.35 | 0.38 | 1.11 | 0.93 | 0.15 | 0.24 | 0.33 | 0.38 | 0.10 |
| Year Lowest Occurred | 1981 | 1982 | 1978 | 1989 | 1988 | 1995 | 1973 | 1976 | 1979 | 1975 | 1976 | 1998 | 1981 |
| Heating Degree Days (F) | 1469. | 1229. | 1066. | 715. | 413. | 151. | 36. | 53. | 184. | 532. | 895. | 1288. | 8031. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 29. | 103. | 112. | 21. | 0. | 0. | 0. | 266. |