| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 29.6 | 32.1 | 42.1 | 55.3 | 68.7 | 76.7 | 81.3 | 78.9 | 70.3 | 58.8 | 46.1 | 34.4 | 56.2 |
| Highest Mean Max. Temperature (F) | 39.4 | 39.6 | 49.4 | 60.7 | 74.1 | 82.8 | 85.6 | 83.1 | 74.8 | 65.5 | 52.4 | 43.0 | 85.6 |
| Year Highest Occurred | 1990 | 1981 | 1973 | 1991 | 1975 | 1995 | 1988 | 1995 | 1999 | 1971 | 1975 | 1982 | 1988 |
| Lowest Mean Max. Temperature (F) | 21.3 | 20.2 | 35.0 | 47.7 | 61.4 | 71.8 | 75.0 | 75.4 | 66.1 | 53.9 | 40.2 | 21.7 | 20.2 |
| Year Lowest Occurred | 1982 | 1979 | 1984 | 1975 | 1984 | 1982 | 1992 | 1982 | 1981 | 1981 | 1976 | 1989 | 1979 |
| Mean Temperature (F) | 20.8 | 23.0 | 32.9 | 45.0 | 57.1 | 65.4 | 70.2 | 68.4 | 60.0 | 49.2 | 38.6 | 27.0 | 46.5 |
| Highest Mean Temperature (F) | 31.7 | 31.2 | 40.3 | 50.1 | 62.4 | 70.1 | 75.8 | 71.9 | 64.2 | 55.9 | 44.1 | 34.0 | 75.8 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1998 | 1995 | 1995 | 1973 | 1971 | 1971 | 1975 | 1982 | 1995 |
| Lowest Mean Temperature (F) | 9.7 | 10.6 | 26.1 | 38.3 | 51.2 | 60.9 | 65.8 | 64.5 | 57.5 | 44.7 | 33.3 | 12.3 | 9.7 |
| Year Lowest Occurred | 1994 | 1979 | 1984 | 1975 | 1997 | 1985 | 1992 | 1982 | 1975 | 1992 | 1976 | 1989 | 1994 |
| Mean Min. Temperature (F) | 11.9 | 13.8 | 23.7 | 34.7 | 45.5 | 54.0 | 59.0 | 57.9 | 49.6 | 39.5 | 31.1 | 19.5 | 36.7 |
| Highest Mean Min. Temperature (F) | 23.9 | 23.2 | 31.1 | 40.3 | 51.0 | 57.4 | 67.5 | 62.1 | 54.6 | 46.2 | 35.8 | 27.7 | 67.5 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1987 | 1998 | 1995 | 1995 | 1980 | 1971 | 1971 | 1975 | 1996 | 1995 |
| Lowest Mean Min. Temperature (F) | -2.5 | 0.9 | 17.3 | 28.9 | 40.1 | 48.9 | 55.7 | 53.6 | 46.4 | 34.7 | 26.5 | 2.9 | -2.5 |
| Year Lowest Occurred | 1994 | 1979 | 1984 | 1975 | 1997 | 1988 | 2000 | 1982 | 1995 | 1974 | 1976 | 1989 | 1994 |
| Mean Precipitation (in.) | 3.95 | 3.02 | 3.70 | 3.63 | 3.80 | 4.02 | 4.06 | 3.53 | 4.84 | 3.52 | 4.18 | 4.02 | 46.27 |
| Highest Precipitation (in.) | 8.12 | 7.98 | 6.24 | 8.36 | 8.20 | 9.90 | 10.03 | 5.72 | 9.81 | 7.50 | 7.56 | 6.77 | 10.03 |
| Year Highest Occurred | 1978 | 1971 | 1977 | 1983 | 1990 | 1972 | 1992 | 1991 | 1981 | 1976 | 1977 | 1996 | 1992 |
| Lowest Precipitation (in.) | 1.09 | 0.65 | 1.31 | 1.47 | 0.81 | 0.91 | 1.34 | 1.57 | 2.11 | 1.03 | 1.61 | 1.83 | 0.65 |
| Year Lowest Occurred | 1981 | 1987 | 1995 | 1986 | 1977 | 1995 | 1979 | 1973 | 1982 | 1994 | 1978 | 1979 | 1987 |
| Heating Degree Days (F) | 1371. | 1178. | 995. | 601. | 269. | 67. | 14. | 23. | 164. | 493. | 792. | 1179. | 7146. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 23. | 78. | 174. | 127. | 13. | 1. | 0. | 0. | 416. |