| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.4 | 35.5 | 42.2 | 49.4 | 59.3 | 70.4 | 75.4 | 73.1 | 66.7 | 56.8 | 41.7 | 32.5 | 52.9 |
| Highest Mean Max. Temperature (F) | 38.7 | 43.3 | 49.6 | 56.7 | 65.0 | 75.7 | 78.4 | 77.6 | 72.1 | 61.6 | 53.0 | 43.0 | 78.4 |
| Year Highest Occurred | 1986 | 1999 | 1999 | 1981 | 1996 | 1994 | 2000 | 2000 | 1998 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 20.9 | 24.4 | 33.4 | 41.6 | 53.0 | 64.7 | 72.3 | 70.6 | 63.1 | 45.9 | 27.7 | 15.5 | 15.5 |
| Year Lowest Occurred | 1984 | 1973 | 1973 | 1973 | 1995 | 1983 | 1973 | 1976 | 1985 | 1984 | 1972 | 1986 | 1986 |
| Mean Temperature (F) | 14.8 | 18.7 | 28.1 | 35.7 | 45.6 | 55.1 | 60.6 | 58.9 | 51.6 | 41.3 | 27.7 | 17.1 | 37.9 |
| Highest Mean Temperature (F) | 22.4 | 27.7 | 34.1 | 42.0 | 49.8 | 59.4 | 62.9 | 62.3 | 56.0 | 44.9 | 34.7 | 29.2 | 62.9 |
| Year Highest Occurred | 1999 | 1976 | 1999 | 1981 | 1996 | 1994 | 2000 | 2000 | 1998 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Temperature (F) | 3.5 | 5.9 | 20.1 | 27.3 | 41.2 | 51.4 | 57.7 | 55.9 | 48.4 | 35.5 | 15.0 | 2.6 | 2.6 |
| Year Lowest Occurred | 1984 | 1973 | 1973 | 1973 | 1983 | 1983 | 1973 | 1974 | 1974 | 1984 | 1972 | 1986 | 1986 |
| Mean Min. Temperature (F) | -1.8 | 1.8 | 13.9 | 22.0 | 31.9 | 39.8 | 45.7 | 44.7 | 36.5 | 25.7 | 13.7 | 1.6 | 23.0 |
| Highest Mean Min. Temperature (F) | 7.7 | 14.0 | 18.6 | 27.4 | 34.6 | 43.1 | 49.0 | 47.8 | 40.8 | 29.8 | 19.5 | 15.4 | 49.0 |
| Year Highest Occurred | 1971 | 1986 | 1999 | 1992 | 1994 | 1994 | 1999 | 1988 | 1997 | 1972 | 1981 | 1980 | 1999 |
| Lowest Mean Min. Temperature (F) | -14.0 | -12.7 | 6.0 | 12.9 | 28.6 | 35.3 | 43.0 | 40.6 | 31.8 | 21.8 | 2.3 | -10.3 | -14.0 |
| Year Lowest Occurred | 1984 | 1973 | 1984 | 1973 | 1975 | 1975 | 1973 | 1974 | 1974 | 1976 | 1972 | 1986 | 1984 |
| Mean Precipitation (in.) | 0.32 | 0.29 | 0.81 | 0.95 | 1.40 | 1.32 | 2.29 | 2.50 | 1.08 | 0.74 | 0.49 | 0.39 | 12.58 |
| Highest Precipitation (in.) | 0.92 | 1.19 | 2.33 | 2.86 | 3.12 | 2.79 | 4.65 | 7.26 | 3.38 | 3.02 | 1.64 | 1.08 | 7.26 |
| Year Highest Occurred | 1979 | 1987 | 1990 | 1980 | 1994 | 1988 | 1975 | 1984 | 1976 | 1984 | 1986 | 1988 | 1984 |
| Lowest Precipitation (in.) | 0.05 | 0.02 | 0.04 | 0.10 | 0.11 | 0.11 | 0.24 | 0.44 | 0.06 | 0.05 | 0.01 | 0.04 | 0.01 |
| Year Lowest Occurred | 1997 | 1994 | 1989 | 1981 | 1998 | 1990 | 1994 | 1973 | 1987 | 1983 | 1989 | 1994 | 1989 |
| Heating Degree Days (F) | 1558. | 1298. | 1146. | 879. | 601. | 299. | 143. | 193. | 402. | 736. | 1119. | 1487. | 9861. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 2. | 5. | 4. | 0. | 0. | 0. | 0. | 11. |