| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.1 | 37.5 | 47.4 | 57.2 | 66.1 | 75.6 | 84.2 | 84.1 | 74.2 | 61.4 | 43.6 | 32.4 | 57.9 |
| Highest Mean Max. Temperature (F) | 38.9 | 48.6 | 57.5 | 66.9 | 74.8 | 85.2 | 89.7 | 89.1 | 81.3 | 71.9 | 56.4 | 39.5 | 89.7 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1992 | 1988 | 1989 | 1981 | 1990 | 1988 | 1999 | 1980 | 1989 |
| Lowest Mean Max. Temperature (F) | 19.1 | 25.9 | 35.3 | 45.5 | 60.2 | 67.9 | 75.4 | 79.1 | 65.8 | 53.5 | 33.9 | 22.2 | 19.1 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1978 | 1995 | 1993 | 1993 | 1986 | 1984 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 22.2 | 27.6 | 36.1 | 43.9 | 52.0 | 60.0 | 66.5 | 65.6 | 56.6 | 45.7 | 32.8 | 23.0 | 44.3 |
| Highest Mean Temperature (F) | 31.3 | 36.2 | 43.1 | 49.3 | 58.1 | 67.2 | 70.9 | 69.2 | 62.6 | 53.8 | 39.5 | 30.2 | 70.9 |
| Year Highest Occurred | 1998 | 1992 | 1992 | 1987 | 1992 | 1988 | 1988 | 2000 | 1990 | 1988 | 1999 | 1980 | 1988 |
| Lowest Mean Temperature (F) | 9.8 | 14.3 | 23.5 | 35.9 | 47.9 | 54.8 | 60.2 | 61.3 | 51.7 | 41.0 | 23.7 | 11.5 | 9.8 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1978 | 1998 | 1993 | 1975 | 1971 | 1984 | 2000 | 1985 | 1979 |
| Mean Min. Temperature (F) | 13.2 | 17.6 | 24.8 | 30.5 | 37.8 | 44.4 | 48.7 | 47.1 | 39.0 | 29.9 | 22.0 | 13.5 | 30.7 |
| Highest Mean Min. Temperature (F) | 24.0 | 25.3 | 30.4 | 34.0 | 42.4 | 49.2 | 52.5 | 51.5 | 45.2 | 35.6 | 27.7 | 22.1 | 52.5 |
| Year Highest Occurred | 1998 | 1986 | 1986 | 1992 | 1993 | 1988 | 1975 | 1983 | 1998 | 1988 | 1973 | 1977 | 1975 |
| Lowest Mean Min. Temperature (F) | 0.6 | 2.8 | 11.6 | 26.3 | 33.8 | 41.1 | 45.0 | 42.8 | 34.6 | 23.9 | 10.1 | 0.7 | 0.6 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1982 | 1982 | 1998 | 1993 | 1978 | 1971 | 1976 | 1993 | 1985 | 1979 |
| Mean Precipitation (in.) | 0.94 | 0.91 | 1.17 | 1.08 | 1.63 | 1.00 | 0.68 | 0.77 | 0.84 | 1.06 | 0.99 | 0.95 | 12.02 |
| Highest Precipitation (in.) | 2.46 | 1.97 | 2.80 | 2.78 | 4.75 | 3.41 | 2.68 | 2.46 | 2.66 | 2.98 | 2.53 | 2.90 | 4.75 |
| Year Highest Occurred | 1980 | 1986 | 1983 | 1976 | 1981 | 1995 | 1984 | 1982 | 1998 | 1971 | 1988 | 1996 | 1981 |
| Lowest Precipitation (in.) | 0.17 | 0.04 | 0.03 | 0.13 | 0.22 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 0.00 |
| Year Lowest Occurred | 1992 | 1977 | 1994 | 1987 | 1992 | 1996 | 1990 | 1992 | 1987 | 1988 | 1976 | 1989 | 1990 |
| Heating Degree Days (F) | 1329. | 1048. | 895. | 636. | 406. | 181. | 55. | 72. | 267. | 599. | 965. | 1303. | 7756. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 31. | 100. | 90. | 16. | 0. | 0. | 0. | 239. |