| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 37.4 | 37.4 | 44.0 | 52.2 | 62.4 | 72.0 | 78.9 | 77.3 | 70.4 | 60.3 | 50.6 | 42.9 | 57.2 |
| Highest Mean Max. Temperature (F) | 42.6 | 43.4 | 50.0 | 56.7 | 69.0 | 78.1 | 83.9 | 81.0 | 74.3 | 65.6 | 55.6 | 48.8 | 83.9 |
| Year Highest Occurred | 1998 | 1981 | 2000 | 1976 | 1991 | 1999 | 1999 | 1988 | 1998 | 1971 | 1994 | 1998 | 1999 |
| Lowest Mean Max. Temperature (F) | 28.9 | 26.3 | 39.4 | 45.9 | 56.9 | 65.4 | 74.9 | 73.4 | 66.7 | 56.7 | 46.2 | 31.2 | 26.3 |
| Year Lowest Occurred | 1981 | 1979 | 1984 | 1972 | 1990 | 1982 | 1989 | 1982 | 1990 | 1988 | 1976 | 1989 | 1979 |
| Mean Temperature (F) | 30.2 | 30.1 | 36.5 | 44.8 | 55.0 | 64.0 | 70.8 | 69.5 | 62.8 | 52.6 | 44.4 | 35.6 | 49.7 |
| Highest Mean Temperature (F) | 37.0 | 38.3 | 41.8 | 47.9 | 60.0 | 68.2 | 74.4 | 73.2 | 67.8 | 56.4 | 49.2 | 41.5 | 74.4 |
| Year Highest Occurred | 1998 | 1984 | 2000 | 1991 | 1991 | 1999 | 1999 | 1988 | 1983 | 1995 | 1982 | 1982 | 1999 |
| Lowest Mean Temperature (F) | 21.8 | 19.9 | 32.3 | 38.6 | 51.2 | 60.1 | 67.7 | 66.9 | 58.8 | 48.4 | 38.5 | 22.8 | 19.9 |
| Year Lowest Occurred | 1977 | 1979 | 1978 | 1972 | 1990 | 1982 | 1978 | 1972 | 1978 | 1974 | 1976 | 1989 | 1979 |
| Mean Min. Temperature (F) | 22.9 | 22.7 | 28.9 | 37.3 | 47.6 | 56.0 | 62.7 | 61.7 | 55.2 | 44.9 | 38.1 | 28.3 | 42.2 |
| Highest Mean Min. Temperature (F) | 31.3 | 33.2 | 34.5 | 41.1 | 51.2 | 59.7 | 66.8 | 66.5 | 61.3 | 50.8 | 43.2 | 36.0 | 66.8 |
| Year Highest Occurred | 1998 | 1984 | 1983 | 1983 | 1979 | 1984 | 1985 | 1985 | 1983 | 1983 | 1982 | 1982 | 1985 |
| Lowest Mean Min. Temperature (F) | 13.0 | 13.5 | 24.4 | 31.4 | 44.8 | 53.4 | 58.9 | 55.7 | 49.0 | 38.8 | 30.8 | 14.3 | 13.0 |
| Year Lowest Occurred | 1977 | 1979 | 1987 | 1972 | 1974 | 1990 | 1978 | 1987 | 1978 | 1974 | 1976 | 1989 | 1977 |
| Mean Precipitation (in.) | 3.84 | 3.01 | 4.04 | 3.54 | 2.98 | 3.14 | 2.75 | 3.11 | 3.72 | 3.61 | 4.38 | 3.83 | 41.95 |
| Highest Precipitation (in.) | 12.89 | 5.71 | 9.94 | 9.43 | 5.81 | 7.64 | 5.33 | 7.34 | 9.63 | 7.82 | 8.73 | 7.55 | 12.89 |
| Year Highest Occurred | 1979 | 1981 | 1983 | 1987 | 1979 | 1998 | 1989 | 1985 | 1972 | 1996 | 1988 | 1992 | 1979 |
| Lowest Precipitation (in.) | 1.00 | 0.66 | 0.89 | 1.12 | 0.95 | 0.23 | 0.85 | 0.32 | 0.95 | 0.66 | 1.19 | 0.57 | 0.23 |
| Year Lowest Occurred | 1989 | 1987 | 1981 | 1999 | 1992 | 1999 | 1974 | 1984 | 1986 | 1994 | 1976 | 1989 | 1999 |
| Heating Degree Days (F) | 1080. | 980. | 885. | 608. | 313. | 83. | 10. | 13. | 106. | 386. | 619. | 911. | 5994. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 53. | 190. | 151. | 39. | 1. | 0. | 0. | 436. |