| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 40.4 | 44.3 | 48.4 | 53.6 | 60.2 | 65.3 | 71.6 | 72.6 | 66.8 | 57.3 | 45.5 | 40.2 | 55.5 |
| Highest Mean Max. Temperature (F) | 47.9 | 51.6 | 57.3 | 58.9 | 68.9 | 72.4 | 81.8 | 79.1 | 74.9 | 66.4 | 52.3 | 44.6 | 81.8 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1992 | 1992 | 1992 | 1985 | 1986 | 1974 | 1987 | 1976 | 1976 | 1985 |
| Lowest Mean Max. Temperature (F) | 34.0 | 36.5 | 42.1 | 48.2 | 54.7 | 58.8 | 63.2 | 64.2 | 60.2 | 51.8 | 35.9 | 32.9 | 32.9 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1996 | 1971 | 1993 | 1976 | 1996 | 1997 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 35.5 | 38.1 | 40.8 | 44.8 | 50.7 | 55.5 | 60.6 | 61.5 | 56.6 | 48.8 | 40.1 | 35.5 | 47.4 |
| Highest Mean Temperature (F) | 43.3 | 44.2 | 46.7 | 49.1 | 56.8 | 60.1 | 67.1 | 65.1 | 61.5 | 54.0 | 45.3 | 39.5 | 67.1 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1992 | 1993 | 1992 | 1985 | 1981 | 1974 | 1987 | 1976 | 1980 | 1985 |
| Lowest Mean Temperature (F) | 28.6 | 30.7 | 35.1 | 39.5 | 46.1 | 50.8 | 56.0 | 57.2 | 52.3 | 45.7 | 30.4 | 28.7 | 28.6 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1974 | 1971 | 1993 | 1976 | 1972 | 1990 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 30.5 | 31.8 | 33.1 | 36.0 | 41.2 | 45.7 | 49.6 | 50.4 | 46.3 | 40.2 | 34.6 | 30.8 | 39.2 |
| Highest Mean Min. Temperature (F) | 38.6 | 37.2 | 36.7 | 39.4 | 46.9 | 48.5 | 54.3 | 53.3 | 49.2 | 44.1 | 39.1 | 34.6 | 54.3 |
| Year Highest Occurred | 1981 | 1992 | 1981 | 1990 | 1993 | 1982 | 1998 | 1990 | 1979 | 1988 | 1987 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | 23.2 | 24.9 | 28.1 | 30.8 | 36.5 | 42.2 | 47.0 | 45.9 | 42.5 | 36.7 | 24.9 | 24.5 | 23.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1999 | 1976 | 1986 | 1973 | 1972 | 1972 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 12.92 | 10.26 | 9.87 | 8.39 | 6.58 | 5.40 | 2.97 | 2.55 | 4.80 | 8.19 | 14.81 | 12.72 | 99.46 |
| Highest Precipitation (in.) | 24.53 | 18.86 | 17.40 | 14.30 | 12.87 | 11.82 | 11.17 | 7.75 | 11.23 | 18.09 | 29.60 | 22.64 | 29.60 |
| Year Highest Occurred | 1971 | 1982 | 1997 | 1996 | 1984 | 1981 | 1983 | 1975 | 1978 | 1975 | 1990 | 1975 | 1990 |
| Lowest Precipitation (in.) | 1.33 | 0.45 | 2.19 | 2.95 | 2.77 | 1.49 | 0.03 | 0.42 | 0.28 | 0.38 | 3.75 | 0.75 | 0.03 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1999 | 1992 | 1996 | 1984 | 1986 | 1975 | 1987 | 1979 | 1985 | 1984 |
| Heating Degree Days (F) | 916. | 755. | 752. | 606. | 443. | 290. | 163. | 136. | 262. | 504. | 748. | 915. | 6490. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 4. | 26. | 27. | 9. | 0. | 0. | 0. | 66. |