| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.9 | 37.0 | 44.6 | 53.5 | 63.3 | 71.4 | 80.4 | 80.4 | 69.4 | 56.2 | 37.8 | 30.0 | 54.6 |
| Highest Mean Max. Temperature (F) | 38.5 | 42.5 | 54.8 | 61.9 | 70.6 | 79.1 | 88.6 | 89.1 | 78.9 | 66.9 | 45.1 | 34.1 | 89.1 |
| Year Highest Occurred | 1994 | 1992 | 1992 | 1987 | 1993 | 1986 | 1985 | 1971 | 1990 | 1987 | 1999 | 1999 | 1971 |
| Lowest Mean Max. Temperature (F) | 20.6 | 30.0 | 37.9 | 44.5 | 55.1 | 63.2 | 67.5 | 72.9 | 58.5 | 48.8 | 28.3 | 20.6 | 20.6 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1975 | 1981 | 1993 | 1985 | 1985 | 1985 | 1985 | 1990 | 1979 |
| Mean Temperature (F) | 24.1 | 28.2 | 34.6 | 41.4 | 49.0 | 56.4 | 62.6 | 62.1 | 52.9 | 43.1 | 31.0 | 23.7 | 42.4 |
| Highest Mean Temperature (F) | 31.4 | 34.2 | 40.6 | 46.3 | 54.3 | 62.6 | 69.0 | 67.2 | 59.2 | 49.6 | 34.9 | 29.3 | 69.0 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1987 | 1993 | 1986 | 1998 | 1971 | 1998 | 1988 | 1981 | 1973 | 1998 |
| Lowest Mean Temperature (F) | 11.8 | 19.3 | 29.0 | 35.2 | 43.2 | 52.4 | 55.4 | 57.0 | 47.7 | 38.6 | 22.2 | 13.6 | 11.8 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1975 | 1981 | 1993 | 1980 | 1985 | 1985 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 17.3 | 19.3 | 24.5 | 29.2 | 34.7 | 41.4 | 44.8 | 43.7 | 36.4 | 30.0 | 24.2 | 17.3 | 30.2 |
| Highest Mean Min. Temperature (F) | 25.1 | 26.1 | 29.4 | 32.4 | 38.0 | 46.0 | 50.6 | 48.3 | 40.5 | 33.5 | 29.5 | 25.1 | 50.6 |
| Year Highest Occurred | 1990 | 1991 | 1984 | 1981 | 1993 | 1988 | 1975 | 1983 | 1998 | 1988 | 1983 | 1973 | 1975 |
| Lowest Mean Min. Temperature (F) | 3.0 | 8.5 | 20.1 | 23.9 | 31.4 | 36.7 | 40.9 | 39.4 | 29.9 | 24.5 | 16.1 | 6.5 | 3.0 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1982 | 1975 | 1999 | 1999 | 1992 | 1999 | 1991 | 1985 | 1990 | 1979 |
| Mean Precipitation (in.) | 5.16 | 3.86 | 3.20 | 2.65 | 2.96 | 2.82 | 1.58 | 1.57 | 2.15 | 2.77 | 4.82 | 5.35 | 38.89 |
| Highest Precipitation (in.) | 11.52 | 9.95 | 7.03 | 6.99 | 5.93 | 7.48 | 4.14 | 4.31 | 5.94 | 6.17 | 13.68 | 11.87 | 13.68 |
| Year Highest Occurred | 1971 | 1972 | 1972 | 1992 | 1984 | 1981 | 1992 | 1985 | 1985 | 1995 | 1995 | 1996 | 1995 |
| Lowest Precipitation (in.) | 0.90 | 1.01 | 1.17 | 0.39 | 1.38 | 0.73 | 0.09 | 0.00 | 0.13 | 0.02 | 0.79 | 0.84 | 0.00 |
| Year Lowest Occurred | 1981 | 1973 | 1996 | 1977 | 1979 | 1977 | 1985 | 1994 | 1979 | 1987 | 1979 | 1986 | 1994 |
| Heating Degree Days (F) | 1268. | 1033. | 944. | 710. | 496. | 268. | 138. | 142. | 370. | 679. | 1020. | 1282. | 8350. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 11. | 63. | 51. | 7. | 0. | 0. | 0. | 132. |