| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 40.6 | 46.9 | 56.0 | 64.1 | 72.0 | 80.3 | 89.9 | 89.1 | 79.3 | 65.8 | 50.1 | 40.8 | 64.6 |
| Highest Mean Max. Temperature (F) | 50.7 | 54.9 | 61.8 | 72.2 | 80.2 | 88.3 | 99.2 | 96.1 | 86.9 | 73.3 | 56.1 | 49.0 | 99.2 |
| Year Highest Occurred | 1983 | 1991 | 1992 | 1977 | 1992 | 1992 | 1985 | 1981 | 1990 | 1988 | 1999 | 1974 | 1985 |
| Lowest Mean Max. Temperature (F) | 26.4 | 31.8 | 50.0 | 58.8 | 66.1 | 72.5 | 80.7 | 82.9 | 71.7 | 62.2 | 36.9 | 25.1 | 25.1 |
| Year Lowest Occurred | 1979 | 1989 | 1989 | 1978 | 1996 | 1971 | 1993 | 1980 | 1985 | 1971 | 1985 | 1985 | 1985 |
| Mean Temperature (F) | 34.7 | 39.7 | 46.5 | 52.7 | 59.8 | 67.3 | 75.3 | 75.2 | 66.1 | 54.7 | 43.1 | 35.1 | 54.2 |
| Highest Mean Temperature (F) | 43.0 | 46.7 | 51.4 | 58.0 | 65.3 | 74.1 | 82.2 | 80.2 | 72.7 | 60.9 | 49.1 | 41.7 | 82.2 |
| Year Highest Occurred | 1983 | 1991 | 1992 | 1987 | 1992 | 1992 | 1985 | 1986 | 1990 | 1988 | 1999 | 1974 | 1985 |
| Lowest Mean Temperature (F) | 20.1 | 25.1 | 42.3 | 47.8 | 54.8 | 60.8 | 68.9 | 70.0 | 59.1 | 50.6 | 30.0 | 20.6 | 20.1 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1978 | 1971 | 1993 | 1980 | 1971 | 1971 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 28.8 | 32.5 | 36.9 | 41.3 | 47.6 | 54.3 | 60.7 | 61.2 | 52.9 | 43.6 | 36.0 | 29.3 | 43.8 |
| Highest Mean Min. Temperature (F) | 36.5 | 38.6 | 42.1 | 46.5 | 52.4 | 59.9 | 65.4 | 65.8 | 58.6 | 48.6 | 42.1 | 35.0 | 65.8 |
| Year Highest Occurred | 1990 | 1991 | 1986 | 1990 | 1994 | 1992 | 1998 | 1986 | 1990 | 1988 | 1999 | 1973 | 1986 |
| Lowest Mean Min. Temperature (F) | 13.7 | 18.5 | 31.7 | 35.6 | 42.5 | 48.0 | 57.2 | 57.1 | 45.8 | 38.9 | 23.1 | 16.1 | 13.7 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1972 | 1978 | 1976 | 1993 | 1980 | 1971 | 1971 | 1985 | 1985 | 1979 |
| Mean Precipitation (in.) | 2.25 | 1.97 | 2.20 | 1.83 | 1.95 | 1.15 | 0.73 | 0.84 | 0.83 | 1.77 | 2.85 | 2.51 | 20.88 |
| Highest Precipitation (in.) | 4.85 | 4.12 | 4.33 | 4.01 | 6.63 | 3.09 | 4.73 | 3.11 | 2.24 | 3.77 | 5.15 | 5.86 | 6.63 |
| Year Highest Occurred | 1975 | 1986 | 1983 | 1978 | 1991 | 1984 | 1992 | 1977 | 1971 | 1994 | 1998 | 1996 | 1991 |
| Lowest Precipitation (in.) | 0.44 | 0.78 | 0.49 | 0.17 | 0.26 | 0.25 | 0.00 | 0.00 | 0.00 | 0.01 | 0.50 | 0.68 | 0.00 |
| Year Lowest Occurred | 1985 | 1977 | 1992 | 1977 | 1992 | 1989 | 1984 | 1994 | 1991 | 1987 | 1976 | 1986 | 1984 |
| Heating Degree Days (F) | 939. | 709. | 574. | 373. | 191. | 69. | 9. | 9. | 99. | 323. | 659. | 928. | 4882. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 4. | 29. | 138. | 329. | 323. | 131. | 3. | 0. | 0. | 957. |