| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 38.3 | 42.8 | 48.9 | 56.5 | 66.5 | 75.0 | 84.3 | 83.3 | 75.2 | 63.1 | 45.4 | 37.9 | 59.8 |
| Highest Mean Max. Temperature (F) | 47.3 | 53.9 | 58.6 | 66.8 | 77.3 | 81.3 | 89.6 | 88.8 | 82.7 | 73.5 | 56.8 | 44.5 | 89.6 |
| Year Highest Occurred | 1994 | 1995 | 1992 | 1987 | 1992 | 1974 | 1998 | 1992 | 1974 | 1988 | 1976 | 1989 | 1998 |
| Lowest Mean Max. Temperature (F) | 28.1 | 31.8 | 41.2 | 44.4 | 57.1 | 66.7 | 74.2 | 75.2 | 64.6 | 55.6 | 36.4 | 31.0 | 28.1 |
| Year Lowest Occurred | 1993 | 1993 | 1971 | 1975 | 1977 | 1980 | 1993 | 1976 | 1986 | 1984 | 1994 | 1992 | 1993 |
| Mean Temperature (F) | 26.7 | 30.6 | 34.9 | 39.6 | 47.1 | 53.9 | 60.0 | 59.2 | 51.5 | 42.3 | 31.7 | 25.4 | 41.9 |
| Highest Mean Temperature (F) | 34.0 | 36.9 | 41.1 | 46.1 | 52.5 | 58.7 | 64.4 | 62.1 | 55.1 | 47.8 | 37.8 | 31.0 | 64.4 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1987 | 1992 | 1986 | 1998 | 1971 | 1990 | 1988 | 1991 | 1975 | 1998 |
| Lowest Mean Temperature (F) | 17.7 | 18.6 | 28.6 | 32.0 | 41.6 | 49.7 | 51.8 | 54.3 | 46.4 | 38.7 | 22.1 | 15.3 | 15.3 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1976 | 1993 | 1980 | 1985 | 1971 | 1994 | 1990 | 1990 |
| Mean Min. Temperature (F) | 15.0 | 18.3 | 20.9 | 22.6 | 27.7 | 32.8 | 35.7 | 35.0 | 27.8 | 21.5 | 17.9 | 12.9 | 24.0 |
| Highest Mean Min. Temperature (F) | 24.1 | 24.5 | 26.1 | 27.3 | 31.4 | 37.8 | 39.2 | 39.5 | 31.3 | 29.8 | 26.9 | 22.1 | 39.5 |
| Year Highest Occurred | 1986 | 1986 | 1986 | 1988 | 1987 | 1986 | 1998 | 1977 | 1979 | 1979 | 1991 | 1973 | 1977 |
| Lowest Mean Min. Temperature (F) | 3.2 | 3.9 | 15.4 | 17.6 | 23.0 | 28.8 | 29.4 | 28.7 | 22.6 | 16.1 | 2.5 | -1.1 | -1.1 |
| Year Lowest Occurred | 1977 | 1989 | 1994 | 1982 | 1978 | 1976 | 1993 | 1980 | 1972 | 1974 | 1993 | 1990 | 1990 |
| Mean Precipitation (in.) | 1.67 | 1.10 | 1.59 | 0.80 | 0.99 | 0.84 | 0.53 | 0.63 | 0.40 | 0.81 | 1.58 | 1.56 | 12.50 |
| Highest Precipitation (in.) | 3.41 | 2.38 | 4.26 | 2.31 | 3.57 | 2.86 | 2.99 | 2.75 | 1.38 | 1.78 | 4.38 | 5.39 | 5.39 |
| Year Highest Occurred | 1995 | 1999 | 1983 | 1988 | 1993 | 1982 | 1987 | 1976 | 1994 | 1979 | 1973 | 1981 | 1981 |
| Lowest Precipitation (in.) | 0.01 | 0.03 | 0.42 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.06 | 0.00 |
| Year Lowest Occurred | 1985 | 1991 | 1973 | 1977 | 1975 | 1979 | 1989 | 1994 | 1999 | 1988 | 1976 | 1988 | 1977 |
| Heating Degree Days (F) | 1189. | 965. | 935. | 764. | 555. | 336. | 186. | 192. | 407. | 704. | 1000. | 1229. | 8462. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 3. | 29. | 12. | 2. | 0. | 0. | 0. | 46. |