| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 32.6 | 33.5 | 34.8 | 38.1 | 41.6 | 45.1 | 49.3 | 51.7 | 50.9 | 45.6 | 39.6 | 34.7 | 41.5 |
| Highest Mean Max. Temperature (F) | 35.8 | 39.4 | 39.5 | 40.7 | 46.7 | 49.2 | 52.2 | 55.4 | 53.9 | 47.9 | 43.0 | 40.2 | 55.4 |
| Year Highest Occurred | 1976 | 1997 | 1996 | 1998 | 1997 | 1997 | 1997 | 1981 | 1986 | 1986 | 1990 | 2000 | 1981 |
| Lowest Mean Max. Temperature (F) | 25.3 | 26.7 | 29.8 | 35.6 | 37.8 | 41.0 | 46.4 | 48.8 | 48.4 | 43.3 | 35.8 | 28.0 | 25.3 |
| Year Lowest Occurred | 2000 | 1999 | 1999 | 1976 | 1973 | 1978 | 1971 | 1971 | 1992 | 1979 | 1977 | 1999 | 2000 |
| Mean Temperature (F) | 30.0 | 31.2 | 32.2 | 35.4 | 38.9 | 42.7 | 47.0 | 49.5 | 48.1 | 42.6 | 36.8 | 32.0 | 38.9 |
| Highest Mean Temperature (F) | 34.5 | 38.2 | 37.0 | 37.5 | 42.5 | 45.7 | 49.7 | 52.8 | 51.0 | 45.1 | 41.0 | 38.0 | 52.8 |
| Year Highest Occurred | 1978 | 1997 | 1996 | 1990 | 1997 | 1997 | 1997 | 1981 | 1986 | 1985 | 2000 | 2000 | 1981 |
| Lowest Mean Temperature (F) | 22.5 | 23.6 | 27.3 | 33.0 | 35.9 | 39.4 | 44.4 | 46.6 | 44.5 | 39.6 | 32.6 | 24.0 | 22.5 |
| Year Lowest Occurred | 2000 | 1999 | 1999 | 1988 | 1973 | 1980 | 1971 | 1971 | 1992 | 1980 | 1977 | 1999 | 2000 |
| Mean Min. Temperature (F) | 27.4 | 28.9 | 29.5 | 32.7 | 36.1 | 40.3 | 44.7 | 47.3 | 45.2 | 39.6 | 34.0 | 29.3 | 36.3 |
| Highest Mean Min. Temperature (F) | 33.7 | 36.9 | 34.4 | 34.9 | 38.3 | 42.8 | 47.2 | 50.2 | 48.6 | 42.9 | 39.1 | 35.7 | 50.2 |
| Year Highest Occurred | 1978 | 1997 | 1996 | 1978 | 1997 | 1991 | 1997 | 1981 | 1995 | 1991 | 2000 | 2000 | 1981 |
| Lowest Mean Min. Temperature (F) | 19.7 | 20.5 | 24.2 | 29.8 | 33.1 | 37.2 | 42.3 | 44.4 | 40.5 | 35.5 | 29.1 | 19.9 | 19.7 |
| Year Lowest Occurred | 2000 | 1999 | 1977 | 1988 | 1971 | 1980 | 1971 | 1971 | 1992 | 1980 | 1972 | 1999 | 2000 |
| Mean Precipitation (in.) | 2.56 | 2.22 | 2.13 | 1.76 | 1.62 | 1.99 | 2.57 | 3.86 | 3.09 | 3.56 | 3.98 | 3.10 | 32.44 |
| Highest Precipitation (in.) | 5.63 | 4.48 | 3.84 | 3.88 | 6.56 | 4.67 | 5.21 | 9.36 | 6.26 | 8.10 | 7.99 | 5.51 | 9.36 |
| Year Highest Occurred | 1987 | 1977 | 1998 | 1979 | 1995 | 1993 | 1984 | 1990 | 1995 | 1975 | 1975 | 1987 | 1990 |
| Lowest Precipitation (in.) | 0.84 | 0.77 | 0.58 | 0.48 | 0.52 | 0.14 | 0.82 | 0.71 | 1.67 | 1.66 | 1.35 | 1.01 | 0.14 |
| Year Lowest Occurred | 1996 | 1972 | 1989 | 1993 | 2000 | 1981 | 1982 | 1993 | 2000 | 1996 | 1993 | 1988 | 1981 |
| Heating Degree Days (F) | 1084. | 947. | 1002. | 888. | 811. | 669. | 559. | 481. | 509. | 695. | 847. | 1024. | 9516. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |