| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 36.2 | 37.2 | 38.6 | 40.8 | 45.1 | 49.4 | 53.7 | 55.3 | 52.2 | 47.1 | 41.8 | 38.0 | 44.6 |
| Highest Mean Max. Temperature (F) | 40.0 | 44.0 | 42.4 | 43.4 | 50.6 | 54.0 | 57.4 | 58.2 | 56.1 | 50.2 | 44.7 | 43.3 | 58.2 |
| Year Highest Occurred | 1985 | 1997 | 1998 | 1981 | 1997 | 1979 | 1984 | 1997 | 1984 | 1989 | 2000 | 2000 | 1997 |
| Lowest Mean Max. Temperature (F) | 29.7 | 31.7 | 33.9 | 38.2 | 41.0 | 46.0 | 50.4 | 52.9 | 48.9 | 44.0 | 38.0 | 30.8 | 29.7 |
| Year Lowest Occurred | 2000 | 1999 | 1999 | 1976 | 1975 | 1976 | 1975 | 1986 | 1976 | 1976 | 1976 | 1999 | 2000 |
| Mean Temperature (F) | 31.8 | 32.9 | 34.5 | 36.8 | 40.7 | 45.1 | 49.2 | 50.9 | 47.8 | 42.5 | 37.6 | 33.8 | 40.3 |
| Highest Mean Temperature (F) | 35.5 | 40.0 | 38.7 | 38.9 | 44.4 | 48.8 | 51.8 | 53.4 | 51.8 | 45.3 | 41.4 | 40.3 | 53.4 |
| Year Highest Occurred | 1985 | 1997 | 1998 | 1978 | 1997 | 1979 | 1984 | 1997 | 1984 | 1989 | 2000 | 2000 | 1997 |
| Lowest Mean Temperature (F) | 24.6 | 25.8 | 30.3 | 34.2 | 38.0 | 42.3 | 44.6 | 48.8 | 45.3 | 39.8 | 34.8 | 24.0 | 24.0 |
| Year Lowest Occurred | 2000 | 1999 | 1999 | 1976 | 1975 | 1971 | 1971 | 1992 | 1990 | 1996 | 1987 | 1999 | 1999 |
| Mean Min. Temperature (F) | 27.4 | 28.5 | 30.4 | 32.8 | 36.2 | 40.7 | 44.6 | 46.4 | 43.4 | 37.8 | 33.3 | 29.6 | 35.9 |
| Highest Mean Min. Temperature (F) | 32.5 | 36.0 | 35.0 | 35.3 | 38.6 | 43.6 | 46.8 | 48.6 | 47.5 | 40.4 | 38.1 | 37.3 | 48.6 |
| Year Highest Occurred | 1974 | 1997 | 1998 | 1998 | 1981 | 1984 | 1997 | 1997 | 1984 | 1986 | 2000 | 2000 | 1997 |
| Lowest Mean Min. Temperature (F) | 19.4 | 19.8 | 26.0 | 30.1 | 32.0 | 38.4 | 38.4 | 43.3 | 39.6 | 34.1 | 30.1 | 17.1 | 17.1 |
| Year Lowest Occurred | 2000 | 1999 | 1988 | 1976 | 1971 | 1971 | 1971 | 1992 | 1990 | 1996 | 1992 | 1999 | 1999 |
| Mean Precipitation (in.) | 4.91 | 3.68 | 4.74 | 3.39 | 2.85 | 2.77 | 2.71 | 4.86 | 5.09 | 5.84 | 6.92 | 6.36 | 54.12 |
| Highest Precipitation (in.) | 11.39 | 6.31 | 7.92 | 6.64 | 5.37 | 5.37 | 4.92 | 7.62 | 7.83 | 10.01 | 11.50 | 11.22 | 11.50 |
| Year Highest Occurred | 1991 | 1994 | 1981 | 1979 | 1974 | 1992 | 1982 | 1993 | 1973 | 1979 | 1978 | 1986 | 1978 |
| Lowest Precipitation (in.) | 1.41 | 1.56 | 1.24 | 1.43 | 1.11 | 0.67 | 0.71 | 2.25 | 2.95 | 2.58 | 2.69 | 2.51 | 0.67 |
| Year Lowest Occurred | 1995 | 1999 | 1997 | 1994 | 1999 | 1995 | 1986 | 1971 | 1975 | 1990 | 1995 | 1972 | 1995 |
| Heating Degree Days (F) | 1030. | 901. | 931. | 847. | 755. | 599. | 491. | 439. | 515. | 700. | 825. | 968. | 9001. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |