| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 26.0 | 29.5 | 36.4 | 45.1 | 56.9 | 67.6 | 73.8 | 72.5 | 64.7 | 53.0 | 35.3 | 27.1 | 49.0 |
| Highest Mean Max. Temperature (F) | 34.2 | 36.3 | 42.9 | 53.8 | 63.5 | 72.8 | 80.6 | 75.7 | 70.7 | 61.2 | 50.3 | 38.9 | 80.6 |
| Year Highest Occurred | 1981 | 1995 | 1999 | 1992 | 2000 | 2000 | 2000 | 2000 | 1998 | 1999 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 16.1 | 23.6 | 30.3 | 37.4 | 50.5 | 62.6 | 69.9 | 69.9 | 59.0 | 44.1 | 26.1 | 19.0 | 16.1 |
| Year Lowest Occurred | 1979 | 1985 | 1980 | 1983 | 1995 | 1983 | 1992 | 1987 | 1986 | 1984 | 1979 | 1978 | 1979 |
| Mean Temperature (F) | 15.3 | 17.5 | 23.7 | 31.9 | 42.0 | 50.5 | 56.3 | 55.0 | 47.2 | 37.3 | 23.5 | 16.3 | 34.7 |
| Highest Mean Temperature (F) | 21.1 | 24.7 | 29.9 | 39.1 | 48.5 | 55.4 | 62.0 | 60.4 | 52.4 | 42.5 | 34.7 | 27.5 | 62.0 |
| Year Highest Occurred | 1986 | 1995 | 1972 | 1992 | 2000 | 1988 | 2000 | 2000 | 2000 | 1999 | 1999 | 1980 | 2000 |
| Lowest Mean Temperature (F) | 5.4 | 11.6 | 17.5 | 24.3 | 37.3 | 47.5 | 53.0 | 51.8 | 41.7 | 32.2 | 13.1 | 7.6 | 5.4 |
| Year Lowest Occurred | 1979 | 1985 | 1977 | 1983 | 1983 | 1982 | 1993 | 1978 | 1971 | 1984 | 1979 | 1978 | 1979 |
| Mean Min. Temperature (F) | 4.5 | 5.4 | 11.0 | 18.6 | 27.1 | 33.3 | 38.7 | 37.4 | 29.7 | 21.5 | 11.7 | 5.5 | 20.4 |
| Highest Mean Min. Temperature (F) | 11.2 | 13.5 | 19.0 | 25.0 | 33.4 | 38.3 | 43.4 | 45.1 | 35.4 | 26.8 | 19.1 | 16.2 | 45.1 |
| Year Highest Occurred | 2000 | 2000 | 1974 | 2000 | 2000 | 1988 | 2000 | 2000 | 2000 | 1972 | 1995 | 1980 | 2000 |
| Lowest Mean Min. Temperature (F) | -5.3 | -2.1 | 2.0 | 11.1 | 22.5 | 30.1 | 34.5 | 32.3 | 23.8 | 14.6 | 0.2 | -3.8 | -5.3 |
| Year Lowest Occurred | 1979 | 1973 | 1977 | 1983 | 1979 | 1979 | 1978 | 1978 | 1978 | 1976 | 1979 | 1978 | 1979 |
| Mean Precipitation (in.) | 1.09 | 0.87 | 0.96 | 1.22 | 1.60 | 1.25 | 1.76 | 1.31 | 1.39 | 1.14 | 1.07 | 1.00 | 14.66 |
| Highest Precipitation (in.) | 4.00 | 1.98 | 2.16 | 3.19 | 4.05 | 2.20 | 4.19 | 3.10 | 5.20 | 2.59 | 3.22 | 2.88 | 5.20 |
| Year Highest Occurred | 1996 | 1986 | 1991 | 1997 | 1981 | 1987 | 1983 | 1977 | 1997 | 1972 | 1985 | 1996 | 1997 |
| Lowest Precipitation (in.) | 0.19 | 0.13 | 0.12 | 0.28 | 0.22 | 0.02 | 0.40 | 0.41 | 0.32 | 0.11 | 0.24 | 0.08 | 0.02 |
| Year Lowest Occurred | 1992 | 1985 | 1997 | 1979 | 1986 | 1980 | 1972 | 1988 | 1987 | 2000 | 1976 | 1993 | 1980 |
| Heating Degree Days (F) | 1542. | 1332. | 1281. | 994. | 713. | 437. | 272. | 313. | 534. | 861. | 1245. | 1510. | 11034. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 1. | 0. | 0. | 0. | 0. | 1. |