| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 19.6 | 25.8 | 34.5 | 46.5 | 57.4 | 67.6 | 74.9 | 73.0 | 64.5 | 52.6 | 37.2 | 24.5 | 48.2 |
| Highest Mean Max. Temperature (F) | 29.8 | 35.4 | 42.3 | 54.9 | 66.0 | 74.9 | 81.8 | 79.2 | 71.6 | 57.1 | 45.4 | 32.8 | 81.8 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1980 | 1988 | 1988 | 1983 | 1998 | 1977 | 1999 | 1997 | 1988 |
| Lowest Mean Max. Temperature (F) | 9.0 | 12.4 | 26.3 | 40.7 | 48.3 | 62.8 | 68.6 | 68.5 | 58.6 | 47.9 | 29.3 | 13.6 | 9.0 |
| Year Lowest Occurred | 1979 | 1979 | 1996 | 1975 | 1997 | 1993 | 1997 | 1979 | 1993 | 1988 | 1995 | 1983 | 1979 |
| Mean Temperature (F) | 10.4 | 16.6 | 26.4 | 38.5 | 48.4 | 57.9 | 65.8 | 65.3 | 56.4 | 45.2 | 30.5 | 16.7 | 39.8 |
| Highest Mean Temperature (F) | 20.8 | 30.8 | 34.5 | 45.0 | 53.3 | 63.8 | 70.4 | 71.5 | 62.9 | 49.2 | 38.8 | 27.8 | 71.5 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1988 | 1987 | 1988 | 1983 | 1998 | 1973 | 1999 | 1997 | 1983 |
| Lowest Mean Temperature (F) | -0.5 | 3.1 | 17.9 | 33.0 | 42.8 | 53.9 | 60.7 | 60.2 | 51.1 | 40.2 | 22.9 | 5.0 | -0.5 |
| Year Lowest Occurred | 1994 | 1979 | 1996 | 1975 | 1996 | 1972 | 1992 | 1977 | 1974 | 1976 | 1995 | 1983 | 1994 |
| Mean Min. Temperature (F) | 1.1 | 7.4 | 18.3 | 30.5 | 39.3 | 48.1 | 56.7 | 57.5 | 48.2 | 37.8 | 23.7 | 8.8 | 31.5 |
| Highest Mean Min. Temperature (F) | 13.2 | 26.1 | 26.6 | 35.7 | 44.0 | 52.9 | 61.5 | 63.8 | 54.1 | 42.0 | 32.1 | 22.7 | 63.8 |
| Year Highest Occurred | 1998 | 1998 | 2000 | 1998 | 1998 | 1987 | 1998 | 1983 | 1998 | 1994 | 1999 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -11.4 | -6.2 | 9.5 | 25.0 | 33.7 | 42.1 | 50.8 | 50.5 | 42.0 | 31.2 | 15.1 | -6.4 | -11.4 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1972 | 1972 | 1972 | 1972 | 1985 | 1974 | 1976 | 1976 | 1976 | 1982 |
| Mean Precipitation (in.) | 0.95 | 0.53 | 1.37 | 1.58 | 2.26 | 3.71 | 3.73 | 3.69 | 3.71 | 1.89 | 1.39 | 0.79 | 25.60 |
| Highest Precipitation (in.) | 2.72 | 1.65 | 5.08 | 4.93 | 5.06 | 8.40 | 9.15 | 8.42 | 8.13 | 5.87 | 4.04 | 2.87 | 9.15 |
| Year Highest Occurred | 1975 | 1971 | 1977 | 1981 | 1985 | 1979 | 1978 | 1978 | 1990 | 1971 | 1983 | 1983 | 1978 |
| Lowest Precipitation (in.) | 0.15 | 0.00 | 0.05 | 0.00 | 0.17 | 0.00 | 0.76 | 0.35 | 0.60 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1991 | 1996 | 1993 | 1997 | 1976 | 1995 | 1989 | 1991 | 1974 | 1989 | 1994 | 1994 | 1996 |
| Heating Degree Days (F) | 1693. | 1356. | 1197. | 794. | 516. | 231. | 72. | 88. | 274. | 614. | 1036. | 1500. | 9371. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 16. | 96. | 97. | 15. | 0. | 0. | 0. | 224. |