| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 34.0 | 39.4 | 49.1 | 58.2 | 67.7 | 78.7 | 86.9 | 85.8 | 76.2 | 63.7 | 46.1 | 35.4 | 60.1 |
| Highest Mean Max. Temperature (F) | 44.4 | 47.1 | 56.9 | 66.0 | 73.5 | 84.8 | 90.7 | 89.0 | 83.8 | 71.3 | 58.1 | 44.8 | 90.7 |
| Year Highest Occurred | 1981 | 1995 | 1986 | 1987 | 1992 | 1977 | 1978 | 1981 | 1979 | 1988 | 1999 | 1980 | 1978 |
| Lowest Mean Max. Temperature (F) | 25.2 | 27.8 | 43.1 | 48.7 | 60.9 | 70.7 | 79.3 | 80.7 | 68.7 | 53.9 | 35.7 | 25.8 | 25.2 |
| Year Lowest Occurred | 1984 | 1989 | 1973 | 1975 | 1995 | 1998 | 1993 | 1993 | 1986 | 1984 | 2000 | 1990 | 1984 |
| Mean Temperature (F) | 22.0 | 26.0 | 35.7 | 43.7 | 52.1 | 60.6 | 67.8 | 66.7 | 57.5 | 46.7 | 33.4 | 23.9 | 44.7 |
| Highest Mean Temperature (F) | 30.9 | 33.6 | 41.6 | 49.7 | 57.0 | 65.1 | 70.2 | 69.9 | 62.9 | 51.5 | 40.7 | 32.0 | 70.2 |
| Year Highest Occurred | 1981 | 1995 | 1986 | 1992 | 1992 | 1977 | 1989 | 2000 | 1990 | 1988 | 1999 | 1995 | 1989 |
| Lowest Mean Temperature (F) | 13.3 | 15.9 | 30.0 | 37.3 | 47.9 | 55.6 | 61.2 | 63.0 | 52.6 | 40.4 | 25.5 | 13.5 | 13.3 |
| Year Lowest Occurred | 1989 | 1989 | 1976 | 1975 | 1975 | 1998 | 1993 | 1975 | 1986 | 1984 | 2000 | 1990 | 1989 |
| Mean Min. Temperature (F) | 10.0 | 12.5 | 22.3 | 29.1 | 36.5 | 42.5 | 48.7 | 47.5 | 38.8 | 29.6 | 20.7 | 12.3 | 29.2 |
| Highest Mean Min. Temperature (F) | 19.5 | 22.6 | 27.8 | 33.7 | 40.5 | 45.7 | 51.5 | 52.7 | 45.6 | 33.9 | 25.7 | 21.1 | 52.7 |
| Year Highest Occurred | 1999 | 2000 | 1992 | 1992 | 1992 | 1986 | 1985 | 2000 | 1990 | 1972 | 1995 | 1995 | 2000 |
| Lowest Mean Min. Temperature (F) | -0.5 | 1.9 | 14.5 | 24.5 | 32.3 | 38.4 | 43.1 | 41.6 | 33.3 | 23.6 | 13.0 | 1.3 | -0.5 |
| Year Lowest Occurred | 1989 | 1974 | 1976 | 1982 | 1975 | 1976 | 1993 | 1975 | 1975 | 1976 | 1993 | 1990 | 1989 |
| Mean Precipitation (in.) | 1.14 | 1.03 | 1.38 | 1.52 | 1.97 | 1.05 | 0.85 | 0.80 | 1.38 | 1.52 | 1.53 | 1.03 | 15.20 |
| Highest Precipitation (in.) | 3.92 | 2.80 | 2.40 | 3.83 | 4.09 | 3.84 | 1.95 | 3.18 | 7.05 | 3.71 | 3.78 | 3.35 | 7.05 |
| Year Highest Occurred | 1980 | 1980 | 1980 | 1986 | 1995 | 1998 | 1993 | 1983 | 1982 | 1972 | 1985 | 1983 | 1982 |
| Lowest Precipitation (in.) | 0.23 | 0.24 | 0.34 | 0.06 | 0.10 | 0.00 | 0.01 | 0.00 | 0.00 | 0.05 | 0.03 | 0.04 | 0.00 |
| Year Lowest Occurred | 1984 | 1984 | 1992 | 1987 | 1972 | 1977 | 1978 | 1985 | 1974 | 1990 | 1976 | 1976 | 1977 |
| Heating Degree Days (F) | 1333. | 1093. | 909. | 641. | 401. | 162. | 31. | 44. | 239. | 569. | 949. | 1276. | 7647. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 29. | 117. | 94. | 14. | 0. | 0. | 0. | 255. |