| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 25.7 | 31.3 | 37.8 | 45.6 | 55.7 | 66.6 | 75.5 | 75.0 | 65.2 | 52.2 | 34.9 | 26.0 | 49.3 |
| Highest Mean Max. Temperature (F) | 35.7 | 38.0 | 45.8 | 58.9 | 63.7 | 76.7 | 82.1 | 82.7 | 74.1 | 63.3 | 46.6 | 34.9 | 82.7 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1992 | 1988 | 1988 | 1971 | 1990 | 1988 | 1999 | 1980 | 1971 |
| Lowest Mean Max. Temperature (F) | 16.7 | 24.8 | 31.0 | 36.4 | 48.0 | 58.5 | 63.0 | 68.8 | 56.9 | 45.4 | 27.7 | 18.0 | 16.7 |
| Year Lowest Occurred | 1979 | 1985 | 1971 | 1975 | 1975 | 1998 | 1993 | 1998 | 1986 | 1982 | 1985 | 1978 | 1979 |
| Mean Temperature (F) | 11.9 | 15.7 | 22.9 | 31.6 | 41.2 | 49.9 | 56.3 | 55.1 | 45.8 | 35.4 | 21.7 | 11.9 | 33.3 |
| Highest Mean Temperature (F) | 18.4 | 22.8 | 30.5 | 37.5 | 46.4 | 55.3 | 59.3 | 61.4 | 52.8 | 40.9 | 31.1 | 20.4 | 61.4 |
| Year Highest Occurred | 1998 | 1995 | 1992 | 1987 | 1987 | 1988 | 1974 | 1971 | 1998 | 1988 | 1999 | 1980 | 1971 |
| Lowest Mean Temperature (F) | 1.3 | 5.2 | 14.5 | 24.9 | 35.4 | 45.3 | 48.0 | 50.6 | 41.1 | 29.2 | 14.0 | 1.2 | 1.2 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1975 | 1975 | 1998 | 1993 | 1975 | 1985 | 1984 | 1994 | 1990 | 1990 |
| Mean Min. Temperature (F) | -1.9 | 0.0 | 8.0 | 17.6 | 26.6 | 33.2 | 37.1 | 35.1 | 26.4 | 18.5 | 8.5 | -2.3 | 17.2 |
| Highest Mean Min. Temperature (F) | 7.9 | 11.5 | 15.1 | 22.6 | 30.9 | 37.4 | 40.9 | 41.4 | 34.6 | 22.9 | 19.2 | 8.2 | 41.4 |
| Year Highest Occurred | 2000 | 1986 | 1992 | 2000 | 1981 | 1977 | 1975 | 1983 | 1998 | 2000 | 1998 | 1996 | 1983 |
| Lowest Mean Min. Temperature (F) | -14.1 | -14.3 | -5.1 | 12.5 | 22.7 | 30.6 | 32.8 | 30.3 | 21.5 | 11.9 | -2.3 | -15.6 | -15.6 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1982 | 1975 | 1975 | 1988 | 1995 | 1988 | 1987 | 1993 | 1990 | 1990 |
| Mean Precipitation (in.) | 3.92 | 3.08 | 2.69 | 2.26 | 2.74 | 2.31 | 1.68 | 1.68 | 1.79 | 1.96 | 3.39 | 4.04 | 31.54 |
| Highest Precipitation (in.) | 7.39 | 8.55 | 4.86 | 4.22 | 5.11 | 5.47 | 3.45 | 3.16 | 3.85 | 3.93 | 6.44 | 11.90 | 11.90 |
| Year Highest Occurred | 1999 | 1986 | 1995 | 1975 | 1996 | 1998 | 1985 | 1997 | 1973 | 1983 | 1995 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.55 | 0.90 | 0.61 | 0.70 | 0.83 | 0.32 | 0.28 | 0.17 | 0.03 | 0.20 | 0.35 | 0.70 | 0.03 |
| Year Lowest Occurred | 1992 | 1984 | 1994 | 1977 | 1992 | 1988 | 1974 | 1988 | 1987 | 1987 | 1976 | 1986 | 1987 |
| Heating Degree Days (F) | 1647. | 1383. | 1306. | 1002. | 740. | 454. | 277. | 314. | 576. | 919. | 1299. | 1648. | 11565. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 6. | 5. | 0. | 0. | 0. | 0. | 11. |