| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 27.6 | 32.6 | 40.8 | 50.7 | 60.6 | 69.9 | 78.6 | 78.2 | 68.0 | 55.7 | 37.5 | 28.0 | 52.4 |
| Highest Mean Max. Temperature (F) | 35.7 | 40.6 | 48.4 | 61.4 | 68.5 | 77.7 | 84.3 | 85.0 | 76.0 | 64.8 | 45.7 | 39.3 | 85.0 |
| Year Highest Occurred | 1981 | 1977 | 1994 | 1987 | 1992 | 1988 | 1985 | 1971 | 1979 | 1988 | 1999 | 1980 | 1971 |
| Lowest Mean Max. Temperature (F) | 12.0 | 19.1 | 34.8 | 41.2 | 54.0 | 61.6 | 66.7 | 71.3 | 58.2 | 48.5 | 27.4 | 17.1 | 12.0 |
| Year Lowest Occurred | 1979 | 1989 | 1999 | 1975 | 1996 | 1998 | 1993 | 1993 | 1986 | 1984 | 2000 | 1983 | 1979 |
| Mean Temperature (F) | 14.0 | 17.6 | 26.4 | 35.6 | 44.3 | 52.5 | 57.6 | 56.1 | 47.2 | 37.5 | 24.2 | 14.7 | 35.6 |
| Highest Mean Temperature (F) | 22.6 | 27.3 | 33.3 | 41.0 | 49.2 | 57.9 | 62.1 | 60.0 | 52.9 | 42.7 | 31.2 | 25.3 | 62.1 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1987 | 1993 | 1988 | 1998 | 1983 | 1998 | 1988 | 1999 | 1980 | 1998 |
| Lowest Mean Temperature (F) | -2.0 | 4.3 | 16.7 | 26.3 | 40.4 | 49.2 | 50.8 | 52.4 | 42.4 | 32.8 | 13.5 | 2.9 | -2.0 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1975 | 1998 | 1993 | 1987 | 1971 | 1984 | 2000 | 1983 | 1979 |
| Mean Min. Temperature (F) | 0.4 | 2.5 | 11.9 | 20.4 | 28.0 | 35.0 | 36.6 | 33.9 | 26.3 | 19.2 | 10.8 | 1.4 | 18.9 |
| Highest Mean Min. Temperature (F) | 9.8 | 14.8 | 18.9 | 24.1 | 31.5 | 38.0 | 42.6 | 40.1 | 33.1 | 23.4 | 20.9 | 11.3 | 42.6 |
| Year Highest Occurred | 1994 | 1991 | 1987 | 1978 | 1993 | 1988 | 1998 | 1983 | 1998 | 1983 | 1995 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -16.0 | -10.5 | -1.8 | 11.4 | 22.5 | 31.3 | 33.1 | 29.0 | 21.3 | 10.6 | -0.4 | -11.3 | -16.0 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1973 | 1978 | 1999 | 1988 | 1971 | 1987 | 2000 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.62 | 0.51 | 0.67 | 0.98 | 1.70 | 1.78 | 1.28 | 1.12 | 0.99 | 0.74 | 0.81 | 0.70 | 11.90 |
| Highest Precipitation (in.) | 1.48 | 1.25 | 1.34 | 2.01 | 4.32 | 3.88 | 3.02 | 2.33 | 2.53 | 2.17 | 2.22 | 2.17 | 4.32 |
| Year Highest Occurred | 1997 | 1996 | 1999 | 1975 | 1981 | 1993 | 1983 | 1985 | 1976 | 2000 | 1995 | 1996 | 1981 |
| Lowest Precipitation (in.) | 0.04 | 0.02 | 0.23 | 0.13 | 0.42 | 0.20 | 0.05 | 0.02 | 0.01 | 0.00 | 0.19 | 0.05 | 0.00 |
| Year Lowest Occurred | 1981 | 1977 | 1978 | 1977 | 1979 | 1974 | 1999 | 2000 | 1987 | 1987 | 1976 | 1976 | 1987 |
| Heating Degree Days (F) | 1580. | 1330. | 1199. | 884. | 642. | 378. | 237. | 282. | 535. | 855. | 1226. | 1560. | 10708. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 8. | 4. | 0. | 0. | 0. | 0. | 12. |