| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 32.6 | 35.9 | 41.2 | 50.2 | 60.1 | 71.9 | 78.3 | 76.2 | 68.6 | 56.6 | 40.7 | 33.7 | 53.8 |
| Highest Mean Max. Temperature (F) | 42.0 | 42.2 | 48.8 | 57.8 | 66.7 | 78.5 | 82.4 | 81.1 | 73.9 | 62.6 | 53.4 | 44.2 | 82.4 |
| Year Highest Occurred | 1981 | 1995 | 1986 | 1981 | 1994 | 1994 | 2000 | 2000 | 1998 | 1992 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 21.8 | 30.2 | 35.3 | 41.6 | 53.5 | 66.6 | 74.3 | 72.9 | 63.2 | 48.0 | 32.6 | 25.4 | 21.8 |
| Year Lowest Occurred | 1979 | 1971 | 1971 | 1973 | 1995 | 1975 | 1973 | 1979 | 1971 | 1984 | 1979 | 1978 | 1979 |
| Mean Temperature (F) | 19.2 | 21.8 | 28.0 | 35.1 | 44.0 | 53.5 | 59.4 | 57.0 | 48.9 | 38.7 | 27.0 | 20.5 | 37.8 |
| Highest Mean Temperature (F) | 25.8 | 28.9 | 34.5 | 41.3 | 48.6 | 58.3 | 63.1 | 61.7 | 53.7 | 42.4 | 33.6 | 31.0 | 63.1 |
| Year Highest Occurred | 1986 | 2000 | 1986 | 1981 | 2000 | 1988 | 1998 | 2000 | 1998 | 1988 | 1998 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 7.9 | 14.9 | 22.9 | 28.4 | 39.6 | 49.0 | 56.6 | 53.0 | 44.3 | 32.9 | 19.0 | 12.8 | 7.9 |
| Year Lowest Occurred | 1979 | 1989 | 1977 | 1983 | 1983 | 1975 | 1973 | 1974 | 1971 | 1984 | 1979 | 1978 | 1979 |
| Mean Min. Temperature (F) | 5.8 | 7.6 | 14.7 | 20.0 | 27.9 | 35.0 | 40.5 | 37.8 | 29.2 | 20.8 | 13.3 | 7.3 | 21.7 |
| Highest Mean Min. Temperature (F) | 13.1 | 16.2 | 20.3 | 24.7 | 32.4 | 40.1 | 45.4 | 42.2 | 36.8 | 25.3 | 22.5 | 17.8 | 45.4 |
| Year Highest Occurred | 2000 | 2000 | 1986 | 1981 | 1987 | 1988 | 1998 | 2000 | 1997 | 1990 | 1998 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -6.0 | -1.7 | 9.0 | 15.0 | 24.5 | 31.4 | 37.2 | 32.6 | 24.1 | 15.8 | 3.7 | 0.0 | -6.0 |
| Year Lowest Occurred | 1979 | 1989 | 1977 | 1983 | 1978 | 1975 | 1993 | 1974 | 1974 | 1976 | 2000 | 1986 | 1979 |
| Mean Precipitation (in.) | 0.85 | 0.79 | 1.22 | 1.57 | 1.80 | 1.40 | 1.44 | 1.44 | 1.27 | 0.92 | 1.01 | 0.88 | 14.59 |
| Highest Precipitation (in.) | 1.98 | 2.00 | 2.31 | 3.56 | 5.66 | 2.65 | 2.77 | 2.75 | 3.40 | 2.37 | 2.37 | 2.09 | 5.66 |
| Year Highest Occurred | 1988 | 1989 | 1990 | 1986 | 1995 | 1991 | 1990 | 1997 | 1997 | 1990 | 1983 | 1983 | 1995 |
| Lowest Precipitation (in.) | 0.24 | 0.26 | 0.56 | 0.70 | 0.40 | 0.36 | 0.18 | 0.33 | 0.37 | 0.20 | 0.29 | 0.13 | 0.13 |
| Year Lowest Occurred | 1986 | 1992 | 1997 | 1982 | 1974 | 1994 | 1994 | 1988 | 1979 | 1976 | 1990 | 1991 | 1991 |
| Heating Degree Days (F) | 1420. | 1211. | 1148. | 898. | 651. | 348. | 179. | 252. | 484. | 816. | 1141. | 1381. | 9929. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 1. | 4. | 3. | 0. | 0. | 0. | 0. | 8. |