| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 24.7 | 28.3 | 33.0 | 38.5 | 47.2 | 58.4 | 64.7 | 62.4 | 56.2 | 45.6 | 32.4 | 26.0 | 43.1 |
| Highest Mean Max. Temperature (F) | 34.1 | 36.4 | 39.0 | 45.6 | 50.6 | 64.7 | 70.2 | 67.2 | 62.5 | 50.3 | 44.2 | 36.4 | 70.2 |
| Year Highest Occurred | 1981 | 1995 | 1986 | 1981 | 2000 | 1981 | 1980 | 1995 | 1979 | 1979 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 17.9 | 19.8 | 25.5 | 30.7 | 42.8 | 53.7 | 60.2 | 58.3 | 50.3 | 36.8 | 24.9 | 19.4 | 17.9 |
| Year Lowest Occurred | 1979 | 1971 | 1971 | 1973 | 1971 | 1983 | 1973 | 1987 | 1972 | 1984 | 2000 | 1996 | 1979 |
| Mean Temperature (F) | 12.7 | 15.2 | 19.9 | 25.7 | 35.3 | 45.7 | 51.7 | 50.1 | 43.5 | 33.4 | 20.4 | 14.2 | 30.7 |
| Highest Mean Temperature (F) | 20.6 | 20.6 | 25.7 | 32.6 | 39.3 | 50.1 | 55.8 | 52.7 | 47.6 | 37.5 | 26.6 | 24.4 | 55.8 |
| Year Highest Occurred | 1981 | 1995 | 1986 | 1981 | 2000 | 1990 | 1980 | 1983 | 1998 | 1992 | 1999 | 1980 | 1980 |
| Lowest Mean Temperature (F) | 6.1 | 9.8 | 14.0 | 17.7 | 30.9 | 41.1 | 48.4 | 48.0 | 38.6 | 27.0 | 14.1 | 9.5 | 6.1 |
| Year Lowest Occurred | 1979 | 1971 | 1988 | 1973 | 1973 | 1995 | 1992 | 1972 | 1971 | 1984 | 2000 | 1978 | 1979 |
| Mean Min. Temperature (F) | 0.6 | 2.1 | 6.8 | 12.8 | 23.3 | 33.0 | 38.7 | 37.7 | 30.7 | 21.1 | 8.3 | 2.4 | 18.1 |
| Highest Mean Min. Temperature (F) | 7.5 | 7.0 | 12.3 | 19.6 | 28.6 | 36.5 | 41.6 | 41.3 | 35.1 | 25.7 | 13.0 | 12.3 | 41.6 |
| Year Highest Occurred | 1986 | 2000 | 1986 | 1981 | 1996 | 1988 | 1998 | 1983 | 1990 | 1988 | 1973 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -6.8 | -3.4 | -1.0 | 4.7 | 18.2 | 27.2 | 34.3 | 32.8 | 25.3 | 15.5 | 0.6 | -2.5 | -6.8 |
| Year Lowest Occurred | 1995 | 1985 | 1988 | 1973 | 1995 | 1995 | 1993 | 1978 | 1993 | 1995 | 1994 | 1978 | 1995 |
| Mean Precipitation (in.) | 2.04 | 1.75 | 2.35 | 2.38 | 2.10 | 1.13 | 2.24 | 2.09 | 1.49 | 1.42 | 1.96 | 1.84 | 22.79 |
| Highest Precipitation (in.) | 5.20 | 4.27 | 3.64 | 3.79 | 5.28 | 2.70 | 5.51 | 4.99 | 3.22 | 3.15 | 3.82 | 5.30 | 5.51 |
| Year Highest Occurred | 1996 | 1986 | 1991 | 1997 | 1973 | 1984 | 1998 | 1984 | 1985 | 1984 | 1979 | 1973 | 1998 |
| Lowest Precipitation (in.) | 0.35 | 0.66 | 1.08 | 0.56 | 0.49 | 0.00 | 0.11 | 0.47 | 0.20 | 0.48 | 0.53 | 0.34 | 0.00 |
| Year Lowest Occurred | 1984 | 1982 | 1997 | 1987 | 1974 | 1994 | 1994 | 1993 | 1989 | 1973 | 1980 | 1986 | 1994 |
| Heating Degree Days (F) | 1623. | 1394. | 1383. | 1181. | 922. | 580. | 412. | 464. | 646. | 982. | 1340. | 1575. | 12502. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |