| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.7 | 34.1 | 38.8 | 46.0 | 56.5 | 67.3 | 73.1 | 71.3 | 64.0 | 53.8 | 39.2 | 32.0 | 50.6 |
| Highest Mean Max. Temperature (F) | 39.4 | 40.4 | 45.5 | 52.4 | 61.3 | 72.7 | 76.5 | 75.0 | 70.2 | 57.8 | 51.2 | 42.1 | 76.5 |
| Year Highest Occurred | 1981 | 2000 | 1999 | 1992 | 2000 | 1977 | 2000 | 2000 | 1998 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 21.3 | 28.8 | 33.8 | 38.7 | 50.0 | 63.0 | 68.7 | 69.2 | 59.0 | 43.8 | 31.6 | 26.0 | 21.3 |
| Year Lowest Occurred | 1979 | 1971 | 1971 | 1983 | 1995 | 1983 | 1992 | 1992 | 1985 | 1984 | 1979 | 1978 | 1979 |
| Mean Temperature (F) | 15.5 | 18.5 | 25.0 | 32.2 | 41.8 | 50.4 | 55.9 | 54.6 | 47.3 | 37.7 | 25.2 | 17.5 | 35.1 |
| Highest Mean Temperature (F) | 21.5 | 25.3 | 30.0 | 37.9 | 45.2 | 54.4 | 58.3 | 57.7 | 51.7 | 40.9 | 32.5 | 27.9 | 58.3 |
| Year Highest Occurred | 1981 | 1995 | 1999 | 1992 | 1992 | 1994 | 1998 | 2000 | 1998 | 1992 | 1999 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 6.9 | 12.1 | 19.5 | 25.8 | 37.8 | 47.3 | 53.1 | 52.1 | 43.8 | 31.9 | 17.0 | 12.1 | 6.9 |
| Year Lowest Occurred | 1979 | 1985 | 1977 | 1983 | 1983 | 1975 | 1992 | 1976 | 1985 | 1984 | 1979 | 1978 | 1979 |
| Mean Min. Temperature (F) | 0.2 | 2.9 | 11.2 | 18.4 | 27.1 | 33.5 | 38.6 | 37.8 | 30.6 | 21.5 | 11.2 | 3.0 | 19.7 |
| Highest Mean Min. Temperature (F) | 8.5 | 11.4 | 15.5 | 23.4 | 30.1 | 37.2 | 41.5 | 41.8 | 34.1 | 26.3 | 17.3 | 13.6 | 41.8 |
| Year Highest Occurred | 2000 | 1995 | 1990 | 1992 | 1996 | 1988 | 1998 | 1983 | 1997 | 1972 | 1995 | 1980 | 1983 |
| Lowest Mean Min. Temperature (F) | -8.0 | -5.2 | 4.7 | 12.9 | 23.9 | 30.3 | 36.6 | 34.2 | 26.9 | 17.9 | 2.4 | -1.9 | -8.0 |
| Year Lowest Occurred | 1984 | 1985 | 1977 | 1983 | 1972 | 1975 | 1993 | 1974 | 1971 | 1976 | 1979 | 1978 | 1984 |
| Mean Precipitation (in.) | 0.86 | 0.95 | 1.13 | 1.22 | 1.45 | 1.21 | 1.75 | 1.66 | 1.32 | 0.78 | 0.87 | 0.83 | 14.03 |
| Highest Precipitation (in.) | 3.10 | 2.57 | 2.45 | 1.87 | 2.90 | 2.01 | 3.71 | 3.69 | 2.44 | 1.49 | 1.99 | 2.80 | 3.71 |
| Year Highest Occurred | 1996 | 1995 | 1974 | 1995 | 1982 | 1984 | 1984 | 1984 | 1976 | 1984 | 1983 | 1983 | 1984 |
| Lowest Precipitation (in.) | 0.16 | 0.24 | 0.45 | 0.47 | 0.19 | 0.00 | 0.33 | 0.42 | 0.17 | 0.26 | 0.22 | 0.16 | 0.00 |
| Year Lowest Occurred | 1977 | 1991 | 1986 | 1978 | 1974 | 1980 | 1979 | 1985 | 1979 | 1989 | 1999 | 1994 | 1980 |
| Heating Degree Days (F) | 1536. | 1302. | 1240. | 983. | 720. | 438. | 284. | 324. | 532. | 848. | 1194. | 1473. | 10874. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |