| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 21.4 | 27.6 | 37.5 | 49.2 | 60.7 | 67.0 | 68.8 | 66.3 | 57.3 | 41.9 | 27.4 | 23.1 | 45.7 |
| Highest Mean Max. Temperature (F) | 36.6 | 38.2 | 46.1 | 55.0 | 65.7 | 69.6 | 73.2 | 69.7 | 61.5 | 47.3 | 36.4 | 32.1 | 73.2 |
| Year Highest Occurred | 1981 | 1977 | 1984 | 1998 | 1981 | 1977 | 1972 | 1977 | 1979 | 1979 | 1976 | 1985 | 1972 |
| Lowest Mean Max. Temperature (F) | 8.2 | 12.9 | 27.6 | 40.5 | 54.4 | 63.3 | 64.9 | 62.4 | 48.4 | 34.2 | 17.2 | 11.7 | 8.2 |
| Year Lowest Occurred | 1971 | 1990 | 1972 | 1972 | 1971 | 1975 | 1981 | 1998 | 1992 | 1982 | 1990 | 1980 | 1971 |
| Mean Temperature (F) | 14.2 | 18.7 | 26.5 | 36.3 | 45.6 | 53.1 | 56.8 | 54.6 | 46.3 | 33.5 | 20.4 | 16.1 | 35.2 |
| Highest Mean Temperature (F) | 31.4 | 31.7 | 36.2 | 41.5 | 50.1 | 56.1 | 60.0 | 57.3 | 51.7 | 39.1 | 31.0 | 26.7 | 60.0 |
| Year Highest Occurred | 1981 | 1977 | 1984 | 1998 | 1981 | 1990 | 1997 | 1977 | 1995 | 1979 | 1976 | 1985 | 1997 |
| Lowest Mean Temperature (F) | -1.0 | 0.8 | 13.8 | 25.5 | 40.6 | 50.4 | 53.8 | 51.5 | 38.7 | 25.5 | 9.0 | 5.4 | -1.0 |
| Year Lowest Occurred | 1971 | 1990 | 1972 | 1972 | 1971 | 1975 | 1982 | 1973 | 1992 | 1996 | 1990 | 1980 | 1971 |
| Mean Min. Temperature (F) | 7.0 | 9.7 | 15.4 | 23.4 | 30.5 | 39.1 | 44.7 | 42.8 | 35.2 | 25.1 | 13.3 | 9.0 | 24.6 |
| Highest Mean Min. Temperature (F) | 26.3 | 25.1 | 26.3 | 28.0 | 34.5 | 43.3 | 48.6 | 46.5 | 42.0 | 30.8 | 25.6 | 21.2 | 48.6 |
| Year Highest Occurred | 1977 | 1977 | 1984 | 1998 | 1981 | 1990 | 1997 | 1989 | 1995 | 1979 | 1976 | 1985 | 1997 |
| Lowest Mean Min. Temperature (F) | -10.5 | -11.3 | -0.3 | 10.5 | 26.8 | 35.8 | 41.0 | 39.9 | 29.0 | 16.0 | 0.8 | -3.0 | -11.3 |
| Year Lowest Occurred | 1989 | 1990 | 1971 | 1972 | 1971 | 1986 | 1982 | 1980 | 1992 | 1996 | 1990 | 1979 | 1990 |
| Mean Precipitation (in.) | 1.00 | 0.86 | 0.75 | 0.44 | 0.82 | 1.49 | 2.25 | 2.63 | 3.10 | 1.74 | 1.39 | 1.40 | 17.87 |
| Highest Precipitation (in.) | 5.08 | 2.95 | 2.51 | 1.65 | 2.08 | 2.66 | 4.53 | 5.12 | 6.28 | 4.51 | 4.61 | 4.57 | 6.28 |
| Year Highest Occurred | 2000 | 1996 | 1979 | 1975 | 1997 | 1994 | 1981 | 1997 | 1993 | 1983 | 1979 | 1990 | 1993 |
| Lowest Precipitation (in.) | 0.00 | 0.08 | 0.00 | 0.01 | 0.07 | 0.30 | 0.53 | 0.97 | 0.91 | 0.36 | 0.05 | 0.02 | 0.00 |
| Year Lowest Occurred | 1974 | 1994 | 1998 | 1993 | 1996 | 1986 | 1990 | 1977 | 1973 | 1984 | 1995 | 1995 | 1974 |
| Heating Degree Days (F) | 1575. | 1297. | 1196. | 861. | 602. | 358. | 256. | 325. | 563. | 976. | 1340. | 1519. | 10868. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |