| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 29.7 | 36.5 | 45.5 | 55.0 | 64.3 | 73.2 | 82.7 | 83.1 | 72.8 | 60.2 | 41.3 | 30.2 | 56.2 |
| Highest Mean Max. Temperature (F) | 35.0 | 42.6 | 58.7 | 64.1 | 73.5 | 82.6 | 89.3 | 88.6 | 81.6 | 71.7 | 48.0 | 37.4 | 89.3 |
| Year Highest Occurred | 1983 | 1992 | 1992 | 1987 | 1992 | 1977 | 1985 | 1971 | 1990 | 1988 | 1976 | 1989 | 1985 |
| Lowest Mean Max. Temperature (F) | 20.3 | 28.9 | 38.5 | 44.5 | 57.4 | 67.8 | 71.5 | 74.9 | 60.9 | 53.0 | 31.8 | 22.6 | 20.3 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1971 | 1993 | 1976 | 1985 | 1984 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 18.9 | 23.8 | 32.6 | 40.8 | 48.6 | 56.1 | 62.4 | 61.8 | 52.7 | 42.5 | 30.6 | 19.8 | 40.9 |
| Highest Mean Temperature (F) | 26.3 | 30.9 | 41.5 | 46.3 | 53.9 | 63.6 | 68.2 | 65.4 | 58.1 | 49.3 | 35.7 | 26.7 | 68.2 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1990 | 1993 | 1977 | 1975 | 1971 | 1998 | 1988 | 1981 | 1977 | 1975 |
| Lowest Mean Temperature (F) | 4.8 | 13.2 | 24.0 | 34.0 | 44.7 | 52.1 | 55.4 | 57.0 | 46.2 | 37.7 | 21.5 | 9.2 | 4.8 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1999 | 1991 | 1993 | 1985 | 1985 | 1984 | 1985 | 1978 | 1979 |
| Mean Min. Temperature (F) | 8.0 | 11.0 | 19.7 | 26.6 | 32.9 | 39.0 | 42.1 | 40.4 | 32.5 | 24.7 | 19.8 | 9.3 | 25.5 |
| Highest Mean Min. Temperature (F) | 18.5 | 22.5 | 27.5 | 30.9 | 37.5 | 44.7 | 50.3 | 46.1 | 38.9 | 29.9 | 28.0 | 18.8 | 50.3 |
| Year Highest Occurred | 1981 | 1978 | 1983 | 1978 | 1980 | 1977 | 1975 | 1983 | 1998 | 1975 | 1998 | 1973 | 1975 |
| Lowest Mean Min. Temperature (F) | -10.7 | -3.9 | 8.4 | 21.5 | 28.0 | 33.8 | 36.7 | 34.6 | 25.9 | 15.6 | 7.3 | -4.4 | -10.7 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1982 | 1982 | 1991 | 1996 | 1987 | 1999 | 1987 | 1993 | 1978 | 1979 |
| Mean Precipitation (in.) | 2.88 | 2.62 | 2.38 | 2.05 | 2.26 | 1.90 | 0.90 | 0.81 | 1.28 | 1.54 | 2.71 | 3.20 | 24.53 |
| Highest Precipitation (in.) | 6.93 | 6.52 | 5.07 | 5.34 | 5.94 | 3.91 | 1.96 | 2.80 | 3.78 | 4.66 | 9.49 | 9.59 | 9.59 |
| Year Highest Occurred | 1974 | 1979 | 1983 | 1978 | 1998 | 1995 | 1995 | 1995 | 1986 | 1975 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.37 | 0.42 | 0.13 | 0.22 | 0.16 | 0.16 | 0.06 | 0.00 | 0.00 | 0.00 | 0.30 | 0.17 | 0.00 |
| Year Lowest Occurred | 1985 | 1997 | 1994 | 1977 | 1974 | 1996 | 1971 | 2000 | 1999 | 1991 | 1976 | 1989 | 2000 |
| Heating Degree Days (F) | 1430. | 1156. | 1004. | 727. | 510. | 278. | 135. | 140. | 378. | 699. | 1034. | 1403. | 8894. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 11. | 53. | 39. | 6. | 0. | 0. | 0. | 109. |