| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 23.5 | 31.2 | 42.9 | 59.7 | 72.2 | 81.0 | 87.2 | 86.3 | 76.1 | 62.0 | 42.1 | 29.3 | 57.8 |
| Highest Mean Max. Temperature (F) | 37.8 | 45.1 | 55.1 | 69.1 | 81.0 | 92.0 | 94.3 | 94.3 | 85.6 | 68.1 | 56.2 | 42.4 | 94.3 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1974 | 1983 | 1978 | 1974 | 1999 | 1999 | 1974 |
| Lowest Mean Max. Temperature (F) | 9.4 | 15.7 | 33.4 | 48.7 | 64.5 | 74.5 | 75.7 | 78.8 | 68.5 | 56.2 | 29.7 | 10.8 | 9.4 |
| Year Lowest Occurred | 1978 | 1979 | 1996 | 1975 | 1996 | 1993 | 1992 | 1992 | 1985 | 1972 | 1996 | 1983 | 1978 |
| Mean Temperature (F) | 13.0 | 21.3 | 32.8 | 46.7 | 58.6 | 67.9 | 73.6 | 72.1 | 61.3 | 48.3 | 31.6 | 18.9 | 45.5 |
| Highest Mean Temperature (F) | 27.2 | 34.2 | 40.9 | 53.2 | 67.3 | 76.3 | 79.5 | 78.7 | 68.6 | 55.0 | 41.1 | 29.7 | 79.5 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1977 | 1977 | 1988 | 1974 | 1983 | 1978 | 1973 | 1999 | 1997 | 1974 |
| Lowest Mean Temperature (F) | -0.4 | 5.0 | 23.7 | 40.1 | 53.9 | 62.6 | 64.7 | 65.8 | 55.7 | 42.8 | 20.0 | 1.5 | -0.4 |
| Year Lowest Occurred | 1978 | 1979 | 1996 | 1995 | 1996 | 1982 | 1992 | 1992 | 1993 | 1972 | 1985 | 1983 | 1978 |
| Mean Min. Temperature (F) | 2.5 | 11.3 | 22.7 | 33.6 | 44.9 | 54.7 | 59.9 | 57.9 | 46.5 | 34.6 | 21.1 | 8.4 | 33.2 |
| Highest Mean Min. Temperature (F) | 16.6 | 24.3 | 32.9 | 39.8 | 53.7 | 61.3 | 64.7 | 63.1 | 51.6 | 44.0 | 29.4 | 21.1 | 64.7 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1991 | 1974 | 1983 | 1978 | 1973 | 1998 | 1997 | 1974 |
| Lowest Mean Min. Temperature (F) | -10.2 | -5.7 | 14.0 | 28.9 | 39.6 | 49.2 | 53.6 | 52.8 | 40.4 | 27.5 | 9.8 | -7.9 | -10.2 |
| Year Lowest Occurred | 1978 | 1979 | 1996 | 1996 | 1983 | 1982 | 1992 | 1992 | 1984 | 1999 | 1985 | 1983 | 1978 |
| Mean Precipitation (in.) | 0.37 | 0.51 | 1.19 | 1.92 | 2.97 | 3.17 | 3.00 | 2.41 | 1.85 | 1.64 | 0.60 | 0.33 | 19.96 |
| Highest Precipitation (in.) | 1.11 | 1.33 | 5.30 | 6.25 | 10.24 | 7.28 | 9.20 | 4.71 | 4.86 | 6.82 | 1.75 | 1.04 | 10.24 |
| Year Highest Occurred | 1975 | 1977 | 1977 | 1986 | 1972 | 1992 | 1993 | 1984 | 1996 | 1998 | 2000 | 1996 | 1972 |
| Lowest Precipitation (in.) | 0.00 | 0.02 | 0.08 | 0.09 | 0.53 | 1.12 | 0.00 | 0.06 | 0.00 | 0.14 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1978 | 1985 | 1971 | 1996 | 1976 | 1996 | 1975 | 1972 | 1998 | 1978 | 1999 | 1999 | 1978 |
| Heating Degree Days (F) | 1612. | 1225. | 999. | 551. | 238. | 59. | 17. | 26. | 166. | 519. | 1002. | 1430. | 7844. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 39. | 144. | 282. | 247. | 54. | 0. | 0. | 0. | 768. |