| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 12.6 | 19.9 | 31.5 | 50.3 | 66.5 | 74.7 | 79.1 | 78.6 | 67.7 | 53.5 | 32.3 | 17.9 | 48.7 |
| Highest Mean Max. Temperature (F) | 27.8 | 31.9 | 43.5 | 61.3 | 76.4 | 84.3 | 85.4 | 86.0 | 76.3 | 58.5 | 46.7 | 30.5 | 86.0 |
| Year Highest Occurred | 1990 | 2000 | 2000 | 1980 | 1977 | 1988 | 1989 | 1983 | 1998 | 1989 | 1999 | 1999 | 1983 |
| Lowest Mean Max. Temperature (F) | -1.1 | 3.6 | 21.2 | 36.4 | 55.3 | 67.7 | 70.4 | 71.9 | 62.0 | 47.1 | 20.0 | 5.0 | -1.1 |
| Year Lowest Occurred | 1994 | 1979 | 1996 | 1979 | 1974 | 1982 | 1992 | 1977 | 1985 | 1991 | 1996 | 1983 | 1994 |
| Mean Temperature (F) | 2.5 | 9.7 | 22.2 | 39.3 | 53.9 | 62.8 | 66.9 | 65.4 | 54.7 | 41.7 | 23.4 | 8.5 | 37.6 |
| Highest Mean Temperature (F) | 17.7 | 24.3 | 33.3 | 48.1 | 63.0 | 70.2 | 70.9 | 71.4 | 61.8 | 47.4 | 35.1 | 22.6 | 71.4 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1988 | 1983 | 1983 | 1998 | 1973 | 1999 | 1997 | 1983 |
| Lowest Mean Temperature (F) | -12.7 | -6.4 | 13.1 | 28.8 | 45.5 | 55.6 | 60.5 | 58.8 | 49.6 | 36.6 | 11.7 | -5.0 | -12.7 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1979 | 1979 | 1982 | 1992 | 1977 | 1984 | 1976 | 1996 | 1983 | 1982 |
| Mean Min. Temperature (F) | -7.7 | -0.5 | 12.9 | 28.3 | 41.3 | 50.8 | 54.6 | 52.1 | 41.6 | 29.8 | 14.5 | -0.9 | 26.4 |
| Highest Mean Min. Temperature (F) | 7.6 | 19.0 | 25.6 | 35.2 | 49.6 | 57.9 | 58.4 | 57.5 | 47.3 | 36.6 | 23.5 | 16.1 | 58.4 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1995 | 1997 | 1998 | 1998 | 1994 | 1999 | 1997 | 1997 |
| Lowest Mean Min. Temperature (F) | -25.4 | -16.4 | 1.8 | 21.1 | 32.5 | 43.4 | 49.4 | 45.5 | 35.0 | 22.1 | 3.3 | -15.0 | -25.4 |
| Year Lowest Occurred | 1982 | 1979 | 1979 | 1979 | 1983 | 1982 | 1972 | 1979 | 1984 | 1976 | 1996 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.66 | 0.43 | 0.94 | 1.17 | 2.27 | 3.62 | 3.25 | 2.71 | 2.06 | 1.54 | 0.90 | 0.51 | 20.06 |
| Highest Precipitation (in.) | 2.48 | 2.05 | 2.33 | 4.82 | 5.62 | 6.91 | 8.02 | 5.69 | 4.28 | 5.06 | 3.19 | 1.48 | 8.02 |
| Year Highest Occurred | 1982 | 1987 | 1971 | 1979 | 1974 | 2000 | 1997 | 1980 | 1973 | 1985 | 1977 | 1985 | 1997 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.05 | 0.00 | 0.55 | 1.16 | 0.45 | 0.43 | 0.16 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1973 | 1989 | 1986 | 1988 | 1984 | 1988 | 1985 | 1996 | 1993 | 1999 | 1999 | 1979 | 1973 |
| Heating Degree Days (F) | 1941. | 1551. | 1327. | 772. | 365. | 136. | 57. | 105. | 324. | 723. | 1249. | 1754. | 10304. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 22. | 68. | 113. | 116. | 14. | 0. | 0. | 0. | 334. |