| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 27.3 | 35.1 | 44.8 | 58.1 | 69.9 | 78.7 | 86.2 | 86.1 | 74.4 | 61.3 | 42.3 | 30.9 | 57.9 |
| Highest Mean Max. Temperature (F) | 42.5 | 47.7 | 55.2 | 68.3 | 77.9 | 93.0 | 91.2 | 93.6 | 83.7 | 68.0 | 54.3 | 44.6 | 93.6 |
| Year Highest Occurred | 1992 | 1992 | 1986 | 1987 | 1977 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1979 | 1983 |
| Lowest Mean Max. Temperature (F) | 11.7 | 18.9 | 34.0 | 44.7 | 61.3 | 69.2 | 74.0 | 77.6 | 62.7 | 55.9 | 26.4 | 11.3 | 11.3 |
| Year Lowest Occurred | 1979 | 1989 | 1998 | 1975 | 1996 | 1998 | 1993 | 1987 | 1986 | 1984 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 15.6 | 23.2 | 32.4 | 44.3 | 55.8 | 64.7 | 70.9 | 70.0 | 58.3 | 46.6 | 30.5 | 19.4 | 44.3 |
| Highest Mean Temperature (F) | 29.2 | 33.9 | 42.0 | 51.6 | 62.7 | 77.3 | 75.9 | 77.1 | 65.6 | 50.8 | 40.1 | 28.8 | 77.3 |
| Year Highest Occurred | 1992 | 1992 | 1986 | 1987 | 1977 | 1988 | 1989 | 1983 | 1998 | 1973 | 1999 | 1979 | 1988 |
| Lowest Mean Temperature (F) | 0.7 | 7.7 | 21.9 | 36.1 | 50.8 | 54.9 | 63.4 | 63.0 | 52.6 | 42.4 | 16.8 | 1.2 | 0.7 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1975 | 1996 | 1998 | 1993 | 1977 | 1984 | 1976 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | 3.9 | 11.3 | 20.0 | 30.5 | 41.7 | 50.6 | 55.6 | 53.8 | 42.2 | 31.8 | 18.7 | 7.8 | 30.7 |
| Highest Mean Min. Temperature (F) | 18.7 | 23.1 | 28.8 | 35.0 | 47.5 | 61.6 | 61.0 | 60.6 | 47.4 | 36.7 | 27.2 | 17.7 | 61.6 |
| Year Highest Occurred | 1983 | 1998 | 1986 | 1987 | 1977 | 1988 | 1989 | 1983 | 1998 | 1994 | 1998 | 1993 | 1988 |
| Lowest Mean Min. Temperature (F) | -13.1 | -6.0 | 8.5 | 26.5 | 37.3 | 40.6 | 50.0 | 46.4 | 36.8 | 26.9 | 7.1 | -8.9 | -13.1 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1983 | 1984 | 1998 | 1971 | 1974 | 1974 | 1976 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.35 | 0.36 | 0.64 | 1.35 | 2.26 | 2.89 | 2.16 | 1.38 | 1.45 | 1.12 | 0.58 | 0.37 | 14.91 |
| Highest Precipitation (in.) | 1.09 | 1.39 | 2.09 | 2.90 | 6.84 | 8.51 | 7.54 | 4.08 | 6.05 | 4.48 | 3.29 | 1.38 | 8.51 |
| Year Highest Occurred | 1971 | 1998 | 1982 | 1989 | 1974 | 1971 | 1987 | 1987 | 1986 | 1982 | 2000 | 1972 | 1971 |
| Lowest Precipitation (in.) | 0.02 | 0.01 | 0.03 | 0.00 | 0.10 | 0.40 | 0.39 | 0.05 | 0.03 | 0.09 | 0.04 | 0.00 | 0.00 |
| Year Lowest Occurred | 2000 | 1985 | 1981 | 1988 | 1984 | 1985 | 1989 | 1971 | 1995 | 1973 | 1997 | 1987 | 1988 |
| Heating Degree Days (F) | 1532. | 1170. | 1010. | 621. | 308. | 125. | 29. | 60. | 242. | 572. | 1035. | 1414. | 8118. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 23. | 115. | 212. | 213. | 41. | 0. | 0. | 0. | 604. |