| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 21.3 | 28.4 | 39.8 | 57.2 | 70.5 | 78.9 | 84.9 | 83.9 | 73.5 | 59.4 | 38.4 | 25.4 | 55.1 |
| Highest Mean Max. Temperature (F) | 34.7 | 38.7 | 50.1 | 67.7 | 78.0 | 90.6 | 91.4 | 91.2 | 81.2 | 64.3 | 53.3 | 39.1 | 91.4 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1985 | 1988 | 1988 | 1973 | 1978 | 1974 | 1999 | 1979 | 1988 |
| Lowest Mean Max. Temperature (F) | 7.3 | 11.5 | 31.4 | 43.8 | 63.3 | 72.6 | 74.2 | 76.6 | 64.6 | 55.6 | 24.9 | 8.4 | 7.3 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1975 | 1996 | 1993 | 1992 | 1992 | 1985 | 1995 | 1985 | 1983 | 1982 |
| Mean Temperature (F) | 11.4 | 18.7 | 29.9 | 44.7 | 57.3 | 66.1 | 71.6 | 70.1 | 59.7 | 46.8 | 28.9 | 16.1 | 43.4 |
| Highest Mean Temperature (F) | 25.2 | 30.2 | 37.3 | 52.2 | 64.3 | 74.7 | 76.3 | 76.0 | 65.5 | 51.5 | 40.4 | 27.0 | 76.3 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1997 | 1988 |
| Lowest Mean Temperature (F) | -3.3 | 1.9 | 21.9 | 36.6 | 51.5 | 61.1 | 63.8 | 64.1 | 53.9 | 41.5 | 15.1 | 1.1 | -3.3 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1975 | 1979 | 1982 | 1992 | 1992 | 1985 | 1976 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | 1.5 | 9.0 | 19.9 | 32.1 | 44.0 | 53.2 | 58.2 | 56.3 | 45.8 | 34.1 | 19.4 | 6.7 | 31.7 |
| Highest Mean Min. Temperature (F) | 15.7 | 23.0 | 28.0 | 36.7 | 50.6 | 58.8 | 61.7 | 61.5 | 51.0 | 38.9 | 27.5 | 19.5 | 61.7 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1998 | 1977 | 1988 | 1987 | 1983 | 1998 | 1973 | 1999 | 1997 | 1987 |
| Lowest Mean Min. Temperature (F) | -14.0 | -7.7 | 11.9 | 27.3 | 38.1 | 47.6 | 52.9 | 51.1 | 41.3 | 27.3 | 5.3 | -6.2 | -14.0 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1996 | 1983 | 1985 | 1971 | 1985 | 1984 | 1976 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.53 | 0.53 | 1.37 | 1.95 | 2.73 | 3.16 | 2.71 | 2.11 | 1.70 | 1.45 | 0.88 | 0.39 | 19.51 |
| Highest Precipitation (in.) | 1.67 | 1.69 | 3.72 | 6.66 | 5.86 | 7.08 | 9.16 | 6.46 | 7.04 | 6.20 | 2.65 | 1.15 | 9.16 |
| Year Highest Occurred | 1997 | 1987 | 1977 | 1986 | 1995 | 1975 | 1993 | 1998 | 1996 | 1998 | 1977 | 1988 | 1993 |
| Lowest Precipitation (in.) | 0.00 | 0.01 | 0.07 | 0.03 | 0.47 | 0.20 | 0.12 | 0.27 | 0.01 | 0.11 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1974 | 1985 | 1971 | 1987 | 1976 | 1974 | 1975 | 1984 | 1972 | 1987 | 1980 | 1986 | 1974 |
| Heating Degree Days (F) | 1661. | 1296. | 1089. | 613. | 266. | 78. | 24. | 38. | 199. | 567. | 1084. | 1518. | 8433. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 26. | 111. | 227. | 195. | 38. | 0. | 0. | 0. | 599. |