| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 16.3 | 23.5 | 35.4 | 53.2 | 68.1 | 75.8 | 80.8 | 79.9 | 69.5 | 56.5 | 35.6 | 21.6 | 51.4 |
| Highest Mean Max. Temperature (F) | 32.5 | 34.7 | 46.2 | 64.5 | 76.4 | 86.0 | 86.9 | 85.6 | 78.4 | 62.0 | 51.0 | 35.5 | 86.9 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1988 | 1983 | 1998 | 1989 | 1999 | 1999 | 1988 |
| Lowest Mean Max. Temperature (F) | 1.6 | 6.5 | 25.8 | 38.3 | 58.3 | 69.1 | 73.3 | 72.4 | 62.0 | 52.7 | 24.7 | 6.4 | 1.6 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1975 | 1979 | 1985 | 1992 | 1977 | 1985 | 1983 | 1996 | 1983 | 1982 |
| Mean Temperature (F) | 5.7 | 12.9 | 25.5 | 41.0 | 55.1 | 63.8 | 68.5 | 66.6 | 56.1 | 43.7 | 26.0 | 11.9 | 39.7 |
| Highest Mean Temperature (F) | 22.2 | 26.4 | 34.4 | 48.3 | 64.0 | 71.1 | 73.0 | 71.5 | 62.4 | 49.4 | 36.6 | 24.0 | 73.0 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1989 | 1983 | 1998 | 1973 | 1999 | 1997 | 1989 |
| Lowest Mean Temperature (F) | -9.2 | -3.7 | 16.1 | 31.0 | 47.7 | 57.3 | 62.4 | 59.4 | 51.5 | 36.4 | 13.5 | -2.2 | -9.2 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1975 | 1979 | 1982 | 1992 | 1977 | 1984 | 1976 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -4.9 | 2.3 | 15.6 | 28.8 | 42.1 | 51.7 | 56.2 | 53.3 | 42.6 | 30.9 | 16.3 | 2.2 | 28.1 |
| Highest Mean Min. Temperature (F) | 11.9 | 18.9 | 26.8 | 33.7 | 51.6 | 57.2 | 59.9 | 57.3 | 48.3 | 38.3 | 24.7 | 16.1 | 59.9 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1991 | 1975 | 1983 | 1978 | 1973 | 1981 | 1997 | 1975 |
| Lowest Mean Min. Temperature (F) | -20.1 | -13.8 | 6.4 | 22.9 | 36.6 | 44.8 | 51.3 | 46.4 | 37.5 | 19.9 | 1.8 | -10.8 | -20.1 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1997 | 1983 | 1982 | 1971 | 1977 | 1974 | 1976 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.54 | 0.46 | 0.80 | 1.22 | 2.60 | 3.27 | 2.75 | 2.43 | 2.10 | 1.53 | 0.80 | 0.39 | 18.89 |
| Highest Precipitation (in.) | 1.37 | 1.51 | 1.94 | 5.60 | 4.64 | 6.98 | 8.77 | 6.30 | 5.06 | 5.43 | 2.18 | 0.89 | 8.77 |
| Year Highest Occurred | 1988 | 1998 | 1977 | 1986 | 1991 | 1993 | 1993 | 1980 | 1996 | 1982 | 2000 | 1993 | 1993 |
| Lowest Precipitation (in.) | 0.04 | 0.05 | 0.00 | 0.06 | 0.60 | 0.52 | 0.31 | 0.36 | 0.17 | 0.12 | 0.00 | 0.09 | 0.00 |
| Year Lowest Occurred | 1990 | 1973 | 1986 | 1980 | 1976 | 1973 | 1976 | 1984 | 1976 | 1989 | 1999 | 1999 | 1986 |
| Heating Degree Days (F) | 1840. | 1459. | 1225. | 720. | 330. | 114. | 35. | 74. | 285. | 661. | 1172. | 1646. | 9561. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 23. | 77. | 143. | 123. | 16. | 0. | 0. | 0. | 383. |