| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 13.1 | 20.1 | 32.2 | 51.8 | 68.8 | 75.8 | 79.3 | 79.4 | 68.6 | 55.1 | 32.9 | 18.0 | 49.6 |
| Highest Mean Max. Temperature (F) | 26.7 | 31.3 | 44.0 | 63.8 | 79.3 | 86.0 | 84.8 | 88.0 | 76.1 | 60.9 | 46.5 | 30.6 | 88.0 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1988 | 1983 | 1983 | 1976 | 1973 | 1999 | 1999 | 1983 |
| Lowest Mean Max. Temperature (F) | -0.7 | 4.1 | 22.4 | 36.1 | 57.3 | 69.9 | 70.5 | 72.1 | 63.4 | 49.3 | 21.3 | 3.5 | -0.7 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1979 | 1979 | 1985 | 1992 | 1977 | 1984 | 1991 | 1996 | 1983 | 1982 |
| Mean Temperature (F) | 2.6 | 9.7 | 22.0 | 39.5 | 54.6 | 62.6 | 66.2 | 65.0 | 55.0 | 43.0 | 23.5 | 8.0 | 37.6 |
| Highest Mean Temperature (F) | 16.0 | 24.6 | 33.7 | 48.8 | 64.5 | 71.2 | 70.5 | 72.0 | 60.8 | 48.6 | 34.8 | 22.3 | 72.0 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1988 | 1989 | 1983 | 1998 | 1973 | 1999 | 1997 | 1983 |
| Lowest Mean Temperature (F) | -11.3 | -6.1 | 11.3 | 27.2 | 46.1 | 56.6 | 59.0 | 58.0 | 49.4 | 37.4 | 11.6 | -8.2 | -11.3 |
| Year Lowest Occurred | 1982 | 1979 | 1974 | 1979 | 1979 | 1985 | 1992 | 1977 | 1974 | 1976 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -7.9 | -0.8 | 11.7 | 27.2 | 40.4 | 49.4 | 53.0 | 50.6 | 41.4 | 30.9 | 14.1 | -2.0 | 25.7 |
| Highest Mean Min. Temperature (F) | 5.2 | 17.9 | 25.0 | 33.8 | 49.7 | 56.4 | 56.7 | 56.3 | 46.8 | 37.6 | 23.9 | 14.7 | 56.7 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1998 | 1977 | 1988 | 1999 | 1984 | 1998 | 1994 | 1981 | 1997 | 1999 |
| Lowest Mean Min. Temperature (F) | -22.0 | -16.4 | -1.2 | 18.3 | 32.5 | 43.3 | 47.4 | 43.8 | 34.7 | 22.3 | 1.3 | -19.9 | -22.0 |
| Year Lowest Occurred | 1982 | 1979 | 1974 | 1979 | 1983 | 1985 | 1992 | 1977 | 1974 | 1976 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.34 | 0.24 | 0.38 | 0.99 | 2.04 | 3.05 | 2.75 | 3.12 | 2.24 | 1.31 | 0.57 | 0.34 | 17.37 |
| Highest Precipitation (in.) | 0.90 | 0.96 | 1.83 | 2.60 | 7.65 | 5.74 | 6.51 | 5.54 | 4.56 | 3.87 | 1.71 | 0.73 | 7.65 |
| Year Highest Occurred | 1980 | 1976 | 1971 | 1971 | 1974 | 1985 | 1993 | 1981 | 1973 | 1998 | 2000 | 1982 | 1974 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 1.11 | 0.65 | 0.50 | 0.49 | 0.14 | 0.02 | 0.00 | 0.00 |
| Year Lowest Occurred | 1985 | 1985 | 1985 | 1980 | 1976 | 1974 | 1976 | 1984 | 1974 | 1992 | 1976 | 1984 | 1985 |
| Heating Degree Days (F) | 1937. | 1551. | 1336. | 766. | 353. | 140. | 66. | 118. | 311. | 682. | 1245. | 1769. | 10274. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 30. | 69. | 102. | 118. | 11. | 0. | 0. | 0. | 332. |