| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 13.9 | 21.3 | 33.0 | 51.6 | 67.7 | 75.7 | 80.1 | 79.1 | 68.5 | 54.7 | 33.9 | 19.7 | 49.9 |
| Highest Mean Max. Temperature (F) | 28.1 | 33.5 | 44.5 | 62.7 | 78.9 | 84.7 | 84.9 | 86.8 | 77.1 | 61.4 | 48.3 | 31.3 | 86.8 |
| Year Highest Occurred | 1990 | 2000 | 2000 | 1980 | 1977 | 1988 | 1974 | 1983 | 1998 | 1973 | 1999 | 1999 | 1983 |
| Lowest Mean Max. Temperature (F) | 0.7 | 4.4 | 22.8 | 39.5 | 58.3 | 69.2 | 70.6 | 72.5 | 62.2 | 48.3 | 22.6 | 6.7 | 0.7 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1979 | 1979 | 1993 | 1992 | 1985 | 1985 | 1991 | 1996 | 1983 | 1982 |
| Mean Temperature (F) | 4.9 | 11.9 | 23.6 | 39.8 | 55.0 | 64.0 | 68.3 | 66.3 | 55.4 | 43.1 | 25.3 | 10.5 | 39.0 |
| Highest Mean Temperature (F) | 18.5 | 25.6 | 34.7 | 48.4 | 64.7 | 71.2 | 72.3 | 72.8 | 62.2 | 49.2 | 38.3 | 24.7 | 72.8 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1988 | 1975 | 1983 | 1998 | 1973 | 1981 | 1997 | 1983 |
| Lowest Mean Temperature (F) | -9.2 | -4.8 | 14.0 | 30.3 | 47.0 | 57.6 | 60.6 | 59.6 | 50.8 | 37.6 | 13.3 | -2.3 | -9.2 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1979 | 1979 | 1985 | 1992 | 1977 | 1993 | 1991 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -4.1 | 2.4 | 14.2 | 27.9 | 42.3 | 52.2 | 56.5 | 53.5 | 42.3 | 31.5 | 16.7 | 1.3 | 28.1 |
| Highest Mean Min. Temperature (F) | 10.6 | 20.3 | 24.9 | 34.2 | 50.5 | 57.9 | 60.7 | 60.1 | 49.0 | 37.0 | 30.4 | 18.4 | 60.7 |
| Year Highest Occurred | 1972 | 1998 | 2000 | 1987 | 1977 | 1995 | 1983 | 1973 | 1978 | 1994 | 1981 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -19.2 | -14.0 | 3.7 | 21.1 | 35.7 | 45.7 | 50.1 | 45.5 | 36.6 | 25.6 | 2.9 | -11.3 | -19.2 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1979 | 1979 | 1985 | 1971 | 1977 | 1974 | 1988 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.53 | 0.53 | 0.97 | 1.25 | 2.24 | 3.57 | 3.45 | 2.91 | 2.05 | 1.55 | 0.91 | 0.45 | 20.41 |
| Highest Precipitation (in.) | 1.55 | 1.38 | 1.79 | 4.00 | 6.40 | 10.27 | 7.85 | 6.73 | 5.18 | 5.02 | 2.77 | 1.62 | 10.27 |
| Year Highest Occurred | 1994 | 1974 | 1973 | 1986 | 1999 | 2000 | 1993 | 1974 | 1973 | 1998 | 2000 | 1995 | 2000 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.19 | 0.89 | 0.65 | 0.34 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1981 | 1997 | 1998 | 1980 | 1980 | 1988 | 1973 | 1996 | 1979 | 1999 | 1999 | 2000 | 1981 |
| Heating Degree Days (F) | 1865. | 1488. | 1283. | 759. | 337. | 115. | 45. | 90. | 306. | 680. | 1191. | 1690. | 9849. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 27. | 82. | 146. | 131. | 19. | 0. | 0. | 0. | 406. |