| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | -0.3 | 8.0 | 25.0 | 43.6 | 60.6 | 70.9 | 73.0 | 66.3 | 54.3 | 31.4 | 11.2 | 3.3 | 37.3 |
| Highest Mean Max. Temperature (F) | 28.7 | 27.5 | 38.7 | 53.4 | 67.6 | 75.4 | 78.4 | 73.2 | 63.5 | 41.0 | 27.7 | 17.2 | 78.4 |
| Year Highest Occurred | 1981 | 1980 | 1981 | 1993 | 1995 | 1997 | 1993 | 1977 | 1995 | 1979 | 1979 | 1985 | 1993 |
| Lowest Mean Max. Temperature (F) | -22.7 | -12.9 | 10.5 | 31.7 | 52.0 | 63.6 | 64.1 | 59.3 | 40.9 | 21.7 | -0.5 | -17.9 | -22.7 |
| Year Lowest Occurred | 1971 | 1979 | 1971 | 1972 | 1992 | 1978 | 1981 | 2000 | 1992 | 1996 | 1989 | 1980 | 1971 |
| Mean Temperature (F) | -9.7 | -3.8 | 11.1 | 31.7 | 48.8 | 59.7 | 62.4 | 56.2 | 44.5 | 23.5 | 2.3 | -5.9 | 26.7 |
| Highest Mean Temperature (F) | 16.6 | 14.4 | 25.6 | 41.1 | 54.3 | 63.1 | 67.5 | 61.7 | 52.8 | 32.3 | 18.7 | 6.7 | 67.5 |
| Year Highest Occurred | 1981 | 1980 | 1981 | 1993 | 1990 | 1997 | 1975 | 1977 | 1995 | 1987 | 1979 | 1985 | 1975 |
| Lowest Mean Temperature (F) | -33.3 | -26.8 | -4.3 | 19.4 | 41.8 | 53.6 | 55.6 | 51.7 | 31.7 | 13.2 | -9.4 | -25.6 | -33.3 |
| Year Lowest Occurred | 1971 | 1979 | 1972 | 1972 | 1992 | 1978 | 1981 | 2000 | 1992 | 1996 | 1975 | 1980 | 1971 |
| Mean Min. Temperature (F) | -19.0 | -15.6 | -2.7 | 19.8 | 36.9 | 48.5 | 51.9 | 46.2 | 34.7 | 15.6 | -6.6 | -15.2 | 16.2 |
| Highest Mean Min. Temperature (F) | 4.4 | 1.9 | 12.4 | 28.8 | 41.9 | 52.1 | 57.2 | 50.2 | 42.0 | 24.5 | 9.7 | -2.9 | 57.2 |
| Year Highest Occurred | 1981 | 1997 | 1981 | 1993 | 1988 | 1975 | 1975 | 1977 | 1995 | 1987 | 1979 | 1986 | 1975 |
| Lowest Mean Min. Temperature (F) | -43.8 | -40.7 | -19.3 | 7.0 | 31.6 | 43.6 | 47.1 | 40.8 | 22.4 | 4.6 | -19.3 | -33.2 | -43.8 |
| Year Lowest Occurred | 1971 | 1979 | 1972 | 1972 | 1992 | 1978 | 1981 | 1981 | 1992 | 1996 | 1975 | 1980 | 1971 |
| Mean Precipitation (in.) | 0.56 | 0.36 | 0.28 | 0.21 | 0.60 | 1.40 | 1.73 | 1.74 | 1.12 | 0.92 | 0.68 | 0.74 | 10.34 |
| Highest Precipitation (in.) | 2.40 | 1.40 | 2.24 | 0.93 | 1.63 | 3.01 | 4.87 | 3.60 | 2.63 | 2.19 | 1.67 | 3.23 | 4.87 |
| Year Highest Occurred | 1993 | 1996 | 1991 | 1982 | 1977 | 1977 | 1990 | 1990 | 1993 | 1983 | 1994 | 1984 | 1990 |
| Lowest Precipitation (in.) | 0.08 | 0.00 | 0.00 | 0.00 | 0.07 | 0.31 | 0.35 | 0.41 | 0.19 | 0.27 | 0.08 | 0.06 | 0.00 |
| Year Lowest Occurred | 1998 | 2000 | 1998 | 2000 | 1997 | 1971 | 1993 | 1977 | 1979 | 1998 | 1983 | 1995 | 2000 |
| Heating Degree Days (F) | 2315. | 1926. | 1670. | 999. | 504. | 179. | 121. | 283. | 615. | 1287. | 1882. | 2199. | 13980. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 20. | 42. | 11. | 1. | 0. | 0. | 0. | 74. |