| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 13.8 | 22.0 | 34.6 | 51.4 | 65.5 | 73.4 | 77.3 | 75.4 | 64.7 | 52.4 | 32.7 | 18.1 | 48.4 |
| Highest Mean Max. Temperature (F) | 25.7 | 33.6 | 42.8 | 65.5 | 75.7 | 82.2 | 82.5 | 82.0 | 72.7 | 58.3 | 43.3 | 28.1 | 82.5 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1988 | 1983 | 1998 | 1973 | 1981 | 1999 | 1988 |
| Lowest Mean Max. Temperature (F) | 2.7 | 12.1 | 24.5 | 42.5 | 55.6 | 64.6 | 68.4 | 69.2 | 58.9 | 47.7 | 24.1 | 4.4 | 2.7 |
| Year Lowest Occurred | 1982 | 1989 | 1996 | 1996 | 1979 | 2000 | 1992 | 1985 | 1993 | 1991 | 1985 | 1983 | 1982 |
| Mean Temperature (F) | 2.9 | 10.9 | 23.8 | 40.1 | 53.7 | 62.2 | 66.5 | 64.1 | 54.2 | 42.6 | 25.1 | 9.1 | 37.9 |
| Highest Mean Temperature (F) | 16.4 | 26.6 | 34.3 | 50.0 | 64.4 | 68.4 | 70.6 | 69.8 | 59.7 | 49.5 | 35.3 | 20.8 | 70.6 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1988 | 1989 | 1983 | 1998 | 1973 | 1981 | 1997 | 1989 |
| Lowest Mean Temperature (F) | -10.5 | -2.0 | 13.0 | 31.8 | 45.6 | 56.4 | 59.2 | 57.9 | 49.4 | 37.4 | 15.4 | -4.7 | -10.5 |
| Year Lowest Occurred | 1982 | 1989 | 1996 | 1996 | 1979 | 1982 | 1992 | 1977 | 1993 | 1976 | 1985 | 2000 | 1982 |
| Mean Min. Temperature (F) | -8.0 | -0.3 | 13.0 | 28.7 | 41.8 | 51.0 | 55.7 | 52.8 | 43.6 | 32.8 | 17.4 | 0.0 | 27.4 |
| Highest Mean Min. Temperature (F) | 7.0 | 20.3 | 25.8 | 36.9 | 53.0 | 56.2 | 59.7 | 57.5 | 48.8 | 40.6 | 27.4 | 14.4 | 59.7 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1995 | 1983 | 1983 | 1978 | 1973 | 1981 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -23.7 | -16.1 | 1.4 | 21.0 | 35.6 | 44.9 | 49.7 | 46.3 | 38.6 | 26.7 | 6.6 | -15.9 | -23.7 |
| Year Lowest Occurred | 1982 | 1989 | 1996 | 1996 | 1979 | 1982 | 1971 | 1977 | 1974 | 1976 | 1985 | 2000 | 1982 |
| Mean Precipitation (in.) | 0.72 | 0.54 | 1.07 | 1.59 | 2.84 | 4.09 | 4.22 | 3.71 | 3.10 | 2.53 | 1.28 | 0.69 | 26.38 |
| Highest Precipitation (in.) | 2.00 | 1.19 | 2.26 | 3.14 | 7.18 | 8.11 | 9.02 | 7.72 | 9.87 | 8.15 | 3.15 | 1.90 | 9.87 |
| Year Highest Occurred | 1975 | 1984 | 1999 | 1986 | 1999 | 1990 | 1995 | 1983 | 1973 | 1971 | 1977 | 1996 | 1973 |
| Lowest Precipitation (in.) | 0.00 | 0.05 | 0.28 | 0.00 | 0.40 | 0.75 | 1.59 | 0.95 | 0.59 | 0.33 | 0.00 | 0.11 | 0.00 |
| Year Lowest Occurred | 1973 | 1993 | 1986 | 1988 | 1976 | 1987 | 1990 | 1971 | 1976 | 1992 | 1999 | 1976 | 1973 |
| Heating Degree Days (F) | 1926. | 1517. | 1278. | 749. | 377. | 141. | 65. | 112. | 331. | 695. | 1198. | 1737. | 10126. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 24. | 58. | 111. | 84. | 5. | 0. | 0. | 0. | 283. |