| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 11.5 | 19.3 | 31.7 | 51.5 | 67.9 | 75.6 | 79.7 | 79.1 | 67.9 | 53.5 | 32.5 | 17.5 | 49.0 |
| Highest Mean Max. Temperature (F) | 23.0 | 30.7 | 43.1 | 62.7 | 79.1 | 86.9 | 85.7 | 86.7 | 74.8 | 59.2 | 44.9 | 30.9 | 86.9 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1980 | 1977 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1997 | 1988 |
| Lowest Mean Max. Temperature (F) | -1.0 | 2.2 | 22.3 | 38.6 | 55.7 | 68.3 | 70.3 | 72.3 | 61.5 | 46.8 | 21.2 | 5.1 | -1.0 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1979 | 1979 | 1985 | 1992 | 1985 | 1985 | 1991 | 1996 | 1983 | 1982 |
| Mean Temperature (F) | 1.2 | 8.6 | 21.9 | 39.5 | 54.5 | 63.0 | 66.9 | 65.1 | 54.4 | 41.6 | 23.5 | 7.9 | 37.3 |
| Highest Mean Temperature (F) | 13.4 | 24.3 | 34.1 | 47.2 | 65.3 | 71.0 | 72.5 | 71.6 | 59.4 | 48.4 | 34.0 | 24.4 | 72.5 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1988 | 1974 | 1983 | 1998 | 1973 | 1999 | 1997 | 1974 |
| Lowest Mean Temperature (F) | -12.3 | -8.1 | 11.7 | 30.2 | 46.5 | 55.3 | 59.2 | 58.1 | 49.3 | 35.1 | 11.6 | -4.7 | -12.3 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1979 | 1979 | 1982 | 1992 | 1977 | 1984 | 1991 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -9.2 | -2.1 | 12.1 | 27.5 | 41.1 | 50.4 | 54.1 | 51.1 | 40.8 | 29.7 | 14.4 | -1.7 | 25.7 |
| Highest Mean Min. Temperature (F) | 3.8 | 17.8 | 25.6 | 33.5 | 51.4 | 56.3 | 59.4 | 56.4 | 45.5 | 37.7 | 24.0 | 17.9 | 59.4 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1998 | 1977 | 1995 | 1974 | 1983 | 1977 | 1973 | 1981 | 1997 | 1974 |
| Lowest Mean Min. Temperature (F) | -23.7 | -18.4 | 0.8 | 21.3 | 32.0 | 41.6 | 48.1 | 43.5 | 34.0 | 21.8 | 0.8 | -14.5 | -23.7 |
| Year Lowest Occurred | 1982 | 1979 | 1989 | 1996 | 1983 | 1982 | 1992 | 1977 | 1984 | 1988 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.44 | 0.40 | 0.72 | 0.99 | 2.09 | 3.41 | 2.95 | 2.68 | 2.12 | 1.48 | 0.85 | 0.45 | 18.58 |
| Highest Precipitation (in.) | 1.24 | 1.45 | 2.48 | 3.28 | 5.71 | 6.21 | 6.68 | 8.12 | 6.13 | 4.97 | 3.88 | 1.20 | 8.12 |
| Year Highest Occurred | 1971 | 1998 | 1971 | 1974 | 1977 | 1993 | 1993 | 2000 | 1991 | 1997 | 2000 | 1977 | 2000 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | 0.81 | 0.46 | 0.79 | 0.10 | 0.04 | 0.00 | 0.05 | 0.00 |
| Year Lowest Occurred | 1973 | 1982 | 1986 | 1988 | 1972 | 1988 | 1989 | 1987 | 1984 | 1990 | 1976 | 1981 | 1973 |
| Heating Degree Days (F) | 1982. | 1582. | 1337. | 766. | 355. | 136. | 61. | 104. | 328. | 726. | 1247. | 1773. | 10397. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 29. | 76. | 120. | 106. | 7. | 0. | 0. | 0. | 339. |