| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 16.9 | 24.4 | 36.1 | 51.3 | 65.9 | 74.0 | 78.4 | 76.1 | 66.5 | 54.1 | 36.0 | 21.6 | 50.1 |
| Highest Mean Max. Temperature (F) | 29.6 | 36.5 | 45.5 | 62.7 | 75.6 | 82.1 | 85.4 | 81.6 | 73.7 | 61.8 | 47.0 | 29.9 | 85.4 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1988 | 1976 | 1998 | 1973 | 1999 | 1997 | 1988 |
| Lowest Mean Max. Temperature (F) | 6.1 | 13.1 | 28.8 | 42.4 | 56.8 | 67.6 | 69.2 | 70.2 | 59.4 | 49.2 | 26.6 | 7.0 | 6.1 |
| Year Lowest Occurred | 1977 | 1989 | 1996 | 1995 | 1997 | 1993 | 1992 | 1992 | 1993 | 1987 | 1985 | 1983 | 1977 |
| Mean Temperature (F) | 6.7 | 13.4 | 25.9 | 40.5 | 54.2 | 63.0 | 68.0 | 66.1 | 56.8 | 45.0 | 29.1 | 13.3 | 40.2 |
| Highest Mean Temperature (F) | 20.3 | 28.2 | 35.2 | 48.4 | 61.7 | 67.5 | 72.8 | 71.7 | 61.6 | 52.1 | 37.5 | 24.0 | 72.8 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1997 | 1988 |
| Lowest Mean Temperature (F) | -5.5 | 0.7 | 16.9 | 33.6 | 47.4 | 57.5 | 60.6 | 61.6 | 51.4 | 39.1 | 20.2 | -2.4 | -5.5 |
| Year Lowest Occurred | 1977 | 1989 | 1996 | 1975 | 1979 | 1982 | 1992 | 1977 | 1984 | 1976 | 1985 | 1983 | 1977 |
| Mean Min. Temperature (F) | -3.5 | 2.3 | 15.7 | 29.6 | 42.5 | 52.0 | 57.6 | 56.0 | 47.1 | 35.8 | 22.1 | 4.9 | 30.2 |
| Highest Mean Min. Temperature (F) | 10.9 | 21.1 | 26.8 | 35.2 | 47.9 | 57.0 | 62.5 | 61.8 | 51.5 | 42.5 | 28.0 | 18.1 | 62.5 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1991 | 1995 | 1983 | 1983 | 1997 | 1973 | 1999 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -17.1 | -11.7 | 4.7 | 22.6 | 36.5 | 46.5 | 51.9 | 50.2 | 40.1 | 26.9 | 12.2 | -11.8 | -17.1 |
| Year Lowest Occurred | 1977 | 1989 | 1975 | 2000 | 1971 | 1982 | 1992 | 1977 | 1974 | 1976 | 1976 | 1983 | 1977 |
| Mean Precipitation (in.) | 0.66 | 0.47 | 1.22 | 1.90 | 2.95 | 4.31 | 4.96 | 3.75 | 2.85 | 2.27 | 1.53 | 0.74 | 27.61 |
| Highest Precipitation (in.) | 1.82 | 1.76 | 3.45 | 5.24 | 5.36 | 9.58 | 22.70 | 7.08 | 5.78 | 8.03 | 4.13 | 3.58 | 22.70 |
| Year Highest Occurred | 1999 | 1971 | 1979 | 1985 | 1991 | 1976 | 1972 | 1995 | 1985 | 1971 | 1983 | 1984 | 1972 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.16 | 0.92 | 0.79 | 0.41 | 1.00 | 0.64 | 0.10 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1996 | 1998 | 1997 | 1980 | 1992 | 1995 | 1989 | 1984 | 1976 | 1978 | 1995 | 1995 | 1996 |
| Heating Degree Days (F) | 1810. | 1446. | 1213. | 736. | 357. | 112. | 51. | 67. | 257. | 622. | 1080. | 1604. | 9355. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 22. | 53. | 143. | 100. | 11. | 0. | 0. | 0. | 329. |