| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 25.8 | 29.8 | 41.1 | 51.9 | 62.9 | 74.2 | 79.6 | 78.1 | 70.3 | 58.7 | 40.0 | 28.2 | 53.4 |
| Highest Mean Max. Temperature (F) | 37.6 | 39.2 | 49.4 | 59.3 | 67.9 | 79.8 | 84.0 | 81.7 | 76.1 | 64.9 | 50.8 | 40.4 | 84.0 |
| Year Highest Occurred | 1981 | 1981 | 1999 | 1987 | 1994 | 1994 | 1988 | 1995 | 1998 | 1988 | 1999 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 10.1 | 20.2 | 33.0 | 43.6 | 55.6 | 69.0 | 76.0 | 75.6 | 64.9 | 50.5 | 30.4 | 17.6 | 10.1 |
| Year Lowest Occurred | 1984 | 1984 | 1980 | 1983 | 1995 | 1983 | 1995 | 1997 | 1986 | 1984 | 1992 | 1978 | 1984 |
| Mean Temperature (F) | 11.8 | 15.5 | 28.7 | 38.1 | 47.6 | 56.4 | 61.8 | 60.3 | 52.1 | 41.1 | 26.6 | 14.6 | 37.9 |
| Highest Mean Temperature (F) | 21.0 | 25.6 | 34.5 | 43.0 | 50.8 | 61.4 | 64.4 | 63.5 | 56.6 | 45.6 | 33.0 | 26.4 | 64.4 |
| Year Highest Occurred | 2000 | 1995 | 1999 | 1992 | 1992 | 1988 | 1998 | 1983 | 1998 | 1987 | 1995 | 1980 | 1998 |
| Lowest Mean Temperature (F) | -2.6 | 5.3 | 20.9 | 31.7 | 43.7 | 52.5 | 58.8 | 57.3 | 47.6 | 36.2 | 18.4 | 4.8 | -2.6 |
| Year Lowest Occurred | 1984 | 1974 | 1980 | 1983 | 1983 | 1982 | 1993 | 1975 | 1971 | 1976 | 1979 | 1978 | 1984 |
| Mean Min. Temperature (F) | -2.2 | 1.1 | 16.3 | 24.2 | 32.2 | 38.6 | 44.0 | 42.4 | 33.9 | 23.4 | 13.2 | 0.9 | 22.3 |
| Highest Mean Min. Temperature (F) | 9.6 | 13.2 | 22.0 | 28.1 | 34.8 | 43.1 | 48.1 | 47.3 | 39.2 | 29.5 | 19.9 | 12.4 | 48.1 |
| Year Highest Occurred | 2000 | 1986 | 1992 | 1986 | 1985 | 1988 | 1984 | 1983 | 1997 | 1972 | 1998 | 1980 | 1984 |
| Lowest Mean Min. Temperature (F) | -17.4 | -12.6 | 8.9 | 19.8 | 29.5 | 34.4 | 39.2 | 37.6 | 29.3 | 16.5 | 4.1 | -8.4 | -17.4 |
| Year Lowest Occurred | 1973 | 1985 | 1980 | 1983 | 1972 | 1982 | 1993 | 1975 | 1975 | 1976 | 1979 | 1974 | 1973 |
| Mean Precipitation (in.) | 0.72 | 0.53 | 0.68 | 0.86 | 1.43 | 0.96 | 1.38 | 1.42 | 1.19 | 0.83 | 0.82 | 0.66 | 11.48 |
| Highest Precipitation (in.) | 1.86 | 2.24 | 1.57 | 1.83 | 3.61 | 2.01 | 4.06 | 3.30 | 3.21 | 2.55 | 4.01 | 3.38 | 4.06 |
| Year Highest Occurred | 1980 | 1986 | 1993 | 1995 | 1995 | 1979 | 1973 | 1984 | 1997 | 1985 | 1985 | 1983 | 1973 |
| Lowest Precipitation (in.) | 0.09 | 0.00 | 0.00 | 0.00 | 0.25 | 0.00 | 0.20 | 0.50 | 0.05 | 0.00 | 0.00 | 0.07 | 0.00 |
| Year Lowest Occurred | 1981 | 1988 | 1988 | 1987 | 1974 | 1987 | 1994 | 1995 | 1979 | 1976 | 1987 | 1997 | 1988 |
| Heating Degree Days (F) | 1650. | 1388. | 1125. | 808. | 541. | 264. | 115. | 157. | 388. | 741. | 1153. | 1563. | 9893. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 6. | 15. | 8. | 0. | 0. | 0. | 0. | 29. |