| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 22.3 | 29.3 | 41.4 | 57.3 | 70.7 | 79.7 | 83.2 | 80.6 | 72.6 | 60.1 | 40.5 | 26.4 | 55.3 |
| Highest Mean Max. Temperature (F) | 37.9 | 43.0 | 52.5 | 67.2 | 78.7 | 86.5 | 89.6 | 88.0 | 79.5 | 66.6 | 54.2 | 36.0 | 89.6 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1988 | 1988 | 1974 | 1983 | 1978 | 1973 | 1999 | 1979 | 1974 |
| Lowest Mean Max. Temperature (F) | 7.9 | 16.6 | 31.7 | 46.5 | 62.5 | 73.5 | 72.9 | 74.5 | 65.2 | 55.5 | 30.3 | 9.6 | 7.9 |
| Year Lowest Occurred | 1979 | 1979 | 1984 | 1975 | 1996 | 1993 | 1992 | 1992 | 1993 | 1976 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 13.6 | 20.8 | 32.5 | 46.5 | 59.3 | 68.5 | 72.4 | 70.2 | 61.6 | 49.6 | 32.5 | 18.7 | 45.5 |
| Highest Mean Temperature (F) | 28.0 | 32.8 | 40.5 | 54.1 | 66.4 | 74.0 | 77.5 | 75.8 | 68.1 | 56.0 | 42.4 | 27.0 | 77.5 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1977 | 1977 | 1988 | 1974 | 1983 | 1978 | 1973 | 1999 | 1979 | 1974 |
| Lowest Mean Temperature (F) | 0.3 | 7.3 | 23.6 | 39.1 | 53.2 | 63.0 | 64.9 | 64.6 | 55.8 | 44.9 | 23.0 | 2.1 | 0.3 |
| Year Lowest Occurred | 1979 | 1979 | 1975 | 1975 | 1997 | 1982 | 1992 | 1992 | 1993 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 4.9 | 12.2 | 23.5 | 35.6 | 47.8 | 57.3 | 61.5 | 59.7 | 50.6 | 39.0 | 24.4 | 11.0 | 35.6 |
| Highest Mean Min. Temperature (F) | 18.0 | 24.6 | 32.7 | 42.5 | 54.5 | 63.1 | 65.5 | 65.3 | 56.7 | 45.5 | 31.3 | 20.7 | 65.5 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1991 | 1999 | 1995 | 1978 | 1973 | 1981 | 1997 | 1999 |
| Lowest Mean Min. Temperature (F) | -7.4 | -2.0 | 14.6 | 31.0 | 40.8 | 51.3 | 56.8 | 54.6 | 46.3 | 33.6 | 15.6 | -5.4 | -7.4 |
| Year Lowest Occurred | 1979 | 1979 | 1975 | 1996 | 1997 | 1982 | 1992 | 1992 | 1993 | 1988 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.60 | 0.60 | 1.91 | 3.05 | 3.85 | 4.67 | 3.61 | 3.83 | 2.79 | 2.06 | 1.79 | 0.79 | 29.55 |
| Highest Precipitation (in.) | 1.73 | 2.86 | 4.43 | 6.96 | 9.61 | 11.43 | 10.55 | 8.93 | 7.69 | 5.35 | 4.21 | 3.00 | 11.43 |
| Year Highest Occurred | 1996 | 1971 | 1987 | 1991 | 1982 | 1993 | 1987 | 1979 | 1977 | 1971 | 1996 | 1982 | 1993 |
| Lowest Precipitation (in.) | 0.06 | 0.02 | 0.10 | 0.43 | 1.63 | 1.77 | 0.21 | 0.41 | 0.53 | 0.00 | 0.17 | 0.05 | 0.00 |
| Year Lowest Occurred | 1995 | 1986 | 1994 | 1987 | 1994 | 1988 | 1975 | 1976 | 1999 | 1989 | 1976 | 1988 | 1989 |
| Heating Degree Days (F) | 1593. | 1239. | 1009. | 561. | 229. | 39. | 14. | 26. | 151. | 480. | 978. | 1434. | 7753. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 4. | 51. | 144. | 242. | 186. | 49. | 1. | 0. | 0. | 677. |