| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 34.0 | 39.8 | 48.8 | 56.7 | 66.0 | 74.7 | 77.6 | 75.7 | 70.0 | 61.1 | 45.8 | 35.8 | 57.2 |
| Highest Mean Max. Temperature (F) | 44.6 | 50.4 | 58.2 | 63.5 | 73.0 | 79.0 | 82.7 | 79.4 | 75.3 | 66.5 | 56.1 | 48.2 | 82.7 |
| Year Highest Occurred | 1981 | 1995 | 1972 | 1981 | 1984 | 1981 | 1980 | 1983 | 1998 | 1987 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 24.8 | 30.0 | 41.0 | 50.1 | 61.2 | 71.3 | 74.3 | 71.3 | 66.3 | 52.9 | 35.5 | 25.7 | 24.8 |
| Year Lowest Occurred | 1984 | 1992 | 1992 | 1983 | 1995 | 1995 | 1992 | 1976 | 1976 | 1984 | 1972 | 1991 | 1984 |
| Mean Temperature (F) | 19.4 | 25.2 | 34.1 | 41.1 | 50.5 | 58.5 | 62.8 | 61.4 | 54.4 | 45.2 | 31.2 | 21.3 | 42.1 |
| Highest Mean Temperature (F) | 28.2 | 35.2 | 40.1 | 46.1 | 55.8 | 62.2 | 66.0 | 64.7 | 58.3 | 49.0 | 37.5 | 32.0 | 66.0 |
| Year Highest Occurred | 1981 | 1995 | 1972 | 1981 | 1996 | 1981 | 1980 | 1983 | 1983 | 1987 | 1999 | 1980 | 1980 |
| Lowest Mean Temperature (F) | 9.3 | 17.0 | 28.9 | 36.0 | 47.3 | 55.6 | 60.2 | 58.1 | 51.8 | 40.3 | 22.2 | 12.2 | 9.3 |
| Year Lowest Occurred | 1984 | 1984 | 1984 | 1983 | 1995 | 1975 | 1973 | 1976 | 1993 | 1984 | 1972 | 1978 | 1984 |
| Mean Min. Temperature (F) | 4.7 | 10.6 | 19.4 | 25.5 | 34.9 | 42.3 | 48.0 | 47.0 | 38.8 | 29.2 | 16.5 | 6.7 | 27.0 |
| Highest Mean Min. Temperature (F) | 12.0 | 20.0 | 23.7 | 29.6 | 39.5 | 45.4 | 50.8 | 50.0 | 42.4 | 33.4 | 20.9 | 15.8 | 50.8 |
| Year Highest Occurred | 1986 | 1995 | 1974 | 1992 | 1996 | 1981 | 1998 | 1983 | 1997 | 1972 | 1981 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -6.2 | 1.1 | 15.1 | 21.1 | 31.5 | 39.1 | 45.6 | 43.9 | 35.5 | 25.7 | 8.9 | -3.4 | -6.2 |
| Year Lowest Occurred | 1984 | 1979 | 1984 | 1973 | 1999 | 1975 | 1995 | 1974 | 1993 | 1982 | 1972 | 1978 | 1984 |
| Mean Precipitation (in.) | 0.31 | 0.34 | 0.83 | 0.71 | 0.89 | 0.77 | 1.59 | 1.94 | 1.13 | 0.83 | 0.65 | 0.47 | 10.46 |
| Highest Precipitation (in.) | 0.95 | 1.00 | 3.13 | 2.07 | 2.71 | 2.09 | 3.86 | 4.91 | 2.86 | 3.15 | 1.61 | 1.71 | 4.91 |
| Year Highest Occurred | 1987 | 1987 | 1985 | 1990 | 1980 | 1996 | 1999 | 1982 | 1997 | 1972 | 1986 | 1978 | 1982 |
| Lowest Precipitation (in.) | 0.00 | 0.01 | 0.08 | 0.00 | 0.00 | 0.00 | 0.15 | 0.57 | 0.35 | 0.02 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1998 | 1972 | 1977 | 1974 | 1998 | 1998 | 1994 | 1978 | 1988 | 1995 | 1999 | 1996 | 1998 |
| Heating Degree Days (F) | 1415. | 1115. | 958. | 718. | 451. | 200. | 88. | 130. | 319. | 615. | 1016. | 1356. | 8381. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 5. | 20. | 16. | 0. | 0. | 0. | 0. | 41. |