| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 44.7 | 46.5 | 49.4 | 55.3 | 63.7 | 73.5 | 80.7 | 80.6 | 74.9 | 64.3 | 50.1 | 44.1 | 60.7 |
| Highest Mean Max. Temperature (F) | 51.6 | 55.8 | 56.1 | 64.7 | 73.1 | 82.3 | 85.1 | 86.5 | 83.5 | 72.2 | 60.3 | 53.5 | 86.5 |
| Year Highest Occurred | 1976 | 1991 | 1997 | 1987 | 1992 | 1977 | 1977 | 1981 | 1974 | 1988 | 1976 | 1976 | 1981 |
| Lowest Mean Max. Temperature (F) | 39.1 | 37.1 | 41.4 | 46.2 | 49.7 | 67.2 | 75.8 | 72.9 | 63.4 | 55.7 | 40.4 | 36.7 | 36.7 |
| Year Lowest Occurred | 1993 | 1998 | 1991 | 1975 | 1998 | 1980 | 1987 | 1976 | 1986 | 1984 | 1994 | 1987 | 1987 |
| Mean Temperature (F) | 35.4 | 36.6 | 38.8 | 43.0 | 50.3 | 58.5 | 64.2 | 64.0 | 59.5 | 50.7 | 39.8 | 34.7 | 48.0 |
| Highest Mean Temperature (F) | 39.8 | 43.1 | 43.2 | 49.2 | 57.6 | 66.3 | 67.6 | 68.1 | 65.7 | 56.5 | 46.9 | 40.7 | 68.1 |
| Year Highest Occurred | 1976 | 1991 | 1978 | 1987 | 1992 | 1977 | 1984 | 1977 | 1975 | 1988 | 1976 | 1980 | 1977 |
| Lowest Mean Temperature (F) | 30.8 | 30.5 | 33.1 | 35.4 | 40.6 | 54.2 | 59.7 | 59.7 | 51.0 | 44.8 | 31.7 | 28.6 | 28.6 |
| Year Lowest Occurred | 1993 | 1989 | 1991 | 1975 | 1998 | 1980 | 1987 | 1989 | 1986 | 1984 | 1994 | 1972 | 1972 |
| Mean Min. Temperature (F) | 26.1 | 26.6 | 28.1 | 30.7 | 36.8 | 43.4 | 47.6 | 47.4 | 44.0 | 37.0 | 29.5 | 25.3 | 35.2 |
| Highest Mean Min. Temperature (F) | 31.5 | 30.9 | 34.2 | 35.5 | 42.1 | 50.3 | 51.5 | 51.9 | 51.3 | 42.3 | 33.6 | 31.0 | 51.9 |
| Year Highest Occurred | 1978 | 1992 | 1978 | 1977 | 1992 | 1977 | 1971 | 1977 | 1975 | 1978 | 1976 | 1977 | 1977 |
| Lowest Mean Min. Temperature (F) | 21.6 | 19.7 | 23.6 | 24.7 | 31.5 | 40.0 | 43.7 | 44.4 | 38.6 | 32.4 | 23.0 | 17.7 | 17.7 |
| Year Lowest Occurred | 1987 | 1990 | 1985 | 1975 | 1998 | 1991 | 2000 | 1973 | 1986 | 1994 | 1994 | 1972 | 1972 |
| Mean Precipitation (in.) | 12.96 | 12.39 | 11.44 | 5.48 | 3.45 | 1.20 | 0.39 | 0.51 | 1.73 | 3.99 | 9.44 | 11.00 | 73.98 |
| Highest Precipitation (in.) | 34.42 | 42.88 | 34.38 | 16.26 | 12.57 | 3.72 | 6.41 | 3.78 | 9.26 | 10.22 | 27.73 | 42.86 | 42.88 |
| Year Highest Occurred | 1995 | 1986 | 1995 | 1982 | 1996 | 1992 | 1974 | 1976 | 1986 | 1975 | 1973 | 1996 | 1986 |
| Lowest Precipitation (in.) | 0.79 | 0.95 | 1.84 | 0.60 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 1.12 | 0.00 | 0.00 |
| Year Lowest Occurred | 1984 | 1988 | 1988 | 1977 | 1976 | 1986 | 2000 | 2000 | 1992 | 1988 | 1986 | 1989 | 1976 |
| Heating Degree Days (F) | 918. | 807. | 798. | 660. | 462. | 218. | 88. | 83. | 200. | 450. | 756. | 939. | 6379. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 6. | 20. | 61. | 53. | 34. | 5. | 0. | 0. | 179. |