| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 39.8 | 44.5 | 50.1 | 56.2 | 64.1 | 72.0 | 80.4 | 80.7 | 73.8 | 62.0 | 46.1 | 39.1 | 59.1 |
| Highest Mean Max. Temperature (F) | 46.9 | 53.0 | 61.1 | 65.2 | 74.9 | 79.7 | 88.7 | 86.6 | 82.4 | 74.3 | 52.7 | 43.0 | 88.7 |
| Year Highest Occurred | 1981 | 1977 | 1992 | 1987 | 1992 | 1974 | 1985 | 1986 | 1974 | 1987 | 1976 | 1974 | 1985 |
| Lowest Mean Max. Temperature (F) | 36.4 | 37.0 | 44.0 | 49.8 | 56.3 | 64.5 | 68.7 | 73.4 | 65.0 | 55.1 | 38.4 | 32.2 | 32.2 |
| Year Lowest Occurred | 1988 | 1989 | 1971 | 1975 | 1977 | 1980 | 1993 | 1976 | 1978 | 1984 | 1994 | 1990 | 1990 |
| Mean Temperature (F) | 33.0 | 36.0 | 39.8 | 44.5 | 50.8 | 57.4 | 63.4 | 63.0 | 56.8 | 48.3 | 38.4 | 32.9 | 47.0 |
| Highest Mean Temperature (F) | 38.5 | 42.2 | 46.4 | 49.9 | 57.4 | 62.7 | 68.1 | 67.1 | 60.7 | 54.7 | 43.0 | 36.9 | 68.1 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1992 | 1986 | 1985 | 1977 | 1991 | 1988 | 1995 | 1995 | 1985 |
| Lowest Mean Temperature (F) | 28.0 | 28.6 | 34.4 | 38.9 | 45.4 | 53.7 | 57.3 | 59.4 | 51.2 | 44.5 | 30.9 | 26.0 | 26.0 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1980 | 1993 | 1995 | 1985 | 1971 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 26.1 | 27.4 | 29.5 | 32.7 | 37.5 | 42.8 | 46.4 | 45.3 | 39.8 | 34.5 | 30.7 | 26.7 | 35.0 |
| Highest Mean Min. Temperature (F) | 30.9 | 32.2 | 33.6 | 37.0 | 41.4 | 46.8 | 51.2 | 49.3 | 44.1 | 39.0 | 35.4 | 31.7 | 51.2 |
| Year Highest Occurred | 1995 | 1992 | 1983 | 1992 | 1987 | 1992 | 1998 | 1990 | 1995 | 1988 | 1995 | 1995 | 1998 |
| Lowest Mean Min. Temperature (F) | 18.8 | 20.1 | 24.8 | 28.1 | 34.0 | 38.8 | 43.2 | 41.4 | 36.0 | 30.4 | 22.4 | 19.7 | 18.8 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1975 | 1976 | 1999 | 1980 | 1972 | 1974 | 1985 | 1990 | 1979 |
| Mean Precipitation (in.) | 10.54 | 8.90 | 7.32 | 5.37 | 3.98 | 2.67 | 1.11 | 1.08 | 2.27 | 4.91 | 11.21 | 11.54 | 70.90 |
| Highest Precipitation (in.) | 19.50 | 18.16 | 13.81 | 12.82 | 8.83 | 6.01 | 5.03 | 3.34 | 5.72 | 12.39 | 23.46 | 32.86 | 32.86 |
| Year Highest Occurred | 1972 | 1999 | 1983 | 1996 | 1998 | 1981 | 1983 | 1978 | 1986 | 1997 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.31 | 1.94 | 1.90 | 1.64 | 0.57 | 0.56 | 0.03 | 0.00 | 0.00 | 0.14 | 2.68 | 2.21 | 0.00 |
| Year Lowest Occurred | 1985 | 1989 | 1992 | 1999 | 1992 | 1979 | 1972 | 1998 | 1991 | 1987 | 1976 | 1976 | 1998 |
| Heating Degree Days (F) | 994. | 813. | 781. | 617. | 442. | 241. | 106. | 105. | 260. | 520. | 800. | 995. | 6674. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 13. | 55. | 43. | 14. | 0. | 0. | 0. | 126. |