| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 45.8 | 49.3 | 53.3 | 58.2 | 63.8 | 68.4 | 73.0 | 73.9 | 68.7 | 59.7 | 50.6 | 45.2 | 59.2 |
| Highest Mean Max. Temperature (F) | 50.7 | 55.0 | 59.2 | 63.1 | 69.5 | 73.4 | 79.1 | 78.6 | 73.4 | 64.4 | 56.6 | 50.0 | 79.1 |
| Year Highest Occurred | 1986 | 1977 | 1992 | 1992 | 1993 | 1978 | 1985 | 1997 | 1974 | 2000 | 1997 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 39.3 | 42.2 | 48.1 | 53.7 | 60.0 | 64.0 | 68.4 | 68.4 | 64.0 | 55.3 | 41.8 | 38.2 | 38.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1986 | 1974 | 1971 | 1986 | 1976 | 1972 | 1990 | 1985 | 1990 | 1990 |
| Mean Temperature (F) | 39.7 | 42.1 | 45.3 | 49.7 | 55.1 | 59.7 | 63.6 | 63.9 | 58.8 | 51.1 | 44.0 | 39.6 | 51.1 |
| Highest Mean Temperature (F) | 44.8 | 47.4 | 48.5 | 52.6 | 59.9 | 63.2 | 67.7 | 67.7 | 61.6 | 54.1 | 48.1 | 45.0 | 67.7 |
| Year Highest Occurred | 1986 | 1991 | 1992 | 1989 | 1993 | 1978 | 1998 | 1977 | 1995 | 1988 | 1995 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 32.8 | 33.9 | 40.4 | 44.4 | 51.4 | 56.2 | 60.3 | 59.8 | 54.8 | 46.9 | 36.0 | 32.9 | 32.8 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1974 | 1971 | 1986 | 1973 | 1972 | 1972 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 33.6 | 34.9 | 37.3 | 41.2 | 46.3 | 51.0 | 54.2 | 53.9 | 48.8 | 42.5 | 37.4 | 34.0 | 42.9 |
| Highest Mean Min. Temperature (F) | 38.8 | 41.3 | 41.2 | 44.2 | 50.2 | 54.0 | 58.0 | 57.8 | 52.6 | 48.5 | 42.1 | 41.0 | 58.0 |
| Year Highest Occurred | 1986 | 1991 | 1978 | 1991 | 1993 | 1977 | 1991 | 1977 | 1978 | 1988 | 1989 | 1980 | 1991 |
| Lowest Mean Min. Temperature (F) | 26.2 | 25.6 | 32.7 | 35.1 | 42.7 | 48.3 | 51.1 | 50.0 | 45.0 | 37.7 | 26.8 | 26.9 | 25.6 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1999 | 1971 | 1974 | 1992 | 1971 | 1972 | 1993 | 1983 | 1989 |
| Mean Precipitation (in.) | 4.37 | 3.41 | 3.86 | 2.96 | 2.57 | 2.26 | 1.32 | 1.35 | 2.09 | 3.25 | 5.11 | 4.99 | 37.54 |
| Highest Precipitation (in.) | 9.77 | 6.57 | 6.08 | 5.30 | 6.03 | 5.35 | 3.57 | 3.58 | 5.20 | 8.53 | 9.30 | 7.70 | 9.77 |
| Year Highest Occurred | 1971 | 1999 | 1997 | 1972 | 1977 | 1983 | 1993 | 1976 | 1972 | 1975 | 1983 | 1987 | 1971 |
| Lowest Precipitation (in.) | 0.54 | 0.40 | 0.87 | 1.21 | 0.88 | 0.48 | 0.09 | 0.06 | 0.27 | 0.08 | 0.95 | 0.76 | 0.06 |
| Year Lowest Occurred | 1985 | 1993 | 1996 | 1989 | 1982 | 1979 | 1985 | 1986 | 1975 | 1987 | 1976 | 1985 | 1986 |
| Heating Degree Days (F) | 784. | 641. | 611. | 460. | 308. | 169. | 90. | 90. | 198. | 430. | 630. | 788. | 5199. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 10. | 46. | 55. | 10. | 0. | 0. | 0. | 121. |