| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 45.7 | 49.5 | 53.4 | 58.1 | 64.0 | 68.4 | 73.0 | 74.1 | 69.1 | 60.0 | 50.9 | 46.0 | 59.4 |
| Highest Mean Max. Temperature (F) | 52.7 | 53.7 | 58.3 | 62.0 | 67.6 | 73.0 | 79.6 | 78.0 | 75.5 | 64.7 | 55.2 | 51.5 | 79.6 |
| Year Highest Occurred | 1986 | 1991 | 1992 | 1989 | 1997 | 1982 | 1985 | 1977 | 1974 | 1987 | 1981 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 40.0 | 42.1 | 48.7 | 54.0 | 60.1 | 64.2 | 68.5 | 68.9 | 64.1 | 56.9 | 40.2 | 40.3 | 40.0 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1972 | 1974 | 1971 | 1993 | 1976 | 1972 | 1971 | 1985 | 1984 | 1979 |
| Mean Temperature (F) | 39.9 | 42.7 | 45.7 | 49.3 | 54.7 | 58.9 | 62.3 | 62.9 | 58.3 | 50.9 | 44.5 | 40.3 | 50.9 |
| Highest Mean Temperature (F) | 46.4 | 47.3 | 49.3 | 52.0 | 59.2 | 62.1 | 65.3 | 65.9 | 61.6 | 53.5 | 49.0 | 45.2 | 65.9 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1996 | 1993 | 1992 | 1985 | 1997 | 1995 | 1993 | 1995 | 1991 | 1997 |
| Lowest Mean Temperature (F) | 33.1 | 34.4 | 41.5 | 45.1 | 51.0 | 55.8 | 60.2 | 59.7 | 54.0 | 47.9 | 33.8 | 35.0 | 33.1 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1974 | 1971 | 1974 | 1973 | 1972 | 1972 | 1985 | 1984 | 1979 |
| Mean Min. Temperature (F) | 34.1 | 35.9 | 37.9 | 40.5 | 45.4 | 49.4 | 51.5 | 51.6 | 47.5 | 41.8 | 38.1 | 34.6 | 42.4 |
| Highest Mean Min. Temperature (F) | 40.5 | 40.9 | 42.0 | 45.3 | 50.9 | 52.8 | 54.7 | 54.3 | 51.8 | 46.2 | 43.1 | 39.6 | 54.7 |
| Year Highest Occurred | 1994 | 1991 | 1986 | 1993 | 1993 | 1993 | 1992 | 1997 | 1997 | 1988 | 1983 | 1991 | 1992 |
| Lowest Mean Min. Temperature (F) | 26.2 | 26.7 | 34.2 | 35.9 | 42.0 | 45.8 | 48.6 | 48.0 | 43.8 | 36.9 | 27.3 | 29.3 | 26.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1974 | 1976 | 1971 | 1973 | 1972 | 1987 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 4.22 | 2.85 | 2.81 | 2.53 | 2.42 | 1.95 | 1.20 | 1.34 | 1.70 | 2.89 | 4.83 | 3.96 | 32.70 |
| Highest Precipitation (in.) | 12.61 | 4.15 | 5.23 | 4.62 | 4.64 | 4.81 | 2.98 | 3.81 | 3.80 | 7.34 | 13.62 | 7.80 | 13.62 |
| Year Highest Occurred | 1974 | 1974 | 1989 | 1972 | 2000 | 1990 | 1986 | 1995 | 1978 | 1985 | 1990 | 1979 | 1990 |
| Lowest Precipitation (in.) | 0.59 | 0.48 | 0.83 | 1.40 | 0.46 | 0.23 | 0.02 | 0.00 | 0.17 | 0.49 | 1.11 | 0.88 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1998 | 1994 | 1996 | 1984 | 1986 | 1989 | 1980 | 1976 | 1985 | 1986 |
| Heating Degree Days (F) | 778. | 625. | 600. | 471. | 321. | 187. | 101. | 90. | 208. | 437. | 614. | 765. | 5197. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 3. | 15. | 23. | 6. | 0. | 0. | 0. | 47. |