| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 53.5 | 54.6 | 55.0 | 57.1 | 60.6 | 64.1 | 67.3 | 68.4 | 67.8 | 63.0 | 56.5 | 53.5 | 60.1 |
| Highest Mean Max. Temperature (F) | 59.8 | 58.3 | 59.1 | 60.5 | 66.0 | 66.6 | 69.9 | 71.1 | 72.1 | 66.4 | 61.1 | 57.2 | 72.1 |
| Year Highest Occurred | 1981 | 1977 | 1978 | 1989 | 1992 | 1978 | 1990 | 1992 | 1979 | 1991 | 1976 | 1980 | 1979 |
| Lowest Mean Max. Temperature (F) | 49.7 | 48.8 | 49.7 | 53.3 | 57.6 | 61.1 | 63.0 | 65.8 | 65.3 | 59.4 | 52.2 | 48.2 | 48.2 |
| Year Lowest Occurred | 1972 | 1989 | 1971 | 1975 | 1991 | 1971 | 1999 | 1975 | 1986 | 1975 | 1994 | 1990 | 1990 |
| Mean Temperature (F) | 46.5 | 47.8 | 48.1 | 49.8 | 53.4 | 56.9 | 59.9 | 60.7 | 59.4 | 54.8 | 49.8 | 46.7 | 52.8 |
| Highest Mean Temperature (F) | 50.9 | 51.2 | 51.7 | 53.4 | 57.0 | 59.4 | 62.2 | 62.5 | 63.6 | 57.8 | 53.2 | 50.9 | 63.6 |
| Year Highest Occurred | 1981 | 2000 | 1978 | 1992 | 1992 | 1978 | 1997 | 1977 | 1979 | 1979 | 1999 | 2000 | 1979 |
| Lowest Mean Temperature (F) | 42.8 | 41.5 | 43.2 | 45.8 | 50.8 | 54.6 | 56.9 | 57.3 | 57.4 | 52.4 | 44.7 | 40.4 | 40.4 |
| Year Lowest Occurred | 1972 | 1989 | 1971 | 1975 | 1971 | 1971 | 1999 | 1973 | 1972 | 1971 | 1994 | 1990 | 1990 |
| Mean Min. Temperature (F) | 39.5 | 41.0 | 41.2 | 42.5 | 46.1 | 49.7 | 52.5 | 52.9 | 50.9 | 46.5 | 43.1 | 39.8 | 45.5 |
| Highest Mean Min. Temperature (F) | 46.1 | 45.1 | 45.8 | 47.3 | 49.4 | 52.3 | 55.1 | 56.2 | 55.0 | 51.0 | 48.1 | 45.7 | 56.2 |
| Year Highest Occurred | 1998 | 2000 | 1993 | 1992 | 1997 | 1978 | 1997 | 1977 | 1979 | 1979 | 1999 | 2000 | 1977 |
| Lowest Mean Min. Temperature (F) | 35.6 | 34.2 | 36.8 | 38.4 | 43.2 | 47.8 | 49.6 | 47.8 | 46.5 | 42.0 | 37.1 | 32.6 | 32.6 |
| Year Lowest Occurred | 1985 | 1989 | 1971 | 1975 | 1974 | 1972 | 1973 | 1973 | 2000 | 1974 | 1994 | 1990 | 1990 |
| Mean Precipitation (in.) | 11.40 | 9.57 | 9.69 | 5.75 | 3.85 | 2.11 | 0.63 | 1.20 | 2.02 | 4.86 | 10.89 | 12.24 | 74.21 |
| Highest Precipitation (in.) | 19.47 | 19.21 | 16.71 | 13.04 | 7.39 | 4.75 | 3.39 | 4.29 | 7.84 | 12.10 | 30.50 | 24.37 | 30.50 |
| Year Highest Occurred | 1995 | 1986 | 1974 | 1993 | 1993 | 1995 | 1983 | 1976 | 1986 | 1975 | 1973 | 1981 | 1973 |
| Lowest Precipitation (in.) | 1.20 | 1.83 | 3.89 | 1.72 | 0.03 | 0.12 | 0.00 | 0.00 | 0.00 | 0.32 | 3.26 | 2.24 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1978 | 1977 | 1992 | 1991 | 1994 | 2000 | 1993 | 1978 | 1993 | 1976 | 1994 |
| Heating Degree Days (F) | 574. | 482. | 509. | 456. | 362. | 243. | 160. | 139. | 173. | 318. | 457. | 570. | 4443. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 2. | 4. | 3. | 0. | 0. | 0. | 9. |