| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 54.3 | 55.6 | 56.2 | 58.2 | 61.1 | 64.3 | 66.9 | 67.7 | 67.6 | 63.7 | 57.3 | 54.0 | 60.6 |
| Highest Mean Max. Temperature (F) | 60.5 | 60.6 | 60.1 | 63.4 | 66.4 | 67.7 | 70.6 | 71.5 | 71.4 | 67.3 | 60.1 | 58.5 | 71.5 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1992 | 1997 | 1997 | 1997 | 1994 | 1997 | 1991 | 1980 | 1980 | 1994 |
| Lowest Mean Max. Temperature (F) | 49.6 | 49.3 | 52.3 | 53.9 | 57.7 | 61.2 | 64.3 | 65.3 | 63.5 | 60.6 | 51.3 | 48.7 | 48.7 |
| Year Lowest Occurred | 1972 | 1989 | 1976 | 1975 | 1971 | 1976 | 1971 | 1988 | 1986 | 1971 | 1985 | 1990 | 1990 |
| Mean Temperature (F) | 46.3 | 47.5 | 48.0 | 49.8 | 52.9 | 56.4 | 59.0 | 59.3 | 57.8 | 53.9 | 49.4 | 46.1 | 52.2 |
| Highest Mean Temperature (F) | 50.4 | 51.5 | 51.6 | 54.4 | 57.3 | 59.2 | 61.3 | 62.3 | 62.0 | 56.2 | 52.6 | 50.8 | 62.3 |
| Year Highest Occurred | 1981 | 1991 | 1986 | 1992 | 1997 | 1997 | 1992 | 1997 | 1979 | 1979 | 1995 | 1995 | 1997 |
| Lowest Mean Temperature (F) | 42.2 | 40.9 | 44.1 | 45.5 | 50.6 | 52.6 | 56.3 | 56.6 | 55.0 | 51.1 | 43.7 | 39.9 | 39.9 |
| Year Lowest Occurred | 1972 | 1989 | 1976 | 1975 | 1977 | 1976 | 1977 | 1988 | 1986 | 1971 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 38.2 | 39.3 | 39.7 | 41.3 | 44.7 | 48.5 | 51.0 | 50.8 | 48.0 | 44.0 | 41.4 | 38.2 | 43.8 |
| Highest Mean Min. Temperature (F) | 44.0 | 43.6 | 44.3 | 45.4 | 48.5 | 51.5 | 54.0 | 53.5 | 52.6 | 48.6 | 45.7 | 43.7 | 54.0 |
| Year Highest Occurred | 1995 | 1980 | 1993 | 1992 | 1993 | 1978 | 1998 | 1997 | 1979 | 1988 | 1995 | 1995 | 1998 |
| Lowest Mean Min. Temperature (F) | 34.4 | 32.5 | 35.9 | 37.1 | 41.7 | 43.9 | 47.5 | 46.9 | 43.3 | 38.4 | 34.9 | 31.1 | 31.1 |
| Year Lowest Occurred | 1974 | 1989 | 2000 | 1975 | 1976 | 1976 | 1977 | 1980 | 1980 | 1974 | 1993 | 1990 | 1990 |
| Mean Precipitation (in.) | 9.22 | 7.76 | 7.39 | 4.61 | 3.16 | 1.63 | 0.43 | 0.90 | 1.63 | 3.88 | 9.13 | 9.71 | 59.45 |
| Highest Precipitation (in.) | 17.50 | 15.10 | 11.67 | 11.35 | 7.47 | 3.92 | 2.17 | 3.88 | 5.45 | 8.54 | 23.35 | 20.96 | 23.35 |
| Year Highest Occurred | 1995 | 1983 | 1989 | 1978 | 1998 | 1984 | 1983 | 1977 | 1986 | 1975 | 1973 | 1981 | 1973 |
| Lowest Precipitation (in.) | 1.00 | 1.95 | 2.71 | 1.18 | 0.21 | 0.20 | 0.05 | 0.01 | 0.00 | 0.34 | 2.32 | 1.63 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1992 | 1987 | 1992 | 1991 | 1994 | 1988 | 1975 | 1987 | 1993 | 1976 | 1975 |
| Heating Degree Days (F) | 583. | 492. | 512. | 459. | 374. | 258. | 188. | 179. | 220. | 346. | 470. | 585. | 4666. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 2. | 3. | 0. | 0. | 0. | 5. |