| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 53.6 | 54.4 | 54.6 | 56.6 | 59.6 | 62.7 | 65.4 | 66.0 | 66.0 | 63.0 | 56.7 | 54.0 | 59.4 |
| Highest Mean Max. Temperature (F) | 59.9 | 59.0 | 59.4 | 62.5 | 65.8 | 65.5 | 68.4 | 70.0 | 71.4 | 67.4 | 60.3 | 58.1 | 71.4 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1989 | 1997 | 1997 | 1997 | 1997 | 1979 | 1974 | 1976 | 1980 | 1979 |
| Lowest Mean Max. Temperature (F) | 47.6 | 48.8 | 50.5 | 51.2 | 55.9 | 60.2 | 62.4 | 63.2 | 62.5 | 59.9 | 50.4 | 48.7 | 47.6 |
| Year Lowest Occurred | 1972 | 1989 | 1976 | 1971 | 1971 | 1971 | 1999 | 1980 | 1975 | 1984 | 1985 | 1990 | 1972 |
| Mean Temperature (F) | 46.6 | 47.8 | 48.2 | 50.0 | 52.8 | 55.6 | 57.9 | 58.4 | 57.4 | 54.2 | 49.4 | 46.5 | 52.1 |
| Highest Mean Temperature (F) | 51.7 | 52.1 | 52.5 | 54.4 | 57.0 | 57.9 | 60.3 | 61.8 | 62.3 | 56.9 | 52.3 | 50.4 | 62.3 |
| Year Highest Occurred | 1981 | 1980 | 1992 | 1992 | 1997 | 1981 | 1995 | 1997 | 1979 | 1987 | 1976 | 1995 | 1979 |
| Lowest Mean Temperature (F) | 42.7 | 41.3 | 43.4 | 45.8 | 50.1 | 53.4 | 55.5 | 55.1 | 54.5 | 51.6 | 43.3 | 40.5 | 40.5 |
| Year Lowest Occurred | 1972 | 1989 | 1985 | 1975 | 1999 | 1984 | 1981 | 1980 | 1987 | 1971 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 39.6 | 41.2 | 41.8 | 43.3 | 46.0 | 48.4 | 50.4 | 50.8 | 48.7 | 45.4 | 42.0 | 38.9 | 44.7 |
| Highest Mean Min. Temperature (F) | 45.6 | 46.0 | 47.0 | 47.5 | 49.7 | 50.5 | 53.4 | 53.6 | 53.4 | 48.7 | 46.3 | 44.7 | 53.6 |
| Year Highest Occurred | 1998 | 1983 | 1983 | 1992 | 1993 | 1981 | 1995 | 1999 | 1990 | 1979 | 1999 | 1995 | 1999 |
| Lowest Mean Min. Temperature (F) | 35.0 | 33.9 | 36.4 | 38.7 | 43.0 | 45.5 | 47.9 | 46.9 | 46.4 | 41.8 | 36.0 | 32.4 | 32.4 |
| Year Lowest Occurred | 1985 | 1989 | 1985 | 1975 | 1974 | 1984 | 1981 | 1980 | 1987 | 1974 | 1978 | 1990 | 1990 |
| Mean Precipitation (in.) | 10.15 | 9.18 | 9.22 | 5.13 | 3.13 | 1.57 | 0.40 | 0.74 | 1.67 | 4.56 | 9.84 | 11.23 | 66.82 |
| Highest Precipitation (in.) | 22.28 | 20.18 | 16.82 | 13.77 | 7.66 | 4.62 | 2.20 | 4.37 | 8.94 | 12.56 | 31.25 | 31.10 | 31.25 |
| Year Highest Occurred | 1998 | 1986 | 1983 | 1993 | 1990 | 1985 | 1983 | 1983 | 1977 | 1975 | 1973 | 1996 | 1973 |
| Lowest Precipitation (in.) | 0.52 | 0.62 | 3.32 | 1.09 | 0.13 | 0.09 | 0.00 | 0.00 | 0.00 | 0.09 | 2.69 | 0.96 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1994 | 1985 | 1982 | 1987 | 1994 | 1988 | 1999 | 1987 | 1976 | 1976 | 1994 |
| Heating Degree Days (F) | 571. | 483. | 506. | 452. | 378. | 284. | 221. | 207. | 234. | 335. | 469. | 576. | 4716. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 3. | 3. | 0. | 0. | 0. | 6. |