| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 52.7 | 54.6 | 55.5 | 57.4 | 60.9 | 63.8 | 66.6 | 67.6 | 67.2 | 63.0 | 56.7 | 52.8 | 59.9 |
| Highest Mean Max. Temperature (F) | 57.8 | 60.6 | 60.0 | 62.4 | 66.6 | 66.7 | 69.6 | 71.4 | 71.9 | 65.4 | 59.9 | 56.7 | 71.9 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1992 | 1997 | 1997 | 1997 | 1994 | 1979 | 1995 | 1995 | 1980 | 1979 |
| Lowest Mean Max. Temperature (F) | 47.6 | 48.8 | 50.5 | 51.5 | 57.3 | 61.1 | 64.0 | 64.8 | 64.2 | 59.1 | 50.1 | 46.2 | 46.2 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1971 | 1991 | 1999 | 1986 | 1977 | 1971 | 1985 | 1990 | 1990 |
| Mean Temperature (F) | 46.1 | 47.7 | 48.5 | 50.2 | 53.9 | 57.1 | 59.6 | 60.3 | 58.7 | 54.5 | 49.7 | 46.1 | 52.7 |
| Highest Mean Temperature (F) | 50.0 | 52.6 | 52.3 | 54.7 | 58.6 | 59.7 | 62.2 | 63.6 | 63.1 | 57.9 | 54.1 | 50.7 | 63.6 |
| Year Highest Occurred | 1995 | 1992 | 1992 | 1992 | 1997 | 1997 | 1995 | 1997 | 1979 | 1979 | 1995 | 1995 | 1997 |
| Lowest Mean Temperature (F) | 40.3 | 40.7 | 44.1 | 45.0 | 51.2 | 53.6 | 57.5 | 57.5 | 56.6 | 50.8 | 43.3 | 38.2 | 38.2 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1976 | 1976 | 1977 | 1988 | 1999 | 1971 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 39.4 | 40.8 | 41.4 | 43.0 | 46.9 | 50.3 | 52.6 | 52.9 | 50.2 | 45.9 | 42.6 | 39.4 | 45.5 |
| Highest Mean Min. Temperature (F) | 45.1 | 44.9 | 46.3 | 46.9 | 50.5 | 52.8 | 55.4 | 55.9 | 55.0 | 51.3 | 48.3 | 44.9 | 55.9 |
| Year Highest Occurred | 1995 | 1983 | 1983 | 1992 | 1997 | 1978 | 1998 | 1997 | 1997 | 1979 | 1995 | 1995 | 1997 |
| Lowest Mean Min. Temperature (F) | 33.1 | 32.6 | 37.2 | 38.5 | 43.4 | 45.3 | 49.4 | 49.6 | 47.5 | 41.3 | 35.8 | 30.1 | 30.1 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1976 | 1976 | 1977 | 1988 | 1999 | 1974 | 1993 | 1990 | 1990 |
| Mean Precipitation (in.) | 9.54 | 8.12 | 7.94 | 5.19 | 3.40 | 1.72 | 0.51 | 0.88 | 1.73 | 4.62 | 10.36 | 10.42 | 64.43 |
| Highest Precipitation (in.) | 20.96 | 16.26 | 14.13 | 11.13 | 9.30 | 4.80 | 2.79 | 2.72 | 5.70 | 12.46 | 22.69 | 20.76 | 22.69 |
| Year Highest Occurred | 1995 | 1986 | 1995 | 1993 | 1998 | 1985 | 1983 | 1971 | 1997 | 1990 | 1973 | 1987 | 1973 |
| Lowest Precipitation (in.) | 0.75 | 2.32 | 2.37 | 1.28 | 0.30 | 0.12 | 0.00 | 0.00 | 0.00 | 0.36 | 2.55 | 1.70 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1978 | 1977 | 1992 | 1987 | 1973 | 1974 | 1975 | 1987 | 1976 | 1989 | 1973 |
| Heating Degree Days (F) | 588. | 485. | 498. | 445. | 344. | 238. | 169. | 154. | 195. | 327. | 461. | 586. | 4490. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 1. | 5. | 6. | 0. | 0. | 0. | 12. |