| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 55.4 | 56.0 | 56.6 | 58.6 | 61.9 | 65.1 | 68.0 | 68.6 | 68.3 | 64.6 | 57.6 | 54.8 | 61.3 |
| Highest Mean Max. Temperature (F) | 59.1 | 61.7 | 60.1 | 61.9 | 66.6 | 68.3 | 71.7 | 71.6 | 71.6 | 67.9 | 62.3 | 60.3 | 71.7 |
| Year Highest Occurred | 1994 | 1992 | 1992 | 2000 | 1997 | 2000 | 1997 | 1984 | 1997 | 1991 | 1979 | 1979 | 1997 |
| Lowest Mean Max. Temperature (F) | 51.7 | 51.0 | 54.0 | 55.2 | 58.4 | 61.8 | 63.8 | 65.4 | 63.6 | 60.3 | 52.5 | 50.0 | 50.0 |
| Year Lowest Occurred | 1972 | 1989 | 1971 | 1975 | 1991 | 1971 | 1999 | 1977 | 1986 | 1984 | 1994 | 1990 | 1990 |
| Mean Temperature (F) | 48.2 | 48.7 | 49.1 | 50.9 | 54.0 | 57.2 | 59.7 | 60.4 | 59.6 | 56.0 | 50.5 | 47.8 | 53.5 |
| Highest Mean Temperature (F) | 52.2 | 53.2 | 52.8 | 54.8 | 57.8 | 59.7 | 62.3 | 62.1 | 63.4 | 58.8 | 53.8 | 51.8 | 63.4 |
| Year Highest Occurred | 1995 | 1992 | 1978 | 1992 | 1997 | 2000 | 1997 | 1997 | 1979 | 1978 | 1976 | 1995 | 1979 |
| Lowest Mean Temperature (F) | 45.0 | 43.2 | 45.7 | 46.7 | 51.4 | 53.9 | 57.3 | 58.0 | 56.5 | 53.4 | 45.2 | 41.6 | 41.6 |
| Year Lowest Occurred | 1972 | 1989 | 1977 | 1975 | 1977 | 1971 | 1999 | 1973 | 1986 | 1984 | 1994 | 1990 | 1990 |
| Mean Min. Temperature (F) | 40.9 | 41.4 | 41.6 | 43.1 | 46.0 | 49.3 | 51.4 | 52.1 | 50.8 | 47.3 | 43.4 | 40.7 | 45.7 |
| Highest Mean Min. Temperature (F) | 46.5 | 45.7 | 46.1 | 47.9 | 49.8 | 51.6 | 53.9 | 54.3 | 55.1 | 51.1 | 47.4 | 45.9 | 55.1 |
| Year Highest Occurred | 1998 | 1980 | 1993 | 1992 | 1993 | 1993 | 1995 | 1990 | 1979 | 1979 | 1999 | 1995 | 1979 |
| Lowest Mean Min. Temperature (F) | 36.7 | 35.3 | 37.0 | 38.1 | 43.1 | 46.0 | 48.5 | 48.3 | 48.4 | 44.0 | 37.9 | 33.1 | 33.1 |
| Year Lowest Occurred | 1977 | 1989 | 1977 | 1975 | 1977 | 1971 | 1977 | 1973 | 1972 | 1974 | 1994 | 1990 | 1990 |
| Mean Precipitation (in.) | 11.74 | 11.03 | 10.67 | 6.52 | 3.85 | 1.86 | 0.45 | 1.10 | 2.18 | 5.04 | 11.82 | 13.28 | 79.54 |
| Highest Precipitation (in.) | 21.38 | 23.68 | 19.22 | 15.48 | 9.13 | 6.68 | 2.90 | 5.69 | 8.74 | 12.07 | 34.48 | 27.46 | 34.48 |
| Year Highest Occurred | 1995 | 1986 | 1983 | 1993 | 1993 | 1985 | 1983 | 1983 | 1977 | 1981 | 1973 | 1981 | 1973 |
| Lowest Precipitation (in.) | 1.01 | 0.92 | 4.53 | 1.28 | 0.05 | 0.14 | 0.00 | 0.00 | 0.00 | 0.07 | 3.29 | 2.21 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1978 | 1973 | 1992 | 1991 | 1994 | 1994 | 1999 | 1978 | 1989 | 1976 | 1994 |
| Heating Degree Days (F) | 523. | 457. | 479. | 425. | 343. | 234. | 166. | 145. | 169. | 280. | 436. | 534. | 4191. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 2. | 5. | 4. | 0. | 0. | 0. | 11. |