| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 55.2 | 56.4 | 57.8 | 59.9 | 63.4 | 66.7 | 68.1 | 67.6 | 68.1 | 64.6 | 58.2 | 55.1 | 61.8 |
| Highest Mean Max. Temperature (F) | 60.0 | 60.2 | 61.9 | 64.5 | 67.6 | 71.1 | 72.4 | 72.3 | 72.4 | 68.5 | 62.8 | 58.2 | 72.4 |
| Year Highest Occurred | 1981 | 1987 | 1992 | 1987 | 1987 | 1985 | 1993 | 1987 | 1979 | 1974 | 1989 | 1997 | 1993 |
| Lowest Mean Max. Temperature (F) | 50.6 | 51.3 | 53.7 | 56.2 | 60.5 | 62.4 | 64.6 | 63.8 | 64.6 | 61.2 | 53.4 | 50.2 | 50.2 |
| Year Lowest Occurred | 1972 | 1989 | 1999 | 1971 | 1991 | 1971 | 1971 | 1991 | 1977 | 1971 | 1985 | 1972 | 1972 |
| Mean Temperature (F) | 48.5 | 49.5 | 50.1 | 51.8 | 55.1 | 58.3 | 60.1 | 60.1 | 59.8 | 56.4 | 51.4 | 48.3 | 54.1 |
| Highest Mean Temperature (F) | 52.8 | 52.9 | 54.3 | 55.5 | 59.3 | 60.9 | 62.7 | 63.0 | 64.1 | 59.1 | 54.8 | 52.3 | 64.1 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1992 | 1987 | 1985 | 1995 | 1987 | 1979 | 1992 | 1986 | 1995 | 1979 |
| Lowest Mean Temperature (F) | 44.6 | 44.1 | 46.5 | 47.9 | 52.6 | 55.1 | 57.4 | 56.9 | 57.3 | 53.0 | 46.1 | 43.0 | 43.0 |
| Year Lowest Occurred | 1972 | 1989 | 1976 | 1975 | 1991 | 1971 | 1999 | 1973 | 1993 | 1971 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 41.7 | 42.5 | 42.4 | 43.7 | 46.8 | 49.8 | 52.0 | 52.6 | 51.4 | 48.2 | 44.6 | 41.4 | 46.4 |
| Highest Mean Min. Temperature (F) | 47.2 | 46.1 | 46.8 | 48.1 | 50.9 | 53.1 | 55.3 | 55.3 | 55.7 | 51.8 | 48.5 | 46.7 | 55.7 |
| Year Highest Occurred | 1995 | 1983 | 1993 | 1992 | 1987 | 1988 | 1995 | 1983 | 1979 | 1979 | 1999 | 1995 | 1979 |
| Lowest Mean Min. Temperature (F) | 38.1 | 36.9 | 38.5 | 39.4 | 44.3 | 46.9 | 49.2 | 49.6 | 48.9 | 44.8 | 38.8 | 35.2 | 35.2 |
| Year Lowest Occurred | 1982 | 1989 | 1976 | 1975 | 1974 | 1999 | 1973 | 1995 | 1989 | 1971 | 1985 | 1990 | 1990 |
| Mean Precipitation (in.) | 11.28 | 10.14 | 9.61 | 5.72 | 3.61 | 1.83 | 0.51 | 1.04 | 1.95 | 5.22 | 10.58 | 11.99 | 73.48 |
| Highest Precipitation (in.) | 24.55 | 21.07 | 15.92 | 15.34 | 9.92 | 4.90 | 2.40 | 6.04 | 7.38 | 12.37 | 26.01 | 30.60 | 30.60 |
| Year Highest Occurred | 1998 | 1998 | 1995 | 1993 | 1993 | 1995 | 1993 | 1983 | 1977 | 1981 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.50 | 3.24 | 4.06 | 1.32 | 0.01 | 0.36 | 0.00 | 0.00 | 0.00 | 0.16 | 3.82 | 2.10 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1992 | 1973 | 1982 | 1991 | 1980 | 1998 | 1999 | 1978 | 1993 | 1976 | 1980 |
| Heating Degree Days (F) | 513. | 437. | 448. | 396. | 307. | 204. | 158. | 155. | 165. | 268. | 408. | 519. | 3978. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 1. | 4. | 4. | 7. | 1. | 0. | 0. | 17. |