| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 47.4 | 51.1 | 54.7 | 58.1 | 62.4 | 65.9 | 70.1 | 71.5 | 70.1 | 61.7 | 52.1 | 46.8 | 59.3 |
| Highest Mean Max. Temperature (F) | 52.9 | 56.1 | 61.9 | 63.8 | 69.1 | 69.7 | 73.4 | 74.6 | 75.4 | 66.9 | 56.3 | 51.6 | 75.4 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1989 | 1997 | 1992 | 1996 | 1997 | 1991 | 1987 | 1995 | 1979 | 1991 |
| Lowest Mean Max. Temperature (F) | 40.6 | 43.1 | 50.5 | 53.5 | 57.2 | 61.9 | 66.8 | 67.6 | 65.0 | 57.5 | 44.1 | 41.9 | 40.6 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1991 | 1971 | 1999 | 1975 | 1977 | 1975 | 1985 | 1990 | 1979 |
| Mean Temperature (F) | 42.1 | 44.6 | 47.0 | 49.4 | 53.4 | 57.0 | 60.3 | 61.3 | 59.6 | 53.2 | 46.2 | 41.7 | 51.3 |
| Highest Mean Temperature (F) | 46.4 | 49.3 | 51.2 | 53.7 | 58.2 | 60.8 | 62.7 | 63.1 | 63.0 | 56.7 | 51.1 | 46.1 | 63.1 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1989 | 1997 | 1978 | 1995 | 1971 | 1979 | 1978 | 1995 | 1979 | 1971 |
| Lowest Mean Temperature (F) | 35.0 | 36.7 | 43.4 | 45.1 | 50.4 | 54.5 | 58.1 | 58.7 | 56.3 | 50.2 | 38.7 | 36.0 | 35.0 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1991 | 1984 | 1999 | 1973 | 1986 | 1972 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 36.7 | 38.0 | 39.2 | 40.6 | 44.4 | 48.0 | 50.5 | 51.1 | 49.1 | 44.7 | 40.3 | 36.6 | 43.3 |
| Highest Mean Min. Temperature (F) | 40.7 | 42.4 | 42.6 | 44.5 | 47.6 | 52.4 | 53.4 | 54.2 | 53.4 | 49.6 | 45.8 | 41.7 | 54.2 |
| Year Highest Occurred | 1995 | 1991 | 1983 | 1992 | 1993 | 1978 | 1995 | 1977 | 1995 | 1979 | 1995 | 1973 | 1977 |
| Lowest Mean Min. Temperature (F) | 29.4 | 30.3 | 35.1 | 36.6 | 40.9 | 45.7 | 47.1 | 48.3 | 44.2 | 40.0 | 33.3 | 30.0 | 29.4 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1982 | 1976 | 1984 | 1988 | 1999 | 1972 | 1985 | 1990 | 1979 |
| Mean Precipitation (in.) | 14.13 | 11.81 | 10.81 | 7.22 | 5.25 | 3.72 | 1.72 | 1.66 | 3.80 | 7.56 | 14.63 | 15.82 | 98.13 |
| Highest Precipitation (in.) | 25.33 | 23.55 | 17.50 | 13.96 | 9.73 | 7.93 | 5.78 | 5.44 | 10.38 | 15.37 | 27.02 | 30.86 | 30.86 |
| Year Highest Occurred | 1971 | 1999 | 1987 | 1991 | 1988 | 1984 | 1983 | 1978 | 1971 | 1975 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 1.47 | 1.85 | 2.39 | 2.19 | 0.82 | 0.81 | 0.11 | 0.23 | 0.06 | 0.72 | 3.25 | 4.28 | 0.06 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1977 | 1992 | 1992 | 1973 | 1998 | 1975 | 1987 | 1976 | 1976 | 1975 |
| Heating Degree Days (F) | 712. | 573. | 561. | 470. | 361. | 242. | 148. | 118. | 169. | 366. | 565. | 722. | 5007. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 2. | 3. | 6. | 0. | 0. | 0. | 11. |