| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 46.9 | 50.9 | 55.3 | 60.8 | 67.1 | 72.2 | 77.8 | 78.4 | 72.8 | 62.1 | 51.8 | 46.4 | 61.9 |
| Highest Mean Max. Temperature (F) | 52.1 | 55.9 | 59.8 | 65.6 | 72.2 | 77.5 | 85.9 | 82.7 | 77.8 | 67.5 | 56.8 | 50.4 | 85.9 |
| Year Highest Occurred | 1986 | 1991 | 1992 | 1989 | 1992 | 1982 | 1985 | 1986 | 1998 | 1987 | 1997 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 41.5 | 44.2 | 47.4 | 55.7 | 62.6 | 67.2 | 70.5 | 72.1 | 66.6 | 58.7 | 42.8 | 40.8 | 40.8 |
| Year Lowest Occurred | 1980 | 1989 | 1971 | 1972 | 1996 | 1971 | 1993 | 1976 | 1978 | 1975 | 1985 | 1985 | 1985 |
| Mean Temperature (F) | 39.9 | 42.6 | 45.8 | 49.9 | 55.7 | 60.5 | 64.9 | 65.1 | 60.1 | 51.9 | 44.4 | 39.8 | 51.7 |
| Highest Mean Temperature (F) | 44.8 | 47.2 | 49.8 | 53.6 | 59.6 | 64.4 | 68.4 | 67.9 | 63.3 | 55.3 | 48.6 | 43.7 | 68.4 |
| Year Highest Occurred | 1994 | 1991 | 1986 | 1994 | 1993 | 1992 | 1998 | 1977 | 1998 | 1988 | 1995 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 33.2 | 35.4 | 40.1 | 45.6 | 52.6 | 56.6 | 61.5 | 60.9 | 56.1 | 48.4 | 35.9 | 34.3 | 33.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1974 | 1971 | 1993 | 1973 | 1972 | 1972 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 32.9 | 34.3 | 36.3 | 39.0 | 44.2 | 48.7 | 51.9 | 51.7 | 47.3 | 41.7 | 37.0 | 33.2 | 41.5 |
| Highest Mean Min. Temperature (F) | 39.1 | 38.5 | 40.0 | 44.5 | 49.1 | 51.4 | 56.2 | 54.6 | 50.8 | 47.6 | 41.0 | 37.7 | 56.2 |
| Year Highest Occurred | 1994 | 1991 | 1986 | 1994 | 1993 | 1992 | 1998 | 1997 | 1990 | 1988 | 1999 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | 24.3 | 26.5 | 31.0 | 34.4 | 40.9 | 45.6 | 49.5 | 47.6 | 44.1 | 37.0 | 29.0 | 27.5 | 24.3 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1984 | 1984 | 1979 | 1977 | 1973 | 1985 | 1972 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 5.53 | 4.67 | 4.23 | 3.09 | 2.14 | 1.80 | 0.88 | 1.14 | 1.71 | 3.28 | 6.11 | 5.93 | 40.51 |
| Highest Precipitation (in.) | 11.38 | 10.05 | 9.06 | 6.88 | 4.55 | 4.11 | 2.71 | 3.92 | 5.39 | 7.37 | 10.44 | 10.58 | 11.38 |
| Year Highest Occurred | 1990 | 1999 | 1997 | 1991 | 1984 | 1984 | 1983 | 1975 | 1978 | 1975 | 1995 | 1979 | 1990 |
| Lowest Precipitation (in.) | 0.46 | 0.23 | 1.46 | 0.99 | 0.19 | 0.23 | 0.00 | 0.05 | 0.00 | 0.47 | 1.10 | 1.69 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1977 | 1992 | 1987 | 1985 | 1974 | 1990 | 1978 | 1976 | 1985 | 1985 |
| Heating Degree Days (F) | 779. | 627. | 597. | 453. | 291. | 149. | 63. | 62. | 165. | 406. | 617. | 782. | 4991. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 13. | 59. | 62. | 17. | 0. | 0. | 0. | 153. |