| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 38.7 | 43.5 | 49.4 | 56.7 | 63.3 | 67.8 | 73.8 | 74.7 | 69.1 | 57.8 | 44.8 | 38.6 | 56.5 |
| Highest Mean Max. Temperature (F) | 45.7 | 50.4 | 60.0 | 60.9 | 69.4 | 73.3 | 83.4 | 79.3 | 77.3 | 64.6 | 51.0 | 42.8 | 83.4 |
| Year Highest Occurred | 1981 | 1977 | 1992 | 1987 | 1992 | 1992 | 1985 | 1986 | 1974 | 1987 | 1976 | 1976 | 1985 |
| Lowest Mean Max. Temperature (F) | 32.9 | 36.7 | 43.9 | 51.0 | 56.5 | 62.0 | 66.4 | 67.9 | 61.9 | 51.7 | 37.1 | 32.9 | 32.9 |
| Year Lowest Occurred | 1979 | 1990 | 1971 | 1972 | 1996 | 1981 | 1993 | 1976 | 1978 | 1990 | 1985 | 1990 | 1979 |
| Mean Temperature (F) | 33.4 | 36.5 | 40.8 | 46.5 | 52.8 | 57.6 | 62.4 | 63.0 | 57.9 | 49.2 | 39.5 | 34.2 | 47.8 |
| Highest Mean Temperature (F) | 39.6 | 41.6 | 48.1 | 49.8 | 57.5 | 61.8 | 67.3 | 66.3 | 62.1 | 52.6 | 43.0 | 38.0 | 67.3 |
| Year Highest Occurred | 1994 | 1992 | 1992 | 1987 | 1993 | 1992 | 1985 | 1977 | 1995 | 1993 | 1987 | 1989 | 1985 |
| Lowest Mean Temperature (F) | 25.2 | 29.5 | 36.2 | 42.1 | 48.6 | 54.1 | 58.9 | 59.1 | 53.9 | 45.5 | 30.3 | 27.9 | 25.2 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1996 | 1981 | 1993 | 1995 | 1972 | 1990 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 28.0 | 29.4 | 32.2 | 36.3 | 42.2 | 47.3 | 50.9 | 51.3 | 46.7 | 40.5 | 34.1 | 29.7 | 39.1 |
| Highest Mean Min. Temperature (F) | 35.3 | 34.7 | 37.1 | 40.5 | 46.4 | 50.4 | 54.8 | 53.7 | 49.7 | 45.1 | 38.6 | 33.7 | 54.8 |
| Year Highest Occurred | 1994 | 1983 | 1983 | 1994 | 1993 | 1998 | 1998 | 1977 | 1979 | 1988 | 1987 | 1979 | 1998 |
| Lowest Mean Min. Temperature (F) | 17.5 | 20.8 | 27.8 | 32.3 | 37.8 | 43.7 | 48.0 | 48.6 | 43.9 | 37.6 | 23.6 | 22.8 | 17.5 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1999 | 1999 | 1976 | 1976 | 1973 | 1972 | 1972 | 1985 | 1990 | 1979 |
| Mean Precipitation (in.) | 14.34 | 11.05 | 9.75 | 6.42 | 5.06 | 3.69 | 2.64 | 2.11 | 4.27 | 9.09 | 16.47 | 15.70 | 100.59 |
| Highest Precipitation (in.) | 27.67 | 20.59 | 22.09 | 12.65 | 12.34 | 9.54 | 8.88 | 5.99 | 11.22 | 24.10 | 31.34 | 28.48 | 31.34 |
| Year Highest Occurred | 1974 | 1982 | 1997 | 1981 | 1984 | 1981 | 1983 | 1991 | 1997 | 1975 | 1990 | 1979 | 1990 |
| Lowest Precipitation (in.) | 1.63 | 0.60 | 1.17 | 2.41 | 1.40 | 1.53 | 0.00 | 0.16 | 0.26 | 0.65 | 3.98 | 3.28 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1983 | 1995 | 1982 | 1985 | 1998 | 1975 | 1987 | 1979 | 1985 | 1985 |
| Heating Degree Days (F) | 981. | 800. | 750. | 555. | 380. | 228. | 116. | 102. | 224. | 493. | 767. | 957. | 6353. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 5. | 33. | 39. | 13. | 0. | 0. | 0. | 90. |