| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 38.2 | 43.0 | 49.6 | 57.3 | 64.8 | 70.0 | 76.5 | 77.7 | 70.9 | 58.1 | 44.2 | 38.2 | 57.4 |
| Highest Mean Max. Temperature (F) | 44.5 | 49.0 | 61.6 | 63.4 | 71.6 | 76.1 | 86.0 | 85.1 | 78.4 | 65.7 | 49.4 | 43.2 | 86.0 |
| Year Highest Occurred | 1994 | 1977 | 1992 | 1980 | 1995 | 1978 | 1985 | 1986 | 1974 | 1987 | 1976 | 1976 | 1985 |
| Lowest Mean Max. Temperature (F) | 30.2 | 36.4 | 43.6 | 51.3 | 57.8 | 63.3 | 67.2 | 70.2 | 62.5 | 52.3 | 33.4 | 31.9 | 30.2 |
| Year Lowest Occurred | 1993 | 1989 | 1971 | 1975 | 1996 | 1975 | 1993 | 1976 | 1978 | 1990 | 1985 | 1990 | 1993 |
| Mean Temperature (F) | 33.6 | 36.7 | 41.5 | 47.5 | 54.4 | 59.7 | 64.8 | 65.8 | 59.8 | 49.9 | 39.7 | 34.3 | 49.0 |
| Highest Mean Temperature (F) | 40.6 | 41.9 | 49.6 | 51.5 | 59.6 | 64.5 | 69.9 | 70.5 | 64.2 | 53.8 | 44.4 | 39.1 | 70.5 |
| Year Highest Occurred | 1994 | 1992 | 1992 | 1980 | 1993 | 1992 | 1985 | 1977 | 1974 | 1987 | 1987 | 1976 | 1977 |
| Lowest Mean Temperature (F) | 25.6 | 29.1 | 37.2 | 42.8 | 49.5 | 55.9 | 60.1 | 60.3 | 55.4 | 46.1 | 28.7 | 27.7 | 25.6 |
| Year Lowest Occurred | 1993 | 1989 | 1971 | 1975 | 1996 | 1999 | 1993 | 1995 | 1992 | 1990 | 1985 | 1990 | 1993 |
| Mean Min. Temperature (F) | 28.9 | 30.4 | 33.4 | 37.7 | 43.9 | 49.4 | 53.1 | 53.8 | 48.6 | 41.7 | 35.1 | 30.4 | 40.5 |
| Highest Mean Min. Temperature (F) | 36.6 | 35.5 | 37.5 | 41.7 | 48.5 | 53.1 | 56.9 | 57.7 | 51.3 | 44.7 | 39.9 | 35.4 | 57.7 |
| Year Highest Occurred | 1994 | 1992 | 1992 | 1994 | 1993 | 1992 | 1998 | 1977 | 1979 | 1979 | 1987 | 1973 | 1977 |
| Lowest Mean Min. Temperature (F) | 20.9 | 21.9 | 29.6 | 33.6 | 38.9 | 47.2 | 50.5 | 49.9 | 45.4 | 39.7 | 23.9 | 23.3 | 20.9 |
| Year Lowest Occurred | 1993 | 1989 | 1985 | 1982 | 1999 | 1999 | 1999 | 1995 | 1984 | 1984 | 1985 | 1983 | 1993 |
| Mean Precipitation (in.) | 11.38 | 8.45 | 7.12 | 4.72 | 3.30 | 2.49 | 1.85 | 1.74 | 3.23 | 7.47 | 14.36 | 12.76 | 78.87 |
| Highest Precipitation (in.) | 23.95 | 14.58 | 16.35 | 10.38 | 7.96 | 6.70 | 6.76 | 4.30 | 9.16 | 16.82 | 38.46 | 25.83 | 38.46 |
| Year Highest Occurred | 1974 | 1995 | 1997 | 1981 | 1984 | 1981 | 1983 | 1990 | 1972 | 1985 | 1990 | 1975 | 1990 |
| Lowest Precipitation (in.) | 0.74 | 0.13 | 0.74 | 1.52 | 0.77 | 0.66 | 0.05 | 0.03 | 0.16 | 0.39 | 2.76 | 1.74 | 0.03 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1998 | 1995 | 1996 | 1984 | 1986 | 1990 | 1987 | 1979 | 1985 | 1986 |
| Heating Degree Days (F) | 974. | 792. | 728. | 525. | 335. | 179. | 82. | 72. | 192. | 469. | 760. | 952. | 6060. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 5. | 20. | 76. | 94. | 36. | 0. | 0. | 0. | 231. |