| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 40.5 | 44.5 | 49.5 | 56.5 | 65.7 | 75.6 | 84.4 | 83.6 | 76.4 | 65.3 | 49.7 | 41.6 | 61.1 |
| Highest Mean Max. Temperature (F) | 49.7 | 57.1 | 57.9 | 66.4 | 76.9 | 81.9 | 90.0 | 90.1 | 83.9 | 75.1 | 60.2 | 48.1 | 90.1 |
| Year Highest Occurred | 1986 | 1991 | 1997 | 1987 | 1992 | 1977 | 1996 | 1981 | 1974 | 1988 | 1995 | 1976 | 1981 |
| Lowest Mean Max. Temperature (F) | 32.8 | 36.4 | 42.2 | 45.0 | 54.3 | 68.9 | 79.3 | 75.1 | 65.5 | 56.5 | 39.6 | 34.5 | 32.8 |
| Year Lowest Occurred | 1993 | 1993 | 1991 | 1975 | 1998 | 1980 | 1983 | 1976 | 1986 | 1984 | 1994 | 1972 | 1993 |
| Mean Temperature (F) | 29.2 | 32.7 | 37.6 | 42.6 | 49.7 | 57.2 | 63.1 | 61.9 | 55.8 | 46.9 | 36.2 | 29.9 | 45.2 |
| Highest Mean Temperature (F) | 38.0 | 39.7 | 42.6 | 48.4 | 57.2 | 62.3 | 68.2 | 65.7 | 59.4 | 52.3 | 42.7 | 36.2 | 68.2 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1987 | 1992 | 1977 | 1996 | 1988 | 1991 | 1988 | 1995 | 1981 | 1996 |
| Lowest Mean Temperature (F) | 20.9 | 24.8 | 31.1 | 33.9 | 42.4 | 51.6 | 57.5 | 55.0 | 49.6 | 42.3 | 28.8 | 20.4 | 20.4 |
| Year Lowest Occurred | 1993 | 1990 | 1985 | 1975 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1985 | 1990 | 1990 |
| Mean Min. Temperature (F) | 17.8 | 20.9 | 25.6 | 28.6 | 33.6 | 38.7 | 41.8 | 40.2 | 35.2 | 28.5 | 22.7 | 18.2 | 29.3 |
| Highest Mean Min. Temperature (F) | 26.2 | 26.8 | 31.0 | 32.9 | 37.4 | 42.6 | 46.4 | 44.0 | 40.0 | 31.6 | 27.9 | 26.7 | 46.4 |
| Year Highest Occurred | 1986 | 1992 | 1978 | 1990 | 1992 | 1977 | 1996 | 1988 | 1998 | 1979 | 1981 | 1981 | 1996 |
| Lowest Mean Min. Temperature (F) | 9.0 | 11.1 | 19.7 | 22.8 | 28.0 | 33.9 | 35.7 | 34.9 | 31.7 | 24.7 | 15.3 | 5.6 | 5.6 |
| Year Lowest Occurred | 1993 | 1990 | 1985 | 1975 | 1976 | 1979 | 1983 | 1976 | 1972 | 1971 | 1985 | 1990 | 1990 |
| Mean Precipitation (in.) | 4.17 | 3.87 | 3.61 | 1.23 | 1.12 | 0.54 | 0.34 | 0.43 | 0.78 | 1.22 | 2.50 | 3.28 | 23.09 |
| Highest Precipitation (in.) | 11.75 | 11.94 | 13.22 | 3.24 | 3.41 | 1.45 | 1.79 | 2.05 | 2.85 | 3.51 | 9.74 | 12.13 | 13.22 |
| Year Highest Occurred | 1993 | 1986 | 1995 | 1996 | 1996 | 1993 | 1992 | 1990 | 1986 | 1989 | 1981 | 1996 | 1995 |
| Lowest Precipitation (in.) | 0.08 | 0.04 | 0.23 | 0.09 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.18 | 0.00 | 0.00 |
| Year Lowest Occurred | 1991 | 1988 | 1988 | 1977 | 1999 | 1986 | 2000 | 2000 | 1995 | 1995 | 1995 | 1989 | 1999 |
| Heating Degree Days (F) | 1111. | 905. | 852. | 674. | 477. | 245. | 110. | 133. | 283. | 561. | 864. | 1088. | 7303. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 10. | 52. | 37. | 7. | 0. | 0. | 0. | 106. |