| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 37.3 | 43.1 | 49.4 | 58.6 | 68.7 | 80.0 | 87.4 | 86.0 | 76.3 | 64.1 | 47.5 | 39.8 | 61.5 |
| Highest Mean Max. Temperature (F) | 47.2 | 51.9 | 57.8 | 66.3 | 75.2 | 86.3 | 92.4 | 92.2 | 83.8 | 68.6 | 61.2 | 49.4 | 92.4 |
| Year Highest Occurred | 1981 | 1999 | 1986 | 1981 | 1994 | 1988 | 1980 | 1995 | 1998 | 1975 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 23.3 | 30.0 | 42.5 | 48.5 | 58.4 | 71.9 | 81.2 | 80.3 | 69.1 | 57.6 | 33.5 | 24.1 | 23.3 |
| Year Lowest Occurred | 1979 | 1978 | 1980 | 1983 | 1995 | 1983 | 1992 | 1992 | 1973 | 1984 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 24.5 | 29.6 | 35.3 | 43.9 | 54.3 | 65.0 | 71.7 | 70.3 | 60.3 | 48.1 | 34.1 | 26.8 | 47.0 |
| Highest Mean Temperature (F) | 31.1 | 37.2 | 42.7 | 51.5 | 59.1 | 70.5 | 75.4 | 74.8 | 67.0 | 51.0 | 43.1 | 34.4 | 75.4 |
| Year Highest Occurred | 1990 | 1992 | 1986 | 1981 | 1994 | 1988 | 1980 | 1995 | 1998 | 1979 | 1999 | 1980 | 1980 |
| Lowest Mean Temperature (F) | 13.2 | 19.0 | 30.5 | 36.6 | 48.1 | 59.7 | 67.2 | 65.5 | 55.6 | 44.3 | 22.8 | 14.3 | 13.2 |
| Year Lowest Occurred | 1979 | 1989 | 1980 | 1983 | 1995 | 1983 | 1992 | 1974 | 1973 | 1984 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 11.6 | 16.1 | 21.2 | 29.1 | 39.8 | 50.0 | 55.9 | 54.5 | 44.2 | 32.1 | 20.7 | 13.7 | 32.4 |
| Highest Mean Min. Temperature (F) | 19.2 | 23.3 | 27.6 | 36.7 | 44.5 | 54.7 | 59.3 | 58.1 | 50.2 | 35.8 | 27.5 | 20.0 | 59.3 |
| Year Highest Occurred | 1983 | 1992 | 1986 | 1981 | 1987 | 1988 | 1998 | 1982 | 1998 | 1979 | 1998 | 1999 | 1998 |
| Lowest Mean Min. Temperature (F) | 2.7 | 6.1 | 16.3 | 24.7 | 35.6 | 45.5 | 51.8 | 48.7 | 37.2 | 26.8 | 12.0 | 4.5 | 2.7 |
| Year Lowest Occurred | 1977 | 1989 | 1996 | 1983 | 1983 | 1985 | 1971 | 1974 | 1974 | 1976 | 1985 | 1983 | 1977 |
| Mean Precipitation (in.) | 0.44 | 0.39 | 1.57 | 2.19 | 3.39 | 3.00 | 2.55 | 2.25 | 1.07 | 0.78 | 0.65 | 0.50 | 18.78 |
| Highest Precipitation (in.) | 1.37 | 0.91 | 4.50 | 4.43 | 8.46 | 7.06 | 5.80 | 4.16 | 4.35 | 2.03 | 1.96 | 1.39 | 8.46 |
| Year Highest Occurred | 1973 | 1993 | 1979 | 1977 | 1995 | 1986 | 1982 | 1999 | 1973 | 1981 | 1983 | 1973 | 1995 |
| Lowest Precipitation (in.) | 0.07 | 0.01 | 0.07 | 0.33 | 0.92 | 0.88 | 0.99 | 0.51 | 0.08 | 0.04 | 0.09 | 0.00 | 0.00 |
| Year Lowest Occurred | 1987 | 1983 | 1972 | 1992 | 1974 | 1976 | 1984 | 1985 | 1977 | 1988 | 1989 | 1976 | 1976 |
| Heating Degree Days (F) | 1257. | 992. | 921. | 635. | 342. | 88. | 9. | 22. | 187. | 524. | 928. | 1187. | 7092. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 8. | 89. | 215. | 185. | 45. | 0. | 0. | 0. | 542. |