| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 28.3 | 30.3 | 34.7 | 42.1 | 52.8 | 60.8 | 65.2 | 64.2 | 54.4 | 41.7 | 33.9 | 30.6 | 44.9 |
| Highest Mean Max. Temperature (F) | 39.4 | 37.7 | 40.6 | 46.9 | 59.6 | 66.7 | 68.2 | 68.7 | 58.1 | 44.9 | 39.2 | 38.4 | 68.7 |
| Year Highest Occurred | 1977 | 1977 | 1984 | 1994 | 1997 | 1984 | 1984 | 1984 | 1979 | 1993 | 1979 | 1985 | 1984 |
| Lowest Mean Max. Temperature (F) | 16.2 | 22.8 | 24.8 | 36.0 | 45.6 | 56.4 | 61.6 | 58.9 | 51.4 | 36.6 | 26.6 | 19.3 | 16.2 |
| Year Lowest Occurred | 1971 | 1999 | 1972 | 1985 | 1971 | 1972 | 1982 | 1986 | 1988 | 1996 | 1990 | 1980 | 1971 |
| Mean Temperature (F) | 23.4 | 25.2 | 29.1 | 35.1 | 43.3 | 50.7 | 55.5 | 54.9 | 47.2 | 36.7 | 29.4 | 25.6 | 38.0 |
| Highest Mean Temperature (F) | 37.5 | 36.2 | 35.1 | 39.2 | 47.9 | 54.7 | 57.6 | 58.9 | 51.2 | 39.7 | 36.6 | 34.1 | 58.9 |
| Year Highest Occurred | 1977 | 1977 | 1981 | 1993 | 1993 | 1984 | 1993 | 1984 | 1995 | 1979 | 2000 | 1985 | 1984 |
| Lowest Mean Temperature (F) | 8.8 | 15.5 | 17.3 | 27.7 | 38.3 | 47.5 | 53.4 | 50.7 | 43.6 | 30.3 | 21.7 | 14.8 | 8.8 |
| Year Lowest Occurred | 1971 | 1999 | 1972 | 1972 | 1971 | 1985 | 1971 | 1986 | 1992 | 1996 | 1975 | 1980 | 1971 |
| Mean Min. Temperature (F) | 18.5 | 20.0 | 23.4 | 28.1 | 33.8 | 40.6 | 45.8 | 45.5 | 40.0 | 31.6 | 24.9 | 20.6 | 31.1 |
| Highest Mean Min. Temperature (F) | 35.5 | 34.6 | 31.7 | 32.2 | 38.0 | 44.6 | 48.2 | 49.4 | 45.9 | 35.8 | 34.0 | 29.8 | 49.4 |
| Year Highest Occurred | 1977 | 1977 | 1981 | 1993 | 1993 | 1990 | 1981 | 1989 | 1995 | 1979 | 2000 | 1985 | 1989 |
| Lowest Mean Min. Temperature (F) | 1.3 | 7.7 | 9.6 | 18.9 | 30.9 | 36.7 | 43.0 | 41.0 | 35.0 | 24.0 | 15.9 | 10.2 | 1.3 |
| Year Lowest Occurred | 1971 | 1979 | 1971 | 1972 | 1982 | 1983 | 1983 | 1981 | 1983 | 1996 | 1975 | 1980 | 1971 |
| Mean Precipitation (in.) | 6.98 | 5.00 | 4.43 | 5.34 | 3.81 | 1.88 | 1.68 | 3.64 | 8.64 | 7.78 | 7.03 | 7.82 | 64.03 |
| Highest Precipitation (in.) | 19.67 | 14.39 | 10.74 | 20.00 | 9.42 | 3.97 | 4.13 | 7.89 | 20.71 | 21.74 | 19.45 | 19.40 | 21.74 |
| Year Highest Occurred | 1981 | 1988 | 1988 | 1998 | 1998 | 2000 | 1980 | 1993 | 1995 | 1986 | 1979 | 2000 | 1986 |
| Lowest Precipitation (in.) | 0.51 | 0.00 | 0.36 | 1.45 | 0.27 | 0.40 | 0.62 | 0.22 | 1.34 | 1.42 | 0.70 | 0.96 | 0.00 |
| Year Lowest Occurred | 1982 | 1982 | 1989 | 1981 | 1984 | 1990 | 1988 | 1982 | 1992 | 1981 | 1990 | 1972 | 1982 |
| Heating Degree Days (F) | 1289. | 1117. | 1115. | 897. | 673. | 429. | 294. | 316. | 534. | 878. | 1067. | 1222. | 9831. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. | 0. |