| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 29.7 | 37.6 | 54.3 | 66.2 | 76.6 | 88.2 | 94.3 | 91.8 | 81.7 | 67.2 | 47.4 | 33.6 | 64.1 |
| Highest Mean Max. Temperature (F) | 45.0 | 52.4 | 64.3 | 75.2 | 83.1 | 94.5 | 99.2 | 94.6 | 87.8 | 75.9 | 56.6 | 44.4 | 99.2 |
| Year Highest Occurred | 1981 | 1981 | 1972 | 1992 | 1994 | 1977 | 1989 | 1996 | 1979 | 1988 | 1976 | 1980 | 1989 |
| Lowest Mean Max. Temperature (F) | 13.1 | 21.0 | 42.4 | 58.4 | 67.8 | 82.0 | 90.3 | 87.9 | 76.5 | 61.7 | 33.3 | 21.8 | 13.1 |
| Year Lowest Occurred | 1973 | 1985 | 1979 | 1983 | 1995 | 1975 | 1992 | 1993 | 1985 | 1981 | 1971 | 1972 | 1973 |
| Mean Temperature (F) | 16.8 | 23.7 | 39.6 | 50.1 | 59.6 | 69.2 | 75.2 | 73.1 | 63.4 | 50.2 | 34.4 | 21.2 | 48.0 |
| Highest Mean Temperature (F) | 29.4 | 35.9 | 47.4 | 57.2 | 64.3 | 74.1 | 78.4 | 76.9 | 68.0 | 55.4 | 38.6 | 31.4 | 78.4 |
| Year Highest Occurred | 1981 | 1995 | 1986 | 1992 | 1994 | 1977 | 1994 | 1983 | 1998 | 1988 | 1995 | 1977 | 1994 |
| Lowest Mean Temperature (F) | -0.7 | 6.0 | 30.3 | 43.2 | 54.9 | 64.2 | 71.1 | 69.9 | 59.4 | 46.8 | 24.0 | 9.3 | -0.7 |
| Year Lowest Occurred | 1973 | 1985 | 1984 | 1975 | 1995 | 1975 | 1993 | 1993 | 1971 | 1982 | 1971 | 1972 | 1973 |
| Mean Min. Temperature (F) | 3.9 | 9.8 | 24.8 | 34.0 | 42.6 | 50.2 | 56.1 | 54.4 | 45.1 | 33.2 | 21.3 | 8.8 | 32.0 |
| Highest Mean Min. Temperature (F) | 15.5 | 23.6 | 32.1 | 39.1 | 46.9 | 54.9 | 60.2 | 61.1 | 50.1 | 39.1 | 25.5 | 18.4 | 61.1 |
| Year Highest Occurred | 1995 | 2000 | 1986 | 1992 | 1992 | 1986 | 1998 | 1983 | 1998 | 1972 | 1998 | 1977 | 1983 |
| Lowest Mean Min. Temperature (F) | -14.6 | -9.6 | 17.2 | 27.4 | 38.5 | 46.3 | 50.7 | 49.4 | 40.0 | 26.3 | 14.8 | -3.2 | -14.6 |
| Year Lowest Occurred | 1973 | 1974 | 1984 | 1975 | 1975 | 1975 | 1993 | 1975 | 1971 | 1999 | 1971 | 1972 | 1973 |
| Mean Precipitation (in.) | 0.40 | 0.34 | 0.58 | 0.78 | 0.81 | 0.44 | 0.70 | 0.75 | 0.76 | 1.00 | 0.47 | 0.35 | 7.38 |
| Highest Precipitation (in.) | 1.49 | 1.02 | 1.77 | 2.32 | 2.23 | 1.32 | 2.04 | 2.12 | 3.17 | 3.68 | 1.37 | 1.15 | 3.68 |
| Year Highest Occurred | 1978 | 1990 | 1979 | 1999 | 1995 | 1990 | 1992 | 1987 | 1997 | 1981 | 1978 | 1984 | 1981 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.06 | 0.00 | 0.00 | 0.07 | 0.08 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1976 | 1972 | 1972 | 1982 | 1974 | 1988 | 2000 | 1974 | 1987 | 1995 | 1995 | 1995 | 1976 |
| Heating Degree Days (F) | 1495. | 1156. | 789. | 452. | 193. | 33. | 0. | 4. | 106. | 459. | 920. | 1357. | 6964. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 5. | 26. | 158. | 317. | 254. | 57. | 0. | 0. | 0. | 817. |