| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 28.8 | 36.2 | 46.2 | 57.5 | 66.6 | 73.5 | 81.7 | 81.9 | 72.5 | 56.5 | 37.5 | 27.4 | 55.5 |
| Highest Mean Max. Temperature (F) | 35.2 | 44.3 | 57.2 | 65.8 | 72.8 | 81.5 | 90.2 | 89.2 | 80.8 | 64.7 | 43.6 | 33.8 | 90.2 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1977 | 1992 | 1992 | 1985 | 1971 | 1990 | 1987 | 1987 | 1979 | 1985 |
| Lowest Mean Max. Temperature (F) | 19.1 | 30.7 | 38.4 | 51.4 | 60.0 | 66.7 | 72.6 | 74.2 | 63.3 | 50.6 | 26.6 | 18.8 | 18.8 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1984 | 1981 | 1993 | 1976 | 1978 | 1984 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 21.7 | 27.5 | 35.7 | 44.4 | 53.0 | 59.9 | 66.4 | 66.6 | 57.5 | 44.5 | 31.3 | 21.3 | 44.2 |
| Highest Mean Temperature (F) | 29.7 | 35.5 | 43.0 | 49.4 | 57.9 | 66.8 | 71.9 | 71.8 | 64.2 | 49.9 | 36.3 | 29.3 | 71.9 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1977 | 1993 | 1992 | 1985 | 1986 | 1998 | 1988 | 1987 | 1979 | 1985 |
| Lowest Mean Temperature (F) | 8.8 | 19.9 | 25.7 | 37.3 | 48.5 | 54.5 | 60.8 | 60.5 | 50.2 | 39.0 | 18.6 | 10.5 | 8.8 |
| Year Lowest Occurred | 1979 | 1985 | 1971 | 1972 | 1984 | 1981 | 1983 | 1995 | 1971 | 1971 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 14.5 | 18.8 | 25.2 | 31.3 | 39.3 | 46.3 | 51.0 | 51.3 | 42.5 | 32.5 | 25.0 | 15.2 | 32.7 |
| Highest Mean Min. Temperature (F) | 24.5 | 27.7 | 29.6 | 36.6 | 44.4 | 52.0 | 56.3 | 56.2 | 47.8 | 36.2 | 31.4 | 24.7 | 56.3 |
| Year Highest Occurred | 1981 | 1998 | 1977 | 1994 | 1998 | 1992 | 1998 | 1977 | 1998 | 1988 | 1972 | 1979 | 1998 |
| Lowest Mean Min. Temperature (F) | -1.6 | 8.6 | 12.9 | 23.2 | 36.0 | 40.0 | 45.5 | 46.3 | 33.5 | 27.1 | 10.6 | 2.1 | -1.6 |
| Year Lowest Occurred | 1979 | 1985 | 1971 | 1972 | 1974 | 1976 | 1971 | 1995 | 1971 | 1971 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 3.73 | 2.69 | 1.68 | 1.03 | 1.05 | 1.06 | 0.84 | 0.79 | 0.83 | 1.48 | 3.47 | 4.07 | 22.72 |
| Highest Precipitation (in.) | 8.39 | 6.73 | 4.58 | 2.46 | 3.16 | 3.66 | 2.38 | 3.08 | 2.44 | 4.60 | 8.62 | 8.58 | 8.62 |
| Year Highest Occurred | 1974 | 1972 | 1972 | 1978 | 1998 | 1992 | 1993 | 1976 | 1985 | 1997 | 1995 | 1996 | 1995 |
| Lowest Precipitation (in.) | 0.43 | 0.26 | 0.36 | 0.00 | 0.01 | 0.08 | 0.00 | 0.00 | 0.00 | 0.01 | 0.64 | 0.68 | 0.00 |
| Year Lowest Occurred | 1977 | 1993 | 1979 | 1973 | 1992 | 1976 | 1971 | 1985 | 1976 | 1987 | 1976 | 1985 | 1973 |
| Heating Degree Days (F) | 1344. | 1050. | 909. | 618. | 375. | 189. | 78. | 66. | 263. | 636. | 1013. | 1355. | 7896. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 36. | 120. | 115. | 38. | 0. | 0. | 0. | 311. |