| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 32.8 | 40.0 | 51.7 | 62.4 | 71.0 | 78.9 | 87.7 | 87.2 | 77.9 | 64.7 | 45.6 | 34.1 | 61.2 |
| Highest Mean Max. Temperature (F) | 39.3 | 50.1 | 64.2 | 71.4 | 80.3 | 85.6 | 93.7 | 93.8 | 87.2 | 75.2 | 54.0 | 41.2 | 93.8 |
| Year Highest Occurred | 1990 | 1992 | 1992 | 1987 | 1992 | 1974 | 1998 | 1971 | 1990 | 1988 | 1976 | 1989 | 1971 |
| Lowest Mean Max. Temperature (F) | 20.7 | 29.1 | 42.9 | 53.4 | 65.0 | 73.4 | 76.3 | 79.9 | 68.6 | 58.9 | 33.7 | 22.5 | 20.7 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1977 | 1993 | 1993 | 1976 | 1986 | 1984 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 23.8 | 29.6 | 39.2 | 46.9 | 54.3 | 61.3 | 67.9 | 67.2 | 58.6 | 47.9 | 35.5 | 25.3 | 46.5 |
| Highest Mean Temperature (F) | 31.8 | 39.1 | 46.2 | 52.1 | 59.3 | 66.3 | 73.2 | 72.5 | 64.6 | 55.7 | 40.4 | 33.1 | 73.2 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1992 | 1977 | 1998 | 1971 | 1990 | 1988 | 1999 | 1977 | 1998 |
| Lowest Mean Temperature (F) | 8.9 | 16.8 | 30.4 | 41.4 | 51.0 | 57.8 | 58.2 | 62.7 | 53.4 | 44.2 | 24.9 | 11.5 | 8.9 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1978 | 1993 | 1993 | 1980 | 1985 | 1984 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 14.7 | 19.2 | 26.6 | 31.4 | 37.5 | 43.7 | 48.1 | 47.1 | 39.3 | 31.1 | 25.4 | 16.4 | 31.7 |
| Highest Mean Min. Temperature (F) | 24.3 | 28.0 | 31.4 | 35.1 | 41.6 | 48.4 | 54.9 | 51.4 | 43.8 | 36.7 | 30.3 | 27.0 | 54.9 |
| Year Highest Occurred | 1981 | 1992 | 1986 | 1990 | 1994 | 1977 | 1975 | 1983 | 1998 | 1975 | 1972 | 1977 | 1975 |
| Lowest Mean Min. Temperature (F) | -3.0 | 4.5 | 17.8 | 27.7 | 34.0 | 41.0 | 40.0 | 42.3 | 34.4 | 26.9 | 16.1 | 0.5 | -3.0 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1999 | 1982 | 1991 | 1993 | 1995 | 1999 | 1998 | 1985 | 1985 | 1979 |
| Mean Precipitation (in.) | 3.31 | 2.46 | 2.01 | 1.58 | 1.67 | 1.28 | 0.64 | 0.62 | 0.84 | 1.21 | 3.03 | 3.60 | 22.25 |
| Highest Precipitation (in.) | 5.57 | 6.86 | 6.14 | 5.08 | 7.18 | 3.22 | 2.01 | 2.69 | 2.81 | 3.09 | 7.36 | 7.21 | 7.36 |
| Year Highest Occurred | 1995 | 1999 | 1983 | 1978 | 1998 | 1993 | 1997 | 1984 | 1986 | 1975 | 1988 | 1973 | 1988 |
| Lowest Precipitation (in.) | 0.29 | 0.66 | 0.11 | 0.17 | 0.13 | 0.14 | 0.03 | 0.00 | 0.00 | 0.00 | 0.17 | 0.22 | 0.00 |
| Year Lowest Occurred | 1985 | 1977 | 1994 | 1977 | 1974 | 1986 | 1979 | 1994 | 1999 | 1988 | 1976 | 1976 | 1994 |
| Heating Degree Days (F) | 1279. | 992. | 801. | 543. | 336. | 147. | 54. | 54. | 219. | 530. | 885. | 1233. | 7073. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 35. | 143. | 121. | 26. | 0. | 0. | 0. | 327. |