| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 21.6 | 24.8 | 33.7 | 47.1 | 62.3 | 70.8 | 75.9 | 73.6 | 63.3 | 51.6 | 36.8 | 26.0 | 49.0 |
| Highest Mean Max. Temperature (F) | 30.4 | 35.3 | 40.3 | 57.6 | 71.3 | 76.9 | 82.3 | 78.3 | 67.8 | 57.6 | 43.5 | 33.2 | 82.3 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1995 | 1988 | 1983 | 1971 | 1973 | 1981 | 1994 | 1988 |
| Lowest Mean Max. Temperature (F) | 12.2 | 15.7 | 26.9 | 39.0 | 54.1 | 66.1 | 68.0 | 68.4 | 58.0 | 46.7 | 29.2 | 17.6 | 12.2 |
| Year Lowest Occurred | 1994 | 1979 | 1996 | 1996 | 1997 | 1982 | 1992 | 1982 | 1974 | 1988 | 1995 | 1989 | 1994 |
| Mean Temperature (F) | 14.6 | 17.0 | 25.7 | 38.3 | 51.6 | 60.1 | 65.6 | 64.2 | 54.8 | 44.0 | 31.0 | 19.9 | 40.6 |
| Highest Mean Temperature (F) | 23.5 | 30.3 | 33.6 | 46.4 | 57.8 | 66.1 | 70.3 | 69.0 | 59.1 | 50.3 | 37.7 | 27.6 | 70.3 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1995 | 1988 | 1983 | 1994 | 1971 | 1999 | 1994 | 1988 |
| Lowest Mean Temperature (F) | 5.0 | 6.6 | 17.9 | 32.3 | 45.0 | 55.0 | 59.5 | 58.9 | 48.7 | 39.1 | 24.3 | 11.0 | 5.0 |
| Year Lowest Occurred | 1977 | 1979 | 1972 | 1975 | 1983 | 1982 | 1992 | 1977 | 1974 | 1980 | 1995 | 1976 | 1977 |
| Mean Min. Temperature (F) | 7.6 | 9.1 | 17.6 | 29.5 | 40.8 | 49.3 | 55.2 | 54.7 | 46.2 | 36.4 | 25.1 | 13.8 | 32.1 |
| Highest Mean Min. Temperature (F) | 16.7 | 25.3 | 26.9 | 35.3 | 46.0 | 55.3 | 60.7 | 60.4 | 51.8 | 43.2 | 31.9 | 23.1 | 60.7 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1998 | 1991 | 1995 | 1999 | 1995 | 1994 | 1971 | 1999 | 1997 | 1999 |
| Lowest Mean Min. Temperature (F) | -3.2 | -2.5 | 8.7 | 23.7 | 34.8 | 43.8 | 50.9 | 49.1 | 39.4 | 31.3 | 19.3 | 2.2 | -3.2 |
| Year Lowest Occurred | 1977 | 1979 | 1972 | 1975 | 1983 | 1982 | 1992 | 1977 | 1974 | 1976 | 1995 | 1976 | 1977 |
| Mean Precipitation (in.) | 4.26 | 2.28 | 2.45 | 1.71 | 2.49 | 2.84 | 2.97 | 2.75 | 3.24 | 2.56 | 2.84 | 3.42 | 33.81 |
| Highest Precipitation (in.) | 8.51 | 5.11 | 7.47 | 3.17 | 5.71 | 6.61 | 5.86 | 6.44 | 6.62 | 4.89 | 6.91 | 9.48 | 9.48 |
| Year Highest Occurred | 1980 | 1989 | 1976 | 1982 | 1999 | 1989 | 1982 | 1988 | 1985 | 1990 | 1985 | 1983 | 1983 |
| Lowest Precipitation (in.) | 1.66 | 0.48 | 0.58 | 0.32 | 0.35 | 0.42 | 0.90 | 0.23 | 1.12 | 1.03 | 0.72 | 0.09 | 0.09 |
| Year Lowest Occurred | 1987 | 1997 | 1980 | 1998 | 1986 | 1995 | 1989 | 1990 | 1989 | 1972 | 1981 | 2000 | 2000 |
| Heating Degree Days (F) | 1562. | 1345. | 1221. | 801. | 425. | 176. | 77. | 102. | 312. | 652. | 1022. | 1399. | 9094. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 9. | 28. | 92. | 77. | 4. | 0. | 0. | 0. | 210. |