| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 19.8 | 26.2 | 36.9 | 52.3 | 66.4 | 74.3 | 78.6 | 76.5 | 67.3 | 54.9 | 37.8 | 24.4 | 51.3 |
| Highest Mean Max. Temperature (F) | 29.9 | 37.3 | 46.4 | 60.9 | 76.6 | 80.5 | 84.6 | 81.3 | 76.0 | 62.2 | 47.9 | 31.5 | 84.6 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1998 | 1988 |
| Lowest Mean Max. Temperature (F) | 11.3 | 17.0 | 29.5 | 45.0 | 58.9 | 69.0 | 72.4 | 71.9 | 61.5 | 48.3 | 28.2 | 14.1 | 11.3 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1975 | 1973 | 1982 | 1992 | 1986 | 1993 | 1987 | 1995 | 1983 | 1979 |
| Mean Temperature (F) | 9.7 | 15.6 | 27.6 | 42.0 | 55.0 | 63.5 | 68.0 | 66.0 | 56.8 | 44.9 | 30.0 | 15.8 | 41.2 |
| Highest Mean Temperature (F) | 19.9 | 30.4 | 36.6 | 48.1 | 63.2 | 68.7 | 72.2 | 70.8 | 63.0 | 51.9 | 37.6 | 23.5 | 72.2 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1995 | 1983 | 1995 | 1998 | 1971 | 1999 | 1997 | 1983 |
| Lowest Mean Temperature (F) | -1.4 | 4.6 | 20.2 | 35.8 | 49.2 | 57.9 | 61.8 | 61.7 | 51.2 | 39.0 | 21.7 | 4.7 | -1.4 |
| Year Lowest Occurred | 1977 | 1989 | 1975 | 1975 | 1983 | 1982 | 1992 | 1977 | 1993 | 1988 | 1995 | 1989 | 1977 |
| Mean Min. Temperature (F) | -0.5 | 5.0 | 18.3 | 31.6 | 43.6 | 52.6 | 57.3 | 55.5 | 46.2 | 34.8 | 22.1 | 7.1 | 31.1 |
| Highest Mean Min. Temperature (F) | 10.9 | 23.5 | 28.7 | 37.0 | 49.9 | 58.2 | 61.3 | 62.1 | 51.2 | 42.2 | 28.0 | 17.3 | 62.1 |
| Year Highest Occurred | 1998 | 1998 | 1973 | 1986 | 1977 | 1991 | 1999 | 1995 | 1994 | 1971 | 1998 | 1987 | 1995 |
| Lowest Mean Min. Temperature (F) | -14.2 | -7.8 | 8.6 | 26.6 | 37.9 | 46.7 | 51.1 | 50.4 | 40.3 | 28.8 | 12.1 | -6.0 | -14.2 |
| Year Lowest Occurred | 1977 | 1989 | 1975 | 1975 | 1971 | 1982 | 1992 | 1971 | 1974 | 1988 | 1976 | 1985 | 1977 |
| Mean Precipitation (in.) | 1.18 | 0.91 | 1.84 | 2.51 | 3.16 | 4.44 | 3.97 | 4.68 | 4.50 | 2.60 | 2.13 | 1.28 | 33.20 |
| Highest Precipitation (in.) | 2.93 | 3.03 | 3.64 | 4.69 | 7.18 | 10.37 | 9.20 | 9.45 | 10.36 | 6.44 | 6.57 | 3.28 | 10.37 |
| Year Highest Occurred | 1982 | 1971 | 1977 | 1977 | 1973 | 1980 | 1972 | 1995 | 1986 | 1995 | 1991 | 1972 | 1980 |
| Lowest Precipitation (in.) | 0.08 | 0.05 | 0.18 | 0.81 | 0.65 | 1.04 | 1.47 | 0.79 | 0.67 | 0.27 | 0.27 | 0.38 | 0.05 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1997 | 1986 | 1983 | 1974 | 1976 | 1979 | 1976 | 1976 | 1997 | 1987 |
| Heating Degree Days (F) | 1718. | 1384. | 1159. | 691. | 339. | 111. | 38. | 67. | 261. | 625. | 1051. | 1527. | 8971. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 28. | 65. | 129. | 97. | 13. | 0. | 0. | 0. | 332. |