| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 19.4 | 25.8 | 38.0 | 54.6 | 68.3 | 76.7 | 82.2 | 79.7 | 69.4 | 56.1 | 36.7 | 23.5 | 52.5 |
| Highest Mean Max. Temperature (F) | 35.6 | 38.7 | 48.9 | 66.1 | 76.9 | 85.2 | 89.2 | 87.4 | 76.0 | 62.5 | 50.0 | 35.4 | 89.2 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1976 | 1983 | 1998 | 1974 | 1999 | 1979 | 1976 |
| Lowest Mean Max. Temperature (F) | 6.4 | 12.7 | 29.3 | 41.1 | 61.4 | 69.7 | 71.9 | 74.2 | 63.0 | 51.2 | 25.6 | 5.3 | 5.3 |
| Year Lowest Occurred | 1979 | 1979 | 1996 | 1975 | 1996 | 1993 | 1992 | 1994 | 1985 | 1995 | 1996 | 1983 | 1983 |
| Mean Temperature (F) | 10.0 | 16.7 | 28.8 | 43.7 | 57.1 | 66.2 | 71.6 | 69.5 | 58.8 | 46.1 | 28.5 | 15.0 | 42.7 |
| Highest Mean Temperature (F) | 25.0 | 29.7 | 37.6 | 51.7 | 65.1 | 73.0 | 76.3 | 75.9 | 65.5 | 50.9 | 40.1 | 25.4 | 76.3 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1974 | 1983 | 1998 | 1973 | 1999 | 1979 | 1974 |
| Lowest Mean Temperature (F) | -3.3 | 1.9 | 19.4 | 34.7 | 50.6 | 61.1 | 63.8 | 64.4 | 54.4 | 42.1 | 17.7 | -1.9 | -3.3 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1975 | 1979 | 1993 | 1992 | 1977 | 1993 | 1987 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | 0.5 | 7.5 | 19.6 | 32.8 | 45.8 | 55.7 | 61.0 | 59.3 | 48.2 | 36.0 | 20.2 | 6.5 | 32.8 |
| Highest Mean Min. Temperature (F) | 14.4 | 21.9 | 28.8 | 37.6 | 53.4 | 61.2 | 64.3 | 64.4 | 55.0 | 41.8 | 30.1 | 16.8 | 64.4 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1981 | 1977 | 1991 | 1999 | 1995 | 1998 | 1994 | 1999 | 1997 | 1995 |
| Lowest Mean Min. Temperature (F) | -13.6 | -9.0 | 9.1 | 27.9 | 39.6 | 49.3 | 55.2 | 54.2 | 42.2 | 31.1 | 9.7 | -9.2 | -13.6 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1997 | 1979 | 1982 | 1971 | 1977 | 1974 | 1972 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.75 | 0.57 | 1.10 | 1.84 | 2.63 | 3.48 | 3.73 | 3.06 | 1.88 | 1.69 | 0.85 | 0.48 | 22.06 |
| Highest Precipitation (in.) | 2.47 | 1.13 | 2.94 | 7.47 | 7.41 | 7.36 | 11.23 | 6.17 | 5.77 | 5.75 | 3.29 | 1.62 | 11.23 |
| Year Highest Occurred | 1975 | 1987 | 1977 | 1986 | 1972 | 1971 | 1993 | 1978 | 1986 | 1998 | 2000 | 1993 | 1993 |
| Lowest Precipitation (in.) | 0.00 | 0.15 | 0.00 | 0.12 | 0.48 | 0.99 | 0.37 | 0.91 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1990 | 1973 | 1996 | 1987 | 1992 | 1974 | 1976 | 1976 | 1998 | 1993 | 1999 | 1999 | 1990 |
| Heating Degree Days (F) | 1706. | 1353. | 1123. | 642. | 276. | 73. | 22. | 40. | 215. | 587. | 1097. | 1551. | 8685. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 30. | 109. | 227. | 179. | 28. | 0. | 0. | 0. | 575. |