| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.9 | 36.0 | 42.8 | 51.7 | 61.0 | 69.9 | 78.5 | 77.6 | 67.5 | 56.1 | 39.6 | 30.7 | 53.5 |
| Highest Mean Max. Temperature (F) | 39.1 | 44.6 | 52.4 | 61.3 | 68.2 | 77.7 | 84.4 | 85.5 | 75.7 | 63.6 | 54.0 | 41.8 | 85.5 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1987 | 1992 | 1988 | 1998 | 2000 | 1990 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 15.7 | 22.7 | 33.5 | 40.4 | 55.3 | 62.2 | 66.8 | 70.2 | 56.7 | 49.7 | 27.1 | 17.6 | 15.7 |
| Year Lowest Occurred | 1979 | 1989 | 1999 | 1975 | 1974 | 1998 | 1993 | 1993 | 1986 | 1984 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 18.3 | 22.6 | 30.1 | 38.5 | 47.3 | 54.8 | 61.1 | 59.8 | 50.4 | 40.0 | 26.6 | 18.6 | 39.0 |
| Highest Mean Temperature (F) | 27.6 | 31.2 | 37.8 | 44.7 | 52.2 | 60.5 | 66.3 | 64.5 | 58.0 | 46.1 | 37.5 | 29.0 | 66.3 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1987 | 1992 | 1988 | 1985 | 1971 | 1998 | 1988 | 1999 | 1980 | 1985 |
| Lowest Mean Temperature (F) | 0.9 | 8.9 | 24.3 | 29.8 | 43.0 | 49.9 | 52.5 | 54.3 | 44.2 | 34.9 | 14.9 | 5.9 | 0.9 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1974 | 1998 | 1993 | 1993 | 1986 | 1984 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 5.6 | 9.1 | 17.3 | 25.2 | 33.5 | 39.7 | 43.7 | 42.0 | 33.3 | 23.8 | 13.6 | 6.5 | 24.4 |
| Highest Mean Min. Temperature (F) | 16.1 | 17.9 | 24.0 | 28.4 | 37.2 | 44.2 | 48.7 | 47.2 | 41.8 | 28.5 | 23.1 | 16.2 | 48.7 |
| Year Highest Occurred | 1994 | 1991 | 1986 | 1992 | 1993 | 1986 | 1985 | 1999 | 1998 | 1988 | 1995 | 1980 | 1985 |
| Lowest Mean Min. Temperature (F) | -13.9 | -4.8 | 10.8 | 19.2 | 30.7 | 36.8 | 36.9 | 37.8 | 29.3 | 20.1 | 2.6 | -5.7 | -13.9 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1975 | 1976 | 1999 | 1980 | 1984 | 1984 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.46 | 0.42 | 0.77 | 0.99 | 1.91 | 2.09 | 1.31 | 1.39 | 1.14 | 0.70 | 0.57 | 0.53 | 12.28 |
| Highest Precipitation (in.) | 1.22 | 1.38 | 1.96 | 2.48 | 4.50 | 4.06 | 3.86 | 3.96 | 3.53 | 3.21 | 1.41 | 1.41 | 4.50 |
| Year Highest Occurred | 1975 | 1986 | 1991 | 1979 | 1980 | 1999 | 1975 | 1983 | 1980 | 1975 | 1981 | 1998 | 1980 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.34 | 0.30 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1999 | 1999 | 2000 | 1999 | 1979 | 1974 | 1999 | 2000 | 1999 | 1999 | 1998 | 2000 | 1999 |
| Heating Degree Days (F) | 1450. | 1189. | 1085. | 798. | 552. | 313. | 164. | 195. | 443. | 777. | 1152. | 1439. | 9557. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 7. | 44. | 33. | 5. | 0. | 0. | 0. | 89. |