| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 18.7 | 25.6 | 37.8 | 51.9 | 67.8 | 74.5 | 79.0 | 76.0 | 66.4 | 54.8 | 36.8 | 24.1 | 51.1 |
| Highest Mean Max. Temperature (F) | 33.7 | 36.6 | 48.0 | 66.6 | 77.9 | 86.4 | 88.0 | 81.6 | 77.3 | 61.9 | 49.7 | 33.5 | 88.0 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1998 | 1988 | 1988 | 1988 | 1998 | 2000 | 1999 | 1998 | 1988 |
| Lowest Mean Max. Temperature (F) | 5.7 | 14.8 | 27.5 | 42.8 | 58.1 | 67.0 | 69.9 | 70.6 | 60.8 | 47.2 | 28.4 | 12.5 | 5.7 |
| Year Lowest Occurred | 1994 | 1979 | 1984 | 1995 | 1979 | 1993 | 1992 | 1992 | 1974 | 1980 | 1991 | 1983 | 1994 |
| Mean Temperature (F) | 8.4 | 14.7 | 28.2 | 40.9 | 54.3 | 62.8 | 68.4 | 65.8 | 55.3 | 44.2 | 29.1 | 15.4 | 40.6 |
| Highest Mean Temperature (F) | 26.4 | 28.0 | 37.7 | 49.3 | 64.0 | 74.0 | 77.0 | 74.2 | 61.3 | 51.3 | 38.6 | 24.6 | 77.0 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1990 | 1973 | 1999 | 1994 | 1983 |
| Lowest Mean Temperature (F) | -6.8 | 0.4 | 19.3 | 32.3 | 46.7 | 51.9 | 57.8 | 59.3 | 49.8 | 37.4 | 20.0 | -0.3 | -6.8 |
| Year Lowest Occurred | 1982 | 1979 | 1984 | 1996 | 1997 | 1982 | 1992 | 1977 | 1993 | 1980 | 1985 | 1989 | 1982 |
| Mean Min. Temperature (F) | -1.9 | 3.8 | 18.5 | 29.9 | 40.8 | 51.0 | 57.7 | 55.5 | 44.2 | 33.5 | 21.4 | 6.7 | 30.1 |
| Highest Mean Min. Temperature (F) | 19.0 | 19.3 | 29.9 | 38.0 | 51.0 | 63.5 | 68.6 | 67.3 | 51.9 | 43.4 | 29.9 | 18.2 | 68.6 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1986 | 1977 | 1991 | 1983 | 1983 | 1990 | 1971 | 1988 | 1994 | 1983 |
| Lowest Mean Min. Temperature (F) | -20.4 | -14.1 | 7.1 | 21.4 | 31.7 | 36.4 | 45.7 | 47.2 | 35.2 | 26.8 | 10.4 | -15.2 | -20.4 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1996 | 1983 | 1982 | 1992 | 1977 | 1976 | 1976 | 1985 | 1989 | 1982 |
| Mean Precipitation (in.) | 1.07 | 0.96 | 1.87 | 2.63 | 3.27 | 4.48 | 4.76 | 4.72 | 4.37 | 3.29 | 2.08 | 1.02 | 34.52 |
| Highest Precipitation (in.) | 2.38 | 2.06 | 4.08 | 5.02 | 6.02 | 8.93 | 9.78 | 8.39 | 11.51 | 7.75 | 7.54 | 2.46 | 11.51 |
| Year Highest Occurred | 1982 | 1998 | 1985 | 1977 | 1999 | 1981 | 2000 | 1980 | 1985 | 1982 | 2000 | 1972 | 1985 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.09 | 0.28 | 0.65 | 1.89 | 1.05 | 0.85 | 1.18 | 1.00 | 0.25 | 0.00 | 0.00 |
| Year Lowest Occurred | 1981 | 1995 | 1978 | 1988 | 1976 | 1988 | 1998 | 1976 | 1976 | 1976 | 1981 | 1989 | 1981 |
| Heating Degree Days (F) | 1755. | 1409. | 1143. | 725. | 373. | 184. | 84. | 106. | 301. | 647. | 1078. | 1538. | 9343. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 42. | 117. | 188. | 129. | 11. | 0. | 0. | 0. | 489. |