| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 21.4 | 28.5 | 40.2 | 57.4 | 70.2 | 78.7 | 84.7 | 83.5 | 73.0 | 59.2 | 38.8 | 25.7 | 55.1 |
| Highest Mean Max. Temperature (F) | 35.1 | 40.7 | 50.3 | 67.1 | 77.3 | 89.4 | 92.6 | 90.4 | 79.0 | 65.5 | 52.6 | 37.6 | 92.6 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1975 | 1976 | 1998 | 1974 | 1999 | 1979 | 1975 |
| Lowest Mean Max. Temperature (F) | 7.3 | 12.0 | 30.2 | 46.7 | 63.4 | 72.1 | 74.5 | 76.6 | 65.5 | 54.7 | 25.5 | 8.4 | 7.3 |
| Year Lowest Occurred | 1978 | 1979 | 1996 | 1975 | 1996 | 1985 | 1992 | 1992 | 1986 | 1995 | 1985 | 1983 | 1978 |
| Mean Temperature (F) | 11.0 | 18.7 | 30.7 | 45.4 | 57.9 | 66.8 | 72.2 | 70.5 | 59.8 | 46.8 | 29.3 | 16.0 | 43.8 |
| Highest Mean Temperature (F) | 25.3 | 30.5 | 39.5 | 51.9 | 64.9 | 75.0 | 78.3 | 76.5 | 65.1 | 51.9 | 38.7 | 25.7 | 78.3 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1975 | 1983 | 1978 | 1975 | 1999 | 1997 | 1975 |
| Lowest Mean Temperature (F) | -1.9 | 2.5 | 21.3 | 39.0 | 52.6 | 61.3 | 64.3 | 64.3 | 55.4 | 43.0 | 16.4 | -0.5 | -1.9 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1997 | 1979 | 1985 | 1992 | 1992 | 1984 | 1976 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | 0.6 | 8.8 | 21.2 | 33.4 | 45.6 | 54.8 | 59.7 | 57.4 | 46.5 | 34.4 | 19.7 | 6.3 | 32.4 |
| Highest Mean Min. Temperature (F) | 15.5 | 23.8 | 30.7 | 38.1 | 52.4 | 60.6 | 64.6 | 64.0 | 51.2 | 39.5 | 27.3 | 17.0 | 64.6 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1984 | 1977 | 1991 | 1983 | 1983 | 1978 | 1984 | 1981 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -12.9 | -7.0 | 12.4 | 27.8 | 40.6 | 50.0 | 54.0 | 52.0 | 41.4 | 29.4 | 7.3 | -9.5 | -12.9 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1988 | 1997 | 1982 | 1992 | 1992 | 1974 | 1987 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.48 | 0.48 | 1.34 | 1.83 | 2.69 | 3.49 | 2.92 | 2.42 | 1.81 | 1.63 | 0.75 | 0.38 | 20.22 |
| Highest Precipitation (in.) | 1.34 | 1.12 | 4.00 | 7.88 | 7.36 | 7.72 | 7.71 | 5.93 | 5.32 | 7.29 | 2.87 | 1.37 | 7.88 |
| Year Highest Occurred | 1997 | 1987 | 1977 | 1986 | 1991 | 1990 | 1972 | 1980 | 1996 | 1998 | 2000 | 1988 | 1986 |
| Lowest Precipitation (in.) | 0.05 | 0.08 | 0.04 | 0.12 | 0.30 | 0.37 | 0.30 | 0.24 | 0.05 | 0.08 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1974 | 1985 | 1971 | 1981 | 1994 | 1974 | 1975 | 1996 | 1979 | 1978 | 1999 | 1986 | 1999 |
| Heating Degree Days (F) | 1678. | 1312. | 1072. | 591. | 251. | 59. | 11. | 27. | 206. | 569. | 1066. | 1506. | 8348. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 3. | 29. | 112. | 235. | 196. | 49. | 2. | 0. | 0. | 626. |