| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 14.4 | 23.2 | 36.2 | 52.1 | 67.3 | 75.5 | 79.6 | 77.4 | 66.5 | 53.4 | 33.6 | 20.0 | 49.9 |
| Highest Mean Max. Temperature (F) | 26.6 | 35.3 | 48.8 | 64.9 | 77.7 | 84.5 | 85.9 | 83.5 | 73.1 | 57.9 | 45.8 | 29.3 | 85.9 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1988 | 1988 | 1984 | 1998 | 1971 | 1999 | 1994 | 1988 |
| Lowest Mean Max. Temperature (F) | 3.5 | 11.0 | 26.7 | 41.8 | 56.9 | 69.1 | 71.6 | 72.0 | 60.2 | 49.3 | 24.5 | 6.7 | 3.5 |
| Year Lowest Occurred | 1979 | 1972 | 1996 | 1975 | 1979 | 2000 | 1992 | 1977 | 1993 | 1993 | 1995 | 1983 | 1979 |
| Mean Temperature (F) | 1.9 | 10.0 | 23.4 | 39.7 | 54.2 | 63.1 | 67.2 | 64.9 | 54.5 | 42.4 | 24.8 | 9.4 | 38.0 |
| Highest Mean Temperature (F) | 14.6 | 27.7 | 35.4 | 48.5 | 64.1 | 69.7 | 72.6 | 71.0 | 59.1 | 48.1 | 36.7 | 22.0 | 72.6 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1988 | 1983 | 1984 | 1978 | 1973 | 1981 | 1997 | 1983 |
| Lowest Mean Temperature (F) | -11.0 | -2.3 | 12.2 | 31.4 | 46.7 | 57.1 | 59.9 | 59.8 | 49.6 | 38.0 | 15.4 | -3.5 | -11.0 |
| Year Lowest Occurred | 1982 | 1989 | 1996 | 1996 | 1979 | 2000 | 1992 | 1977 | 1993 | 1993 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -10.6 | -3.3 | 10.5 | 27.2 | 41.1 | 50.7 | 54.7 | 52.4 | 42.4 | 31.4 | 15.9 | -1.3 | 25.9 |
| Highest Mean Min. Temperature (F) | 2.7 | 20.1 | 22.0 | 33.0 | 50.5 | 55.2 | 61.4 | 58.5 | 46.9 | 38.8 | 28.0 | 15.2 | 61.4 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1986 | 1977 | 1991 | 1983 | 1984 | 1978 | 1973 | 1981 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -26.2 | -16.6 | -2.4 | 19.3 | 35.2 | 45.1 | 48.2 | 47.3 | 36.8 | 26.7 | 5.9 | -13.8 | -26.2 |
| Year Lowest Occurred | 1982 | 1989 | 1996 | 1996 | 1996 | 2000 | 1992 | 1999 | 1974 | 1993 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.64 | 0.51 | 0.79 | 1.37 | 2.40 | 3.97 | 4.03 | 3.65 | 2.96 | 2.14 | 1.25 | 0.57 | 24.28 |
| Highest Precipitation (in.) | 2.34 | 1.09 | 2.08 | 2.90 | 6.34 | 8.27 | 7.64 | 6.55 | 7.58 | 6.67 | 3.52 | 1.25 | 8.27 |
| Year Highest Occurred | 1975 | 1984 | 1999 | 1979 | 1999 | 1984 | 1995 | 1974 | 1973 | 1971 | 2000 | 1996 | 1984 |
| Lowest Precipitation (in.) | 0.08 | 0.05 | 0.10 | 0.08 | 0.35 | 1.46 | 1.11 | 1.03 | 0.32 | 0.13 | 0.01 | 0.12 | 0.01 |
| Year Lowest Occurred | 1973 | 1993 | 1978 | 1980 | 1976 | 1987 | 1985 | 1971 | 1974 | 1992 | 1976 | 1979 | 1976 |
| Heating Degree Days (F) | 1958. | 1543. | 1291. | 761. | 364. | 128. | 60. | 95. | 322. | 700. | 1208. | 1728. | 10158. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 30. | 70. | 126. | 92. | 5. | 0. | 0. | 0. | 323. |