| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 15.8 | 23.0 | 35.0 | 54.0 | 69.9 | 77.6 | 82.5 | 81.5 | 70.1 | 56.2 | 35.2 | 21.3 | 51.8 |
| Highest Mean Max. Temperature (F) | 32.0 | 36.0 | 46.3 | 65.2 | 79.5 | 86.0 | 88.0 | 87.8 | 78.1 | 61.9 | 50.5 | 33.4 | 88.0 |
| Year Highest Occurred | 1990 | 1991 | 2000 | 1987 | 1977 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1999 | 1988 |
| Lowest Mean Max. Temperature (F) | 1.2 | 5.1 | 26.2 | 41.9 | 60.6 | 71.8 | 73.4 | 74.8 | 62.5 | 48.9 | 25.2 | 7.5 | 1.2 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1979 | 1979 | 1985 | 1992 | 1977 | 1985 | 1981 | 1985 | 1983 | 1982 |
| Mean Temperature (F) | 5.7 | 12.8 | 25.5 | 42.3 | 56.9 | 65.4 | 70.1 | 68.5 | 57.4 | 44.6 | 26.3 | 12.2 | 40.6 |
| Highest Mean Temperature (F) | 21.4 | 27.5 | 36.0 | 51.0 | 65.3 | 72.4 | 74.5 | 73.9 | 63.6 | 49.7 | 37.2 | 25.4 | 74.5 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1983 | 1984 | 1998 | 1973 | 1999 | 1997 | 1983 |
| Lowest Mean Temperature (F) | -8.9 | -4.3 | 16.8 | 33.5 | 49.5 | 59.1 | 62.6 | 62.6 | 52.5 | 40.2 | 15.3 | -0.6 | -8.9 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1979 | 1979 | 1982 | 1992 | 1977 | 1993 | 1976 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -4.4 | 2.5 | 16.0 | 30.6 | 43.8 | 53.2 | 57.7 | 55.5 | 44.6 | 33.0 | 17.3 | 3.1 | 29.4 |
| Highest Mean Min. Temperature (F) | 10.7 | 21.1 | 26.4 | 37.3 | 51.1 | 59.1 | 61.9 | 60.9 | 50.5 | 39.3 | 25.2 | 18.8 | 61.9 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1998 | 1977 | 1995 | 1986 | 1984 | 1978 | 1984 | 1983 | 1997 | 1986 |
| Lowest Mean Min. Temperature (F) | -19.1 | -13.8 | 6.7 | 24.6 | 36.6 | 45.0 | 51.8 | 50.4 | 39.3 | 26.8 | 5.4 | -8.7 | -19.1 |
| Year Lowest Occurred | 1982 | 1979 | 1997 | 1997 | 1997 | 1982 | 1992 | 1997 | 1993 | 1976 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.50 | 0.55 | 0.93 | 1.56 | 2.35 | 3.46 | 3.23 | 2.78 | 2.05 | 1.92 | 0.89 | 0.48 | 20.70 |
| Highest Precipitation (in.) | 1.21 | 1.89 | 2.34 | 6.39 | 5.09 | 6.52 | 10.08 | 6.15 | 7.56 | 7.32 | 4.32 | 1.29 | 10.08 |
| Year Highest Occurred | 1999 | 1998 | 1995 | 1986 | 1985 | 1998 | 1987 | 1980 | 1973 | 1998 | 2000 | 1988 | 1987 |
| Lowest Precipitation (in.) | 0.00 | 0.08 | 0.00 | 0.00 | 0.44 | 0.94 | 0.49 | 0.61 | 0.22 | 0.00 | 0.00 | 0.05 | 0.00 |
| Year Lowest Occurred | 1973 | 1975 | 1991 | 1980 | 1980 | 1972 | 1984 | 1984 | 1974 | 1992 | 1999 | 1989 | 1973 |
| Heating Degree Days (F) | 1839. | 1463. | 1226. | 684. | 290. | 92. | 34. | 50. | 250. | 633. | 1162. | 1638. | 9361. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 36. | 104. | 191. | 158. | 20. | 0. | 0. | 0. | 511. |