| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 26.5 | 30.6 | 38.5 | 48.0 | 59.3 | 71.8 | 78.8 | 77.4 | 66.8 | 53.6 | 36.7 | 28.5 | 51.4 |
| Highest Mean Max. Temperature (F) | 37.1 | 36.9 | 47.6 | 57.0 | 64.1 | 80.3 | 83.3 | 81.5 | 73.7 | 60.2 | 46.9 | 38.8 | 83.3 |
| Year Highest Occurred | 1981 | 1991 | 1986 | 1981 | 1985 | 1988 | 1988 | 1971 | 1979 | 1988 | 1999 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 15.5 | 20.7 | 31.6 | 38.5 | 47.5 | 62.1 | 73.0 | 73.7 | 60.8 | 48.2 | 25.5 | 17.2 | 15.5 |
| Year Lowest Occurred | 1979 | 1989 | 1973 | 1984 | 1995 | 1998 | 1992 | 1997 | 1985 | 1995 | 2000 | 1983 | 1979 |
| Mean Temperature (F) | 12.5 | 16.2 | 24.2 | 33.4 | 43.3 | 54.0 | 59.8 | 58.2 | 48.0 | 36.8 | 22.4 | 14.3 | 35.3 |
| Highest Mean Temperature (F) | 19.7 | 21.8 | 31.9 | 40.3 | 47.6 | 61.1 | 62.9 | 62.0 | 54.8 | 40.5 | 30.1 | 24.6 | 62.9 |
| Year Highest Occurred | 1981 | 1991 | 1986 | 1981 | 1987 | 1988 | 1989 | 2000 | 1998 | 1988 | 1998 | 1980 | 1989 |
| Lowest Mean Temperature (F) | 0.9 | 6.1 | 19.1 | 24.9 | 37.3 | 47.3 | 56.9 | 54.6 | 44.1 | 32.2 | 8.4 | 3.6 | 0.9 |
| Year Lowest Occurred | 1979 | 1989 | 1984 | 1983 | 1995 | 1998 | 1992 | 1974 | 1985 | 1995 | 2000 | 1983 | 1979 |
| Mean Min. Temperature (F) | -1.6 | 1.7 | 9.9 | 18.8 | 27.2 | 36.2 | 40.7 | 39.0 | 29.2 | 19.9 | 8.0 | 0.1 | 19.1 |
| Highest Mean Min. Temperature (F) | 7.0 | 9.9 | 16.3 | 23.6 | 31.2 | 41.9 | 43.7 | 43.4 | 36.9 | 25.0 | 21.1 | 11.6 | 43.7 |
| Year Highest Occurred | 1999 | 1986 | 1999 | 1981 | 1987 | 1988 | 1998 | 1983 | 1998 | 1998 | 1998 | 1996 | 1998 |
| Lowest Mean Min. Temperature (F) | -13.8 | -8.5 | 4.4 | 11.0 | 22.8 | 31.9 | 37.9 | 33.3 | 24.8 | 15.6 | -8.7 | -10.0 | -13.8 |
| Year Lowest Occurred | 1979 | 1989 | 1993 | 1983 | 1983 | 1989 | 1972 | 1974 | 1974 | 1976 | 2000 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.37 | 0.39 | 0.50 | 0.91 | 1.61 | 1.45 | 1.51 | 0.94 | 0.92 | 0.74 | 0.39 | 0.32 | 10.05 |
| Highest Precipitation (in.) | 1.24 | 2.53 | 3.34 | 2.89 | 4.69 | 5.36 | 4.88 | 2.92 | 1.83 | 3.38 | 1.03 | 1.65 | 5.36 |
| Year Highest Occurred | 1993 | 1993 | 1995 | 1993 | 1995 | 1993 | 1984 | 1997 | 1993 | 1998 | 1983 | 1994 | 1993 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.04 | 0.09 | 0.46 | 0.06 | 0.05 | 0.13 | 0.22 | 0.06 | 0.00 | 0.01 | 0.00 |
| Year Lowest Occurred | 1989 | 1983 | 1982 | 1987 | 1998 | 1980 | 2000 | 1996 | 1981 | 1991 | 1991 | 1979 | 1989 |
| Heating Degree Days (F) | 1631. | 1368. | 1265. | 948. | 675. | 337. | 169. | 217. | 511. | 876. | 1279. | 1571. | 10847. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 6. | 8. | 6. | 0. | 0. | 0. | 0. | 20. |