| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 27.4 | 36.1 | 47.8 | 59.9 | 70.3 | 80.9 | 88.4 | 88.3 | 75.6 | 62.6 | 42.7 | 31.4 | 59.3 |
| Highest Mean Max. Temperature (F) | 42.7 | 48.8 | 56.9 | 72.0 | 79.2 | 96.9 | 94.6 | 96.1 | 85.0 | 68.7 | 56.4 | 44.3 | 96.9 |
| Year Highest Occurred | 1992 | 1992 | 1986 | 1980 | 1988 | 1988 | 1988 | 1983 | 1990 | 1974 | 1999 | 1979 | 1988 |
| Lowest Mean Max. Temperature (F) | 11.1 | 18.4 | 34.7 | 48.7 | 59.7 | 73.6 | 74.7 | 80.0 | 65.3 | 58.3 | 24.7 | 11.9 | 11.1 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1975 | 1996 | 1998 | 1993 | 1993 | 1985 | 1984 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 14.1 | 22.3 | 33.3 | 44.9 | 55.2 | 65.4 | 71.4 | 70.4 | 57.6 | 46.0 | 28.9 | 18.4 | 44.0 |
| Highest Mean Temperature (F) | 26.9 | 34.1 | 42.3 | 53.2 | 61.8 | 78.3 | 75.4 | 77.0 | 64.7 | 48.9 | 39.8 | 29.7 | 78.3 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1980 | 1988 | 1988 | 1984 | 1983 | 1998 | 1979 | 1999 | 1999 | 1988 |
| Lowest Mean Temperature (F) | -2.3 | 6.1 | 22.4 | 37.7 | 49.6 | 60.3 | 62.7 | 64.5 | 52.0 | 42.1 | 12.7 | -1.1 | -2.3 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1975 | 1974 | 1998 | 1993 | 1977 | 1985 | 1991 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 0.7 | 8.4 | 18.7 | 29.8 | 40.0 | 49.9 | 54.3 | 52.5 | 39.6 | 29.3 | 15.1 | 5.3 | 28.6 |
| Highest Mean Min. Temperature (F) | 16.4 | 22.9 | 27.6 | 34.4 | 44.4 | 59.7 | 58.0 | 58.5 | 44.7 | 32.4 | 23.1 | 16.6 | 59.7 |
| Year Highest Occurred | 1986 | 1999 | 1986 | 1980 | 1988 | 1988 | 1975 | 1998 | 1998 | 1998 | 1999 | 1999 | 1988 |
| Lowest Mean Min. Temperature (F) | -16.8 | -9.4 | 10.1 | 25.1 | 35.1 | 45.9 | 49.5 | 48.0 | 36.0 | 24.4 | 0.7 | -14.1 | -16.8 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1983 | 1973 | 1979 | 1972 | 1992 | 1984 | 1991 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.51 | 0.36 | 0.61 | 0.98 | 2.19 | 2.27 | 1.73 | 1.19 | 1.23 | 0.88 | 0.44 | 0.51 | 12.90 |
| Highest Precipitation (in.) | 1.69 | 1.77 | 1.42 | 3.26 | 4.90 | 5.66 | 7.40 | 3.21 | 5.19 | 2.90 | 1.21 | 1.69 | 7.40 |
| Year Highest Occurred | 1971 | 1979 | 1996 | 1991 | 1978 | 1976 | 1993 | 1999 | 1978 | 1993 | 1998 | 1989 | 1993 |
| Lowest Precipitation (in.) | 0.00 | 0.01 | 0.12 | 0.14 | 0.15 | 0.47 | 0.00 | 0.13 | 0.04 | 0.03 | 0.00 | 0.02 | 0.00 |
| Year Lowest Occurred | 1973 | 1990 | 1999 | 1983 | 1980 | 1985 | 1984 | 2000 | 1990 | 1987 | 1972 | 1997 | 1973 |
| Heating Degree Days (F) | 1580. | 1197. | 986. | 604. | 319. | 105. | 28. | 55. | 259. | 591. | 1084. | 1446. | 8254. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 15. | 116. | 226. | 221. | 36. | 0. | 0. | 0. | 614. |