| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.0 | 35.0 | 45.7 | 56.0 | 65.9 | 76.7 | 85.0 | 83.7 | 73.3 | 60.4 | 43.0 | 31.6 | 57.2 |
| Highest Mean Max. Temperature (F) | 37.2 | 42.7 | 54.7 | 64.9 | 74.1 | 83.7 | 89.8 | 87.4 | 80.4 | 69.6 | 54.6 | 40.6 | 89.8 |
| Year Highest Occurred | 2000 | 1992 | 1986 | 1992 | 1992 | 1988 | 1989 | 1981 | 1990 | 1988 | 1999 | 1995 | 1989 |
| Lowest Mean Max. Temperature (F) | 20.1 | 27.6 | 39.0 | 46.1 | 59.2 | 69.2 | 77.3 | 79.5 | 65.2 | 51.2 | 34.6 | 21.9 | 20.1 |
| Year Lowest Occurred | 1973 | 1989 | 1973 | 1975 | 1975 | 1998 | 1993 | 1993 | 1986 | 1984 | 2000 | 1990 | 1973 |
| Mean Temperature (F) | 19.0 | 22.4 | 33.6 | 42.6 | 51.5 | 60.1 | 67.3 | 65.9 | 56.4 | 45.4 | 32.1 | 21.8 | 43.2 |
| Highest Mean Temperature (F) | 27.7 | 31.6 | 42.4 | 48.7 | 56.9 | 65.1 | 71.0 | 68.8 | 61.9 | 50.7 | 39.5 | 30.7 | 71.0 |
| Year Highest Occurred | 2000 | 1986 | 1986 | 1992 | 1992 | 1988 | 1989 | 1994 | 1998 | 1988 | 1999 | 1995 | 1989 |
| Lowest Mean Temperature (F) | 9.4 | 12.9 | 25.1 | 34.8 | 45.2 | 55.2 | 60.4 | 62.1 | 52.0 | 39.8 | 24.5 | 10.0 | 9.4 |
| Year Lowest Occurred | 1973 | 1974 | 1976 | 1975 | 1975 | 1975 | 1993 | 1975 | 1986 | 1984 | 2000 | 1990 | 1973 |
| Mean Min. Temperature (F) | 8.0 | 9.8 | 21.4 | 29.2 | 37.0 | 43.4 | 49.6 | 48.1 | 39.5 | 30.3 | 21.2 | 11.9 | 29.1 |
| Highest Mean Min. Temperature (F) | 18.2 | 21.4 | 30.0 | 33.1 | 40.4 | 46.9 | 53.3 | 54.1 | 46.3 | 33.9 | 26.4 | 20.8 | 54.1 |
| Year Highest Occurred | 2000 | 1986 | 1986 | 2000 | 2000 | 1997 | 1985 | 1983 | 1998 | 1983 | 1998 | 1995 | 1983 |
| Lowest Mean Min. Temperature (F) | -4.2 | -2.7 | 10.0 | 23.5 | 31.1 | 39.6 | 43.5 | 43.5 | 35.7 | 26.6 | 13.3 | -2.0 | -4.2 |
| Year Lowest Occurred | 1989 | 1985 | 1976 | 1975 | 1975 | 1976 | 1993 | 1974 | 1971 | 1995 | 1993 | 1990 | 1989 |
| Mean Precipitation (in.) | 3.89 | 3.25 | 3.45 | 2.94 | 3.40 | 1.74 | 1.15 | 1.13 | 2.03 | 2.91 | 3.15 | 3.34 | 32.38 |
| Highest Precipitation (in.) | 8.50 | 9.02 | 7.98 | 8.27 | 7.54 | 6.24 | 4.36 | 4.55 | 7.93 | 6.96 | 7.66 | 12.91 | 12.91 |
| Year Highest Occurred | 1997 | 1986 | 1982 | 1986 | 1981 | 1993 | 1984 | 1983 | 1982 | 1981 | 1988 | 1983 | 1983 |
| Lowest Precipitation (in.) | 0.64 | 0.70 | 1.13 | 0.17 | 0.09 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 0.06 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1992 | 1987 | 1972 | 1996 | 1971 | 1975 | 1974 | 1978 | 1976 | 1976 | 1971 |
| Heating Degree Days (F) | 1426. | 1192. | 976. | 671. | 421. | 179. | 38. | 58. | 269. | 609. | 987. | 1342. | 8168. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 29. | 109. | 86. | 12. | 0. | 0. | 0. | 238. |