| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 22.8 | 29.7 | 41.7 | 58.2 | 71.2 | 79.1 | 83.2 | 80.8 | 71.8 | 59.4 | 40.5 | 26.7 | 55.4 |
| Highest Mean Max. Temperature (F) | 35.3 | 42.0 | 50.4 | 68.8 | 80.5 | 86.5 | 89.0 | 87.1 | 78.6 | 66.4 | 52.0 | 36.3 | 89.0 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1988 | 1983 | 1978 | 1973 | 1999 | 1979 | 1988 |
| Lowest Mean Max. Temperature (F) | 11.5 | 21.0 | 33.6 | 48.4 | 65.1 | 73.4 | 74.0 | 75.5 | 63.2 | 54.9 | 30.5 | 13.5 | 11.5 |
| Year Lowest Occurred | 1994 | 1994 | 1975 | 1975 | 1997 | 1993 | 1992 | 1992 | 1993 | 1995 | 1991 | 1983 | 1994 |
| Mean Temperature (F) | 14.5 | 21.4 | 32.8 | 47.2 | 59.9 | 68.4 | 73.0 | 70.8 | 61.8 | 49.8 | 33.3 | 19.5 | 46.0 |
| Highest Mean Temperature (F) | 26.7 | 32.6 | 41.4 | 55.5 | 69.1 | 74.2 | 77.2 | 76.4 | 68.5 | 57.1 | 41.5 | 29.1 | 77.2 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1988 | 1988 | 1983 | 1978 | 1973 | 1999 | 1979 | 1988 |
| Lowest Mean Temperature (F) | 3.3 | 11.4 | 24.9 | 40.1 | 54.2 | 62.8 | 65.6 | 65.8 | 54.6 | 45.0 | 24.4 | 5.5 | 3.3 |
| Year Lowest Occurred | 1982 | 1989 | 1996 | 1975 | 1997 | 1982 | 1992 | 1992 | 1993 | 1988 | 1991 | 1983 | 1982 |
| Mean Min. Temperature (F) | 6.2 | 13.0 | 23.9 | 36.2 | 48.5 | 57.6 | 62.7 | 60.7 | 51.7 | 40.1 | 26.1 | 12.3 | 36.6 |
| Highest Mean Min. Temperature (F) | 18.0 | 27.1 | 33.8 | 43.5 | 57.6 | 62.8 | 66.4 | 65.6 | 58.3 | 47.7 | 31.0 | 21.9 | 66.4 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1991 | 1987 | 1983 | 1978 | 1973 | 1999 | 1979 | 1987 |
| Lowest Mean Min. Temperature (F) | -6.2 | 0.8 | 15.6 | 30.3 | 42.8 | 50.3 | 57.1 | 56.0 | 46.0 | 34.1 | 18.0 | -2.5 | -6.2 |
| Year Lowest Occurred | 1982 | 1989 | 1996 | 1996 | 1983 | 1982 | 1992 | 1992 | 1993 | 1988 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 1.02 | 0.78 | 1.92 | 2.54 | 3.73 | 4.98 | 4.41 | 4.37 | 3.20 | 2.51 | 2.09 | 1.04 | 32.59 |
| Highest Precipitation (in.) | 3.12 | 2.52 | 4.34 | 6.92 | 8.57 | 9.70 | 11.56 | 9.41 | 7.59 | 6.03 | 5.27 | 3.55 | 11.56 |
| Year Highest Occurred | 1975 | 1981 | 1998 | 1975 | 1991 | 1990 | 1987 | 1993 | 1986 | 1984 | 1996 | 1982 | 1987 |
| Lowest Precipitation (in.) | 0.12 | 0.01 | 0.35 | 0.19 | 0.84 | 0.49 | 1.24 | 1.47 | 0.94 | 0.33 | 0.13 | 0.21 | 0.01 |
| Year Lowest Occurred | 1990 | 1987 | 1994 | 1987 | 1976 | 1988 | 1974 | 1976 | 1974 | 1978 | 1976 | 1986 | 1987 |
| Heating Degree Days (F) | 1567. | 1221. | 999. | 540. | 217. | 45. | 13. | 21. | 145. | 475. | 952. | 1411. | 7606. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 5. | 56. | 145. | 258. | 199. | 49. | 3. | 0. | 0. | 715. |