| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 24.8 | 31.3 | 43.0 | 58.3 | 70.5 | 80.3 | 86.1 | 84.4 | 74.7 | 60.9 | 41.4 | 28.8 | 57.0 |
| Highest Mean Max. Temperature (F) | 39.2 | 44.2 | 55.1 | 69.3 | 78.4 | 89.3 | 94.4 | 92.8 | 82.4 | 67.1 | 56.8 | 41.0 | 94.4 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1975 | 1983 | 1998 | 1974 | 1999 | 1979 | 1975 |
| Lowest Mean Max. Temperature (F) | 10.3 | 16.6 | 34.9 | 47.7 | 64.2 | 74.3 | 74.8 | 76.4 | 67.4 | 55.4 | 27.6 | 11.1 | 10.3 |
| Year Lowest Occurred | 1979 | 1979 | 1975 | 1975 | 1996 | 1993 | 1992 | 1992 | 1985 | 1976 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 14.2 | 21.0 | 32.6 | 46.1 | 58.2 | 67.9 | 73.4 | 71.5 | 61.0 | 47.9 | 31.3 | 18.6 | 45.3 |
| Highest Mean Temperature (F) | 28.3 | 33.3 | 40.4 | 53.6 | 65.3 | 75.3 | 78.9 | 78.5 | 67.4 | 52.3 | 42.3 | 28.7 | 78.9 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1974 | 1983 | 1998 | 2000 | 1999 | 1997 | 1974 |
| Lowest Mean Temperature (F) | -0.4 | 5.5 | 24.4 | 39.5 | 53.0 | 63.1 | 65.1 | 65.6 | 56.2 | 41.6 | 18.1 | 2.2 | -0.4 |
| Year Lowest Occurred | 1978 | 1979 | 1975 | 1975 | 1979 | 1985 | 1992 | 1992 | 1993 | 1976 | 1985 | 1983 | 1978 |
| Mean Min. Temperature (F) | 3.5 | 10.8 | 22.3 | 33.9 | 45.8 | 55.4 | 60.7 | 58.6 | 47.3 | 34.9 | 21.1 | 8.4 | 33.6 |
| Highest Mean Min. Temperature (F) | 17.3 | 24.9 | 31.2 | 39.4 | 52.2 | 63.4 | 64.9 | 64.3 | 52.3 | 40.3 | 27.8 | 20.1 | 64.9 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1987 | 1991 | 1983 | 1983 | 1998 | 1998 | 1999 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -11.1 | -5.6 | 13.9 | 29.7 | 38.4 | 50.5 | 53.3 | 53.6 | 41.0 | 27.7 | 8.7 | -6.7 | -11.1 |
| Year Lowest Occurred | 1978 | 1979 | 1975 | 1996 | 1976 | 1985 | 1971 | 1977 | 1974 | 1976 | 1985 | 1983 | 1978 |
| Mean Precipitation (in.) | 0.49 | 0.57 | 1.67 | 2.29 | 3.00 | 3.28 | 2.86 | 2.07 | 1.80 | 1.59 | 0.89 | 0.39 | 20.90 |
| Highest Precipitation (in.) | 1.93 | 1.73 | 5.89 | 5.59 | 6.86 | 11.49 | 6.69 | 4.63 | 4.03 | 5.12 | 2.46 | 1.28 | 11.49 |
| Year Highest Occurred | 1975 | 1977 | 1977 | 1991 | 1972 | 1984 | 1993 | 1981 | 1986 | 1998 | 1985 | 1987 | 1984 |
| Lowest Precipitation (in.) | 0.02 | 0.10 | 0.15 | 0.21 | 0.33 | 0.77 | 0.46 | 0.14 | 0.00 | 0.09 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1990 | 1985 | 1971 | 1996 | 1992 | 1988 | 1975 | 1976 | 1998 | 1988 | 1990 | 1986 | 1998 |
| Heating Degree Days (F) | 1572. | 1242. | 1004. | 567. | 242. | 49. | 8. | 21. | 180. | 530. | 996. | 1423. | 7834. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 4. | 29. | 138. | 273. | 228. | 66. | 3. | 0. | 0. | 741. |