| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 35.2 | 39.7 | 45.9 | 54.5 | 63.2 | 73.8 | 77.1 | 74.5 | 69.8 | 60.7 | 45.4 | 36.0 | 56.3 |
| Highest Mean Max. Temperature (F) | 44.1 | 46.8 | 52.7 | 62.4 | 69.7 | 79.3 | 82.4 | 78.2 | 77.4 | 68.0 | 54.7 | 49.8 | 82.4 |
| Year Highest Occurred | 1981 | 1974 | 1989 | 1981 | 1996 | 1981 | 1989 | 1980 | 1979 | 1988 | 1999 | 1980 | 1989 |
| Lowest Mean Max. Temperature (F) | 29.0 | 33.0 | 41.4 | 48.2 | 55.9 | 68.9 | 72.7 | 69.1 | 64.3 | 51.7 | 35.2 | 29.0 | 29.0 |
| Year Lowest Occurred | 1979 | 1997 | 1973 | 1973 | 1995 | 1995 | 1997 | 1999 | 1996 | 1984 | 1992 | 1972 | 1979 |
| Mean Temperature (F) | 17.1 | 21.8 | 30.0 | 38.5 | 47.0 | 56.1 | 60.6 | 58.8 | 52.8 | 43.2 | 29.2 | 18.8 | 39.5 |
| Highest Mean Temperature (F) | 25.4 | 28.5 | 37.2 | 45.0 | 52.4 | 60.2 | 64.7 | 61.3 | 57.8 | 48.4 | 35.8 | 31.8 | 64.7 |
| Year Highest Occurred | 1981 | 1995 | 1999 | 1992 | 1996 | 1981 | 1989 | 1983 | 1979 | 1988 | 1999 | 1980 | 1989 |
| Lowest Mean Temperature (F) | 7.9 | 14.5 | 23.1 | 32.2 | 42.7 | 51.5 | 58.2 | 54.2 | 48.3 | 37.7 | 21.3 | 9.5 | 7.9 |
| Year Lowest Occurred | 1973 | 1973 | 1973 | 1975 | 1995 | 1976 | 1977 | 1974 | 1971 | 1984 | 1992 | 1972 | 1973 |
| Mean Min. Temperature (F) | -1.1 | 3.9 | 14.1 | 22.4 | 30.8 | 38.3 | 44.1 | 43.0 | 35.8 | 25.6 | 13.0 | 1.5 | 22.6 |
| Highest Mean Min. Temperature (F) | 9.2 | 13.8 | 22.5 | 29.2 | 35.7 | 42.9 | 48.7 | 47.3 | 40.1 | 30.4 | 18.6 | 13.8 | 48.7 |
| Year Highest Occurred | 1999 | 1995 | 1999 | 1992 | 1992 | 1996 | 1998 | 1995 | 1997 | 1992 | 1981 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -14.3 | -12.5 | 4.7 | 14.6 | 26.4 | 32.1 | 39.4 | 33.8 | 29.9 | 17.4 | 7.3 | -10.1 | -14.3 |
| Year Lowest Occurred | 1973 | 1974 | 1973 | 1974 | 1977 | 1976 | 1974 | 1974 | 1971 | 1976 | 1992 | 1972 | 1973 |
| Mean Precipitation (in.) | 0.78 | 0.70 | 1.04 | 1.06 | 1.12 | 0.77 | 1.94 | 2.29 | 1.33 | 1.27 | 1.06 | 0.87 | 14.23 |
| Highest Precipitation (in.) | 3.34 | 2.37 | 2.96 | 2.51 | 3.51 | 2.25 | 5.51 | 6.60 | 3.89 | 3.88 | 2.79 | 3.72 | 6.60 |
| Year Highest Occurred | 1980 | 1987 | 2000 | 1999 | 1992 | 1995 | 1981 | 1982 | 1985 | 1996 | 1978 | 1973 | 1982 |
| Lowest Precipitation (in.) | 0.03 | 0.02 | 0.17 | 0.32 | 0.03 | 0.00 | 0.18 | 0.69 | 0.15 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1971 | 1972 | 1997 | 1988 | 1998 | 1980 | 1993 | 1978 | 1974 | 1973 | 1999 | 1976 | 1980 |
| Heating Degree Days (F) | 1489. | 1209. | 1085. | 797. | 557. | 273. | 145. | 199. | 367. | 677. | 1075. | 1434. | 9307. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 4. | 10. | 5. | 0. | 0. | 0. | 0. | 19. |