| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 25.0 | 31.4 | 44.2 | 59.9 | 72.3 | 81.2 | 84.1 | 81.9 | 74.6 | 62.3 | 43.2 | 29.1 | 57.4 |
| Highest Mean Max. Temperature (F) | 38.2 | 42.8 | 54.2 | 68.7 | 80.9 | 88.8 | 88.9 | 89.0 | 81.0 | 69.2 | 54.9 | 38.4 | 89.0 |
| Year Highest Occurred | 1990 | 1976 | 2000 | 1977 | 1977 | 1988 | 1988 | 1983 | 1998 | 1975 | 1999 | 1979 | 1983 |
| Lowest Mean Max. Temperature (F) | 12.5 | 20.7 | 33.9 | 50.8 | 65.4 | 76.1 | 76.6 | 76.5 | 66.3 | 57.7 | 34.4 | 15.5 | 12.5 |
| Year Lowest Occurred | 1979 | 1979 | 1975 | 1975 | 1996 | 1982 | 1992 | 1992 | 1993 | 1972 | 1996 | 1983 | 1979 |
| Mean Temperature (F) | 15.7 | 22.2 | 34.5 | 48.1 | 60.2 | 69.3 | 72.7 | 70.5 | 62.4 | 50.5 | 34.4 | 20.7 | 46.8 |
| Highest Mean Temperature (F) | 27.5 | 32.3 | 42.3 | 55.7 | 68.4 | 74.2 | 76.6 | 76.7 | 67.6 | 57.2 | 41.8 | 28.7 | 76.7 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1971 | 1974 | 1983 | 1978 | 1973 | 1999 | 1979 | 1983 |
| Lowest Mean Temperature (F) | 3.6 | 10.6 | 25.0 | 42.0 | 53.6 | 64.4 | 66.7 | 64.8 | 56.0 | 43.9 | 26.6 | 7.1 | 3.6 |
| Year Lowest Occurred | 1979 | 1979 | 1975 | 1975 | 1997 | 1982 | 1992 | 1992 | 1993 | 1988 | 1996 | 2000 | 1979 |
| Mean Min. Temperature (F) | 6.3 | 13.0 | 24.7 | 36.3 | 48.1 | 57.4 | 61.2 | 59.0 | 50.1 | 38.7 | 25.5 | 12.2 | 36.0 |
| Highest Mean Min. Temperature (F) | 16.8 | 25.7 | 33.8 | 42.6 | 55.9 | 62.6 | 64.5 | 64.3 | 54.5 | 46.4 | 30.8 | 20.6 | 64.5 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1991 | 1974 | 1995 | 1990 | 1971 | 1983 | 1997 | 1974 |
| Lowest Mean Min. Temperature (F) | -7.3 | 0.5 | 16.1 | 31.4 | 40.6 | 52.8 | 56.7 | 53.1 | 45.2 | 30.0 | 18.3 | -3.9 | -7.3 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1997 | 1997 | 1982 | 1992 | 1992 | 1974 | 1988 | 1976 | 2000 | 1977 |
| Mean Precipitation (in.) | 0.93 | 0.87 | 2.01 | 3.41 | 4.08 | 5.19 | 4.61 | 4.57 | 3.36 | 2.45 | 2.13 | 1.08 | 34.69 |
| Highest Precipitation (in.) | 1.99 | 2.84 | 4.40 | 7.70 | 8.62 | 10.09 | 18.48 | 13.60 | 11.77 | 4.44 | 5.34 | 3.19 | 18.48 |
| Year Highest Occurred | 1980 | 1971 | 1990 | 1991 | 1983 | 2000 | 1999 | 1979 | 1972 | 1972 | 1991 | 1982 | 1999 |
| Lowest Precipitation (in.) | 0.08 | 0.00 | 0.25 | 0.66 | 1.56 | 1.66 | 0.80 | 0.88 | 0.60 | 0.41 | 0.00 | 0.21 | 0.00 |
| Year Lowest Occurred | 1976 | 1987 | 1994 | 1997 | 1985 | 1988 | 1985 | 1971 | 1975 | 1987 | 1976 | 1998 | 1987 |
| Heating Degree Days (F) | 1530. | 1198. | 947. | 511. | 210. | 29. | 10. | 26. | 130. | 451. | 920. | 1375. | 7337. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 4. | 60. | 158. | 247. | 194. | 50. | 2. | 0. | 0. | 715. |