| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 32.6 | 37.6 | 48.3 | 58.4 | 68.6 | 79.3 | 86.0 | 84.5 | 74.5 | 62.5 | 44.7 | 34.6 | 59.3 |
| Highest Mean Max. Temperature (F) | 42.1 | 47.6 | 55.4 | 66.8 | 77.3 | 88.4 | 90.1 | 89.2 | 81.2 | 69.5 | 55.8 | 46.8 | 90.1 |
| Year Highest Occurred | 1981 | 1977 | 1999 | 1987 | 2000 | 1977 | 2000 | 1994 | 1979 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 19.4 | 24.4 | 41.4 | 51.1 | 59.6 | 70.8 | 78.8 | 80.6 | 67.0 | 54.7 | 34.8 | 24.8 | 19.4 |
| Year Lowest Occurred | 1979 | 1989 | 1973 | 1975 | 1995 | 1998 | 1993 | 1975 | 1986 | 1984 | 2000 | 1983 | 1979 |
| Mean Temperature (F) | 18.9 | 23.3 | 35.0 | 43.4 | 52.3 | 61.2 | 67.4 | 65.5 | 55.7 | 44.6 | 30.5 | 20.2 | 43.2 |
| Highest Mean Temperature (F) | 28.5 | 31.8 | 40.9 | 48.7 | 59.2 | 67.9 | 70.7 | 69.5 | 63.2 | 47.2 | 38.4 | 31.1 | 70.7 |
| Year Highest Occurred | 1999 | 2000 | 1992 | 1992 | 2000 | 1977 | 1998 | 2000 | 1998 | 1988 | 1999 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 5.8 | 11.1 | 28.4 | 37.8 | 47.0 | 56.5 | 60.8 | 61.7 | 50.2 | 38.8 | 22.5 | 12.0 | 5.8 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1995 | 1998 | 1993 | 1975 | 1986 | 1984 | 2000 | 1992 | 1979 |
| Mean Min. Temperature (F) | 5.2 | 9.0 | 21.6 | 28.3 | 36.0 | 43.1 | 48.8 | 46.5 | 36.9 | 26.6 | 16.2 | 5.8 | 27.0 |
| Highest Mean Min. Temperature (F) | 16.7 | 18.5 | 27.5 | 31.9 | 41.0 | 47.3 | 52.2 | 52.0 | 46.5 | 33.4 | 23.5 | 15.4 | 52.2 |
| Year Highest Occurred | 1999 | 1995 | 1992 | 1990 | 2000 | 1977 | 1998 | 1983 | 1998 | 2000 | 1998 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -7.9 | -5.3 | 12.3 | 22.5 | 33.2 | 39.6 | 42.8 | 41.6 | 31.0 | 22.4 | 8.5 | -5.2 | -7.9 |
| Year Lowest Occurred | 1979 | 1973 | 1976 | 1982 | 1986 | 1980 | 1993 | 1988 | 1988 | 1976 | 1979 | 1992 | 1979 |
| Mean Precipitation (in.) | 0.42 | 0.36 | 0.62 | 0.89 | 1.20 | 0.79 | 0.75 | 0.63 | 0.84 | 0.68 | 0.49 | 0.35 | 8.02 |
| Highest Precipitation (in.) | 0.89 | 1.18 | 1.50 | 2.92 | 3.39 | 2.51 | 4.87 | 1.80 | 2.51 | 1.93 | 1.49 | 1.18 | 4.87 |
| Year Highest Occurred | 1980 | 1999 | 1983 | 1986 | 1971 | 1998 | 1977 | 1978 | 1973 | 1994 | 1994 | 1983 | 1977 |
| Lowest Precipitation (in.) | 0.09 | 0.00 | 0.05 | 0.01 | 0.08 | 0.00 | 0.07 | 0.00 | 0.02 | 0.01 | 0.03 | 0.05 | 0.00 |
| Year Lowest Occurred | 1986 | 1977 | 1976 | 1989 | 1994 | 1977 | 1974 | 1985 | 1979 | 1988 | 1976 | 1976 | 1977 |
| Heating Degree Days (F) | 1429. | 1168. | 932. | 649. | 395. | 152. | 39. | 68. | 290. | 634. | 1038. | 1389. | 8183. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 38. | 114. | 84. | 11. | 0. | 0. | 0. | 249. |