| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 33.8 | 39.4 | 48.4 | 59.8 | 71.2 | 81.9 | 88.3 | 86.9 | 77.2 | 63.5 | 45.9 | 36.7 | 61.1 |
| Highest Mean Max. Temperature (F) | 46.0 | 50.0 | 55.7 | 69.9 | 78.0 | 91.5 | 95.1 | 93.9 | 84.9 | 68.1 | 61.1 | 47.5 | 95.1 |
| Year Highest Occurred | 1990 | 1999 | 1981 | 1981 | 1985 | 1988 | 1974 | 1983 | 1979 | 1975 | 1999 | 1979 | 1974 |
| Lowest Mean Max. Temperature (F) | 16.7 | 23.1 | 37.5 | 51.1 | 62.6 | 75.1 | 77.6 | 79.5 | 69.2 | 58.5 | 28.4 | 16.3 | 16.3 |
| Year Lowest Occurred | 1979 | 1978 | 1998 | 1995 | 1995 | 1998 | 1992 | 1992 | 1973 | 1972 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 20.8 | 26.6 | 35.3 | 46.1 | 57.5 | 67.6 | 73.7 | 72.1 | 61.5 | 48.3 | 33.0 | 23.6 | 47.2 |
| Highest Mean Temperature (F) | 32.3 | 36.3 | 41.7 | 54.3 | 63.0 | 76.1 | 78.5 | 78.2 | 69.3 | 51.8 | 43.4 | 32.4 | 78.5 |
| Year Highest Occurred | 1990 | 1999 | 1986 | 1981 | 1977 | 1988 | 1974 | 1983 | 1998 | 1973 | 1999 | 1979 | 1974 |
| Lowest Mean Temperature (F) | 4.5 | 10.7 | 26.9 | 39.9 | 52.5 | 62.5 | 65.5 | 66.2 | 56.8 | 44.2 | 18.3 | 4.1 | 4.1 |
| Year Lowest Occurred | 1979 | 1978 | 1996 | 1997 | 1995 | 1982 | 1992 | 1992 | 1973 | 1976 | 1985 | 1983 | 1983 |
| Mean Min. Temperature (F) | 7.8 | 13.7 | 22.1 | 32.4 | 43.7 | 53.2 | 59.1 | 57.3 | 45.8 | 33.1 | 20.1 | 10.5 | 33.2 |
| Highest Mean Min. Temperature (F) | 18.7 | 24.9 | 28.7 | 38.7 | 49.6 | 60.8 | 63.4 | 62.4 | 53.8 | 37.5 | 27.5 | 19.1 | 63.4 |
| Year Highest Occurred | 1983 | 1998 | 1973 | 1981 | 1977 | 1988 | 1998 | 1983 | 1998 | 1994 | 1998 | 1993 | 1998 |
| Lowest Mean Min. Temperature (F) | -7.8 | -1.8 | 14.4 | 27.9 | 38.4 | 48.4 | 53.1 | 53.0 | 38.8 | 28.7 | 8.2 | -8.1 | -8.1 |
| Year Lowest Occurred | 1979 | 1978 | 1996 | 1982 | 1983 | 1985 | 1971 | 1992 | 1974 | 1987 | 1985 | 1983 | 1983 |
| Mean Precipitation (in.) | 0.30 | 0.48 | 1.11 | 1.97 | 3.20 | 3.01 | 3.37 | 2.20 | 1.61 | 1.22 | 0.72 | 0.33 | 19.52 |
| Highest Precipitation (in.) | 0.82 | 1.33 | 4.23 | 3.67 | 6.70 | 7.09 | 8.96 | 4.44 | 5.91 | 3.85 | 2.62 | 1.81 | 8.96 |
| Year Highest Occurred | 1979 | 1987 | 1977 | 1995 | 1982 | 1983 | 1983 | 1992 | 1973 | 1995 | 1985 | 1987 | 1983 |
| Lowest Precipitation (in.) | 0.02 | 0.06 | 0.01 | 0.46 | 0.70 | 0.44 | 0.28 | 0.12 | 0.32 | 0.05 | 0.09 | 0.00 | 0.00 |
| Year Lowest Occurred | 1995 | 1985 | 1997 | 1980 | 1985 | 1976 | 1980 | 2000 | 1975 | 1999 | 1999 | 1991 | 1991 |
| Heating Degree Days (F) | 1386. | 1091. | 932. | 571. | 260. | 57. | 11. | 19. | 175. | 516. | 952. | 1285. | 7255. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 5. | 27. | 141. | 286. | 242. | 75. | 3. | 0. | 0. | 779. |