| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 41.5 | 45.2 | 54.6 | 65.7 | 75.9 | 83.7 | 87.6 | 85.5 | 78.7 | 67.7 | 56.6 | 46.0 | 65.7 |
| Highest Mean Max. Temperature (F) | 50.5 | 55.6 | 60.6 | 72.3 | 83.2 | 88.8 | 93.8 | 89.5 | 84.4 | 72.3 | 62.6 | 54.6 | 93.8 |
| Year Highest Occurred | 1990 | 1976 | 1977 | 1994 | 1991 | 1994 | 1999 | 1995 | 1980 | 1990 | 1975 | 1984 | 1999 |
| Lowest Mean Max. Temperature (F) | 31.0 | 31.9 | 46.8 | 59.2 | 71.0 | 78.8 | 83.7 | 82.1 | 74.3 | 61.9 | 50.4 | 34.0 | 31.0 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1973 | 1972 | 2000 | 1986 | 1975 | 1976 | 1976 | 1989 | 1977 |
| Mean Temperature (F) | 32.5 | 35.2 | 43.4 | 53.1 | 63.3 | 71.8 | 76.4 | 74.5 | 67.7 | 56.1 | 46.3 | 37.1 | 54.8 |
| Highest Mean Temperature (F) | 41.0 | 42.7 | 49.0 | 58.2 | 69.5 | 76.5 | 81.1 | 78.0 | 71.9 | 61.5 | 50.9 | 44.0 | 81.1 |
| Year Highest Occurred | 1998 | 1990 | 2000 | 1994 | 1991 | 1994 | 1999 | 1980 | 1980 | 1971 | 1975 | 1984 | 1999 |
| Lowest Mean Temperature (F) | 21.9 | 23.5 | 37.2 | 47.9 | 59.7 | 67.9 | 73.1 | 71.3 | 64.3 | 50.8 | 40.0 | 25.2 | 21.9 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1973 | 1972 | 1976 | 1982 | 1984 | 1988 | 1976 | 1989 | 1977 |
| Mean Min. Temperature (F) | 23.5 | 25.2 | 32.1 | 40.5 | 50.7 | 59.8 | 65.1 | 63.5 | 56.6 | 44.4 | 36.0 | 28.1 | 43.8 |
| Highest Mean Min. Temperature (F) | 32.4 | 32.0 | 38.0 | 44.2 | 55.8 | 64.1 | 68.3 | 67.0 | 60.0 | 52.1 | 42.3 | 33.3 | 68.3 |
| Year Highest Occurred | 1998 | 1998 | 2000 | 1994 | 1991 | 1994 | 1999 | 1988 | 1998 | 1971 | 1985 | 1984 | 1999 |
| Lowest Mean Min. Temperature (F) | 12.9 | 15.1 | 27.6 | 35.1 | 46.7 | 55.5 | 61.8 | 59.3 | 52.0 | 38.7 | 29.7 | 16.3 | 12.9 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1971 | 1971 | 1980 | 1976 | 1982 | 1984 | 1988 | 1976 | 1989 | 1977 |
| Mean Precipitation (in.) | 3.47 | 2.73 | 4.04 | 3.53 | 4.41 | 4.06 | 4.49 | 4.01 | 4.28 | 3.38 | 3.39 | 3.56 | 45.35 |
| Highest Precipitation (in.) | 8.86 | 6.32 | 8.38 | 8.91 | 8.63 | 7.83 | 13.58 | 9.90 | 12.01 | 8.50 | 7.54 | 8.89 | 13.58 |
| Year Highest Occurred | 1979 | 1971 | 2000 | 1983 | 1990 | 1972 | 1989 | 1971 | 1999 | 1976 | 1972 | 1983 | 1989 |
| Lowest Precipitation (in.) | 0.56 | 0.77 | 1.26 | 0.68 | 0.98 | 1.10 | 0.55 | 0.69 | 1.38 | 0.50 | 0.24 | 0.38 | 0.24 |
| Year Lowest Occurred | 1981 | 1980 | 1981 | 1985 | 1986 | 1988 | 1999 | 1983 | 1977 | 2000 | 1976 | 1989 | 1976 |
| Heating Degree Days (F) | 1008. | 834. | 670. | 359. | 111. | 10. | 0. | 0. | 33. | 294. | 560. | 867. | 4746. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 59. | 213. | 351. | 294. | 112. | 16. | 0. | 0. | 1047. |