| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 47.4 | 52.6 | 61.9 | 71.2 | 79.1 | 86.7 | 90.5 | 89.6 | 83.3 | 73.1 | 61.4 | 51.5 | 70.7 |
| Highest Mean Max. Temperature (F) | 55.2 | 60.7 | 67.3 | 77.4 | 86.6 | 93.6 | 95.0 | 94.7 | 91.8 | 79.3 | 69.4 | 60.5 | 95.0 |
| Year Highest Occurred | 1990 | 1976 | 2000 | 1981 | 1987 | 1988 | 1986 | 1987 | 1998 | 1971 | 1999 | 1984 | 1986 |
| Lowest Mean Max. Temperature (F) | 33.9 | 39.0 | 56.1 | 64.6 | 74.5 | 79.4 | 86.1 | 84.2 | 76.4 | 66.1 | 53.8 | 39.3 | 33.9 |
| Year Lowest Occurred | 1977 | 1978 | 1996 | 1983 | 1997 | 1997 | 1979 | 1992 | 1974 | 1976 | 1976 | 1989 | 1977 |
| Mean Temperature (F) | 36.9 | 40.9 | 49.7 | 58.0 | 66.5 | 74.7 | 78.7 | 77.2 | 70.5 | 58.9 | 49.3 | 40.6 | 58.5 |
| Highest Mean Temperature (F) | 45.1 | 48.7 | 55.4 | 64.8 | 73.1 | 77.7 | 81.8 | 81.5 | 75.7 | 65.9 | 56.4 | 50.0 | 81.8 |
| Year Highest Occurred | 1974 | 1990 | 1973 | 1981 | 1987 | 1987 | 1993 | 1995 | 1998 | 1984 | 1985 | 1984 | 1993 |
| Lowest Mean Temperature (F) | 23.4 | 28.7 | 44.1 | 52.6 | 61.8 | 70.0 | 75.6 | 72.3 | 65.3 | 53.3 | 40.9 | 29.0 | 23.4 |
| Year Lowest Occurred | 1977 | 1978 | 1996 | 1983 | 1997 | 1974 | 1984 | 1992 | 1974 | 1987 | 1976 | 1989 | 1977 |
| Mean Min. Temperature (F) | 26.4 | 29.2 | 37.5 | 44.8 | 53.9 | 62.6 | 66.8 | 64.8 | 57.7 | 44.7 | 37.2 | 29.7 | 46.3 |
| Highest Mean Min. Temperature (F) | 35.6 | 37.6 | 43.6 | 52.3 | 60.6 | 66.3 | 69.9 | 70.6 | 62.0 | 54.2 | 46.5 | 39.5 | 70.6 |
| Year Highest Occurred | 1974 | 1990 | 1973 | 1981 | 1991 | 1994 | 1993 | 1995 | 1978 | 1984 | 1985 | 1984 | 1995 |
| Lowest Mean Min. Temperature (F) | 12.9 | 18.5 | 32.0 | 39.5 | 48.6 | 58.0 | 63.4 | 60.5 | 54.0 | 37.0 | 27.9 | 18.7 | 12.9 |
| Year Lowest Occurred | 1977 | 1978 | 1971 | 1997 | 1971 | 1974 | 1984 | 1992 | 1981 | 1987 | 1976 | 1989 | 1977 |
| Mean Precipitation (in.) | 4.86 | 4.49 | 6.39 | 4.70 | 5.72 | 3.87 | 4.89 | 3.32 | 3.97 | 3.58 | 5.24 | 6.00 | 57.03 |
| Highest Precipitation (in.) | 9.75 | 9.18 | 15.87 | 9.20 | 12.19 | 8.62 | 12.15 | 6.22 | 10.10 | 9.47 | 10.36 | 13.62 | 15.87 |
| Year Highest Occurred | 1999 | 1990 | 1973 | 1984 | 1983 | 1998 | 1984 | 1985 | 1979 | 1984 | 1983 | 1990 | 1973 |
| Lowest Precipitation (in.) | 0.42 | 1.46 | 2.09 | 1.11 | 1.59 | 0.19 | 0.90 | 0.71 | 0.21 | 0.10 | 1.54 | 1.37 | 0.10 |
| Year Lowest Occurred | 1986 | 1995 | 1987 | 1986 | 1988 | 1988 | 1993 | 1990 | 1984 | 2000 | 1976 | 1985 | 2000 |
| Heating Degree Days (F) | 871. | 675. | 477. | 235. | 80. | 3. | 0. | 1. | 28. | 228. | 473. | 756. | 3827. |
| Cooling Degree Days (F) | 0. | 0. | 3. | 24. | 126. | 292. | 424. | 379. | 193. | 39. | 3. | 0. | 1483. |