| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 49.4 | 53.5 | 62.1 | 71.3 | 78.6 | 85.9 | 89.8 | 88.2 | 82.6 | 72.3 | 63.0 | 53.4 | 70.8 |
| Highest Mean Max. Temperature (F) | 58.5 | 63.0 | 67.5 | 80.7 | 85.0 | 91.5 | 95.2 | 96.2 | 87.6 | 79.0 | 69.1 | 63.3 | 96.2 |
| Year Highest Occurred | 1974 | 1976 | 1976 | 1985 | 1991 | 1986 | 1986 | 1980 | 1983 | 1984 | 1985 | 1984 | 1980 |
| Lowest Mean Max. Temperature (F) | 37.4 | 41.5 | 55.7 | 66.0 | 73.7 | 80.4 | 85.3 | 83.8 | 77.2 | 65.7 | 55.7 | 41.7 | 37.4 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1975 | 1972 | 1979 | 2000 | 1996 | 1999 | 1976 | 1996 | 1989 | 1977 |
| Mean Temperature (F) | 38.5 | 41.4 | 49.6 | 57.9 | 66.4 | 74.4 | 78.5 | 76.8 | 70.8 | 59.4 | 50.4 | 42.1 | 58.9 |
| Highest Mean Temperature (F) | 48.2 | 48.7 | 53.9 | 64.1 | 72.6 | 77.8 | 82.1 | 81.8 | 74.3 | 66.7 | 58.1 | 50.2 | 82.1 |
| Year Highest Occurred | 1974 | 1990 | 1976 | 1985 | 1991 | 1986 | 1986 | 1980 | 1980 | 1984 | 1985 | 1971 | 1986 |
| Lowest Mean Temperature (F) | 27.0 | 30.2 | 44.5 | 53.9 | 62.3 | 69.3 | 75.4 | 72.8 | 66.6 | 53.8 | 41.8 | 32.4 | 27.0 |
| Year Lowest Occurred | 1977 | 1978 | 1996 | 1975 | 1997 | 1979 | 1975 | 1981 | 1981 | 1976 | 1976 | 1989 | 1977 |
| Mean Min. Temperature (F) | 27.5 | 29.3 | 37.1 | 44.5 | 54.2 | 62.8 | 67.2 | 65.3 | 58.9 | 46.5 | 37.7 | 30.8 | 46.8 |
| Highest Mean Min. Temperature (F) | 37.8 | 35.2 | 43.3 | 48.7 | 60.2 | 66.2 | 70.5 | 68.1 | 62.1 | 56.5 | 47.0 | 38.3 | 70.5 |
| Year Highest Occurred | 1974 | 1998 | 1973 | 1991 | 1991 | 1994 | 1994 | 1999 | 1998 | 1971 | 1985 | 1971 | 1994 |
| Lowest Mean Min. Temperature (F) | 16.7 | 18.8 | 30.6 | 39.5 | 48.6 | 58.2 | 63.9 | 61.3 | 54.1 | 37.5 | 27.6 | 23.1 | 16.7 |
| Year Lowest Occurred | 1977 | 1978 | 1981 | 1971 | 1997 | 1979 | 1976 | 1976 | 1981 | 1987 | 1976 | 1989 | 1977 |
| Mean Precipitation (in.) | 4.15 | 3.29 | 4.26 | 3.20 | 4.24 | 3.71 | 4.76 | 4.16 | 4.39 | 3.46 | 3.01 | 3.22 | 45.85 |
| Highest Precipitation (in.) | 8.20 | 6.08 | 8.97 | 8.11 | 8.32 | 8.16 | 13.83 | 11.51 | 25.04 | 9.09 | 6.35 | 7.93 | 25.04 |
| Year Highest Occurred | 1999 | 1983 | 1994 | 1989 | 1979 | 1995 | 1975 | 1986 | 1999 | 1971 | 1985 | 1973 | 1999 |
| Lowest Precipitation (in.) | 0.85 | 0.84 | 1.54 | 0.40 | 0.78 | 1.59 | 1.29 | 0.10 | 0.31 | 0.00 | 0.66 | 0.83 | 0.00 |
| Year Lowest Occurred | 1981 | 1991 | 1986 | 1976 | 1999 | 1983 | 1990 | 1980 | 1986 | 2000 | 1981 | 1994 | 2000 |
| Heating Degree Days (F) | 822. | 662. | 479. | 225. | 63. | 4. | 0. | 0. | 15. | 216. | 444. | 710. | 3640. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 13. | 105. | 284. | 418. | 363. | 187. | 42. | 4. | 0. | 1416. |