| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 37.2 | 41.4 | 51.2 | 62.8 | 73.2 | 80.8 | 84.3 | 82.7 | 76.3 | 65.1 | 52.9 | 42.0 | 62.5 |
| Highest Mean Max. Temperature (F) | 47.7 | 50.3 | 59.2 | 68.6 | 81.2 | 85.2 | 89.5 | 87.2 | 81.1 | 71.6 | 59.7 | 50.9 | 89.5 |
| Year Highest Occurred | 1989 | 1976 | 1973 | 1986 | 1991 | 1994 | 1999 | 1995 | 1998 | 1971 | 1999 | 1982 | 1999 |
| Lowest Mean Max. Temperature (F) | 22.9 | 29.3 | 43.4 | 58.6 | 67.6 | 76.1 | 79.6 | 78.4 | 71.5 | 56.5 | 44.4 | 29.4 | 22.9 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1997 | 1997 | 1972 | 1984 | 1992 | 1974 | 1976 | 1976 | 1989 | 1977 |
| Mean Temperature (F) | 28.6 | 31.4 | 40.1 | 50.3 | 60.9 | 69.2 | 73.2 | 71.4 | 64.9 | 53.6 | 42.9 | 33.7 | 51.7 |
| Highest Mean Temperature (F) | 38.8 | 40.1 | 46.5 | 54.9 | 68.7 | 72.4 | 77.0 | 76.3 | 68.5 | 58.4 | 48.9 | 40.8 | 77.0 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1986 | 1991 | 1991 | 1999 | 1995 | 1973 | 1985 | 1985 | 1982 | 1999 |
| Lowest Mean Temperature (F) | 13.6 | 19.0 | 33.5 | 45.2 | 55.8 | 64.3 | 69.2 | 67.8 | 61.5 | 46.9 | 34.3 | 21.5 | 13.6 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1971 | 1997 | 1972 | 2000 | 1992 | 1974 | 1976 | 1976 | 1989 | 1977 |
| Mean Min. Temperature (F) | 19.9 | 21.4 | 28.9 | 37.8 | 48.6 | 57.5 | 62.0 | 60.1 | 53.4 | 42.0 | 32.9 | 25.4 | 40.8 |
| Highest Mean Min. Temperature (F) | 30.8 | 31.4 | 33.7 | 43.2 | 56.2 | 61.0 | 65.7 | 65.4 | 57.2 | 48.9 | 42.3 | 31.1 | 65.7 |
| Year Highest Occurred | 1998 | 1998 | 1973 | 1991 | 1991 | 1973 | 1987 | 1995 | 1977 | 1984 | 1985 | 1987 | 1987 |
| Lowest Mean Min. Temperature (F) | 4.2 | 8.7 | 23.1 | 29.1 | 42.0 | 52.5 | 56.9 | 54.1 | 49.8 | 36.8 | 24.1 | 13.5 | 4.2 |
| Year Lowest Occurred | 1977 | 1979 | 1972 | 1971 | 1971 | 1972 | 1971 | 1971 | 1976 | 1972 | 1976 | 1989 | 1977 |
| Mean Precipitation (in.) | 2.72 | 2.33 | 3.19 | 3.23 | 4.50 | 4.13 | 4.47 | 3.47 | 2.92 | 2.59 | 3.13 | 2.81 | 39.49 |
| Highest Precipitation (in.) | 9.40 | 5.09 | 5.99 | 6.71 | 12.37 | 8.25 | 9.22 | 11.22 | 7.09 | 5.38 | 14.56 | 6.31 | 14.56 |
| Year Highest Occurred | 1999 | 1975 | 1997 | 1981 | 1989 | 1980 | 1980 | 1975 | 1974 | 1983 | 1985 | 1978 | 1985 |
| Lowest Precipitation (in.) | 0.54 | 0.00 | 1.24 | 0.21 | 1.57 | 1.41 | 1.69 | 1.22 | 0.35 | 0.83 | 0.56 | 0.81 | 0.00 |
| Year Lowest Occurred | 1981 | 1987 | 1979 | 1971 | 1972 | 1991 | 1973 | 1986 | 1985 | 1999 | 2000 | 1988 | 1987 |
| Heating Degree Days (F) | 1130. | 940. | 773. | 442. | 187. | 23. | 5. | 13. | 73. | 363. | 664. | 969. | 5582. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 58. | 148. | 257. | 212. | 69. | 9. | 0. | 0. | 754. |