| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 38.9 | 39.6 | 45.8 | 54.2 | 64.0 | 72.9 | 78.8 | 78.1 | 72.0 | 62.5 | 53.4 | 44.0 | 58.7 |
| Highest Mean Max. Temperature (F) | 44.9 | 45.5 | 49.5 | 59.3 | 68.9 | 76.3 | 83.0 | 81.3 | 75.9 | 68.3 | 59.1 | 50.1 | 83.0 |
| Year Highest Occurred | 1995 | 1976 | 2000 | 1976 | 1991 | 1999 | 1999 | 1980 | 1980 | 1971 | 1994 | 1984 | 1999 |
| Lowest Mean Max. Temperature (F) | 30.4 | 29.8 | 40.0 | 49.5 | 60.8 | 66.7 | 75.3 | 74.0 | 68.5 | 58.4 | 49.2 | 31.0 | 29.8 |
| Year Lowest Occurred | 1981 | 1979 | 1984 | 1972 | 1990 | 1982 | 1990 | 1982 | 1986 | 1988 | 1972 | 1989 | 1979 |
| Mean Temperature (F) | 30.7 | 31.4 | 37.8 | 46.0 | 55.6 | 64.6 | 70.5 | 70.1 | 63.8 | 53.8 | 45.3 | 35.9 | 50.5 |
| Highest Mean Temperature (F) | 37.6 | 37.7 | 41.8 | 49.6 | 59.2 | 67.9 | 75.1 | 72.7 | 67.6 | 59.1 | 50.2 | 41.2 | 75.1 |
| Year Highest Occurred | 1995 | 1998 | 2000 | 1976 | 1991 | 1999 | 1994 | 1980 | 1999 | 1971 | 1994 | 1984 | 1994 |
| Lowest Mean Temperature (F) | 20.7 | 21.9 | 33.1 | 41.3 | 53.1 | 59.5 | 67.5 | 65.9 | 60.6 | 50.2 | 40.6 | 23.4 | 20.7 |
| Year Lowest Occurred | 1981 | 1979 | 1984 | 1972 | 1992 | 1982 | 1992 | 1982 | 1986 | 1988 | 1976 | 1989 | 1981 |
| Mean Min. Temperature (F) | 22.4 | 23.2 | 29.8 | 37.7 | 47.1 | 56.2 | 62.2 | 62.0 | 55.5 | 45.1 | 37.2 | 27.8 | 42.2 |
| Highest Mean Min. Temperature (F) | 30.3 | 31.1 | 34.1 | 40.1 | 51.0 | 59.4 | 67.5 | 64.9 | 59.7 | 50.4 | 42.2 | 33.1 | 67.5 |
| Year Highest Occurred | 1995 | 1998 | 2000 | 1991 | 1979 | 1999 | 1994 | 1990 | 1999 | 1990 | 1985 | 1982 | 1994 |
| Lowest Mean Min. Temperature (F) | 10.9 | 13.9 | 25.7 | 33.0 | 44.1 | 52.3 | 58.8 | 57.7 | 51.7 | 41.4 | 31.7 | 15.7 | 10.9 |
| Year Lowest Occurred | 1981 | 1979 | 1978 | 1972 | 1992 | 1982 | 1992 | 1982 | 1978 | 1972 | 1976 | 1989 | 1981 |
| Mean Precipitation (in.) | 4.09 | 3.29 | 4.48 | 4.25 | 3.55 | 3.51 | 3.10 | 3.96 | 3.48 | 3.95 | 4.12 | 4.28 | 46.06 |
| Highest Precipitation (in.) | 8.69 | 5.75 | 8.22 | 9.93 | 6.80 | 7.92 | 9.73 | 11.70 | 12.60 | 8.83 | 8.71 | 9.38 | 12.60 |
| Year Highest Occurred | 1978 | 1971 | 1983 | 1987 | 1971 | 1981 | 1984 | 1985 | 1996 | 1996 | 1988 | 1992 | 1996 |
| Lowest Precipitation (in.) | 1.40 | 1.12 | 1.15 | 1.49 | 1.10 | 0.26 | 0.78 | 0.41 | 0.60 | 1.58 | 1.08 | 0.93 | 0.26 |
| Year Lowest Occurred | 1989 | 1980 | 1981 | 1985 | 1986 | 1971 | 1974 | 1984 | 1971 | 1971 | 1996 | 1989 | 1971 |
| Heating Degree Days (F) | 1065. | 941. | 843. | 571. | 293. | 64. | 7. | 6. | 80. | 349. | 592. | 902. | 5713. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 51. | 178. | 163. | 41. | 2. | 0. | 0. | 436. |