| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.8 | 34.0 | 40.5 | 48.6 | 58.8 | 70.9 | 77.1 | 75.4 | 66.7 | 54.8 | 38.8 | 31.6 | 52.3 |
| Highest Mean Max. Temperature (F) | 38.1 | 45.0 | 48.5 | 56.8 | 66.3 | 76.5 | 81.1 | 78.0 | 73.3 | 61.3 | 47.1 | 41.7 | 81.1 |
| Year Highest Occurred | 1986 | 1995 | 1972 | 2000 | 2000 | 1994 | 1994 | 1996 | 1979 | 1988 | 1999 | 1980 | 1994 |
| Lowest Mean Max. Temperature (F) | 21.5 | 28.4 | 33.3 | 40.0 | 52.3 | 64.9 | 72.9 | 71.9 | 60.2 | 47.2 | 33.2 | 23.1 | 21.5 |
| Year Lowest Occurred | 1979 | 1979 | 1973 | 1975 | 1995 | 1995 | 1987 | 1999 | 1986 | 1984 | 1994 | 1978 | 1979 |
| Mean Temperature (F) | 21.6 | 24.9 | 31.2 | 38.3 | 47.3 | 57.4 | 64.2 | 62.5 | 53.8 | 43.1 | 29.6 | 22.6 | 41.4 |
| Highest Mean Temperature (F) | 28.8 | 35.5 | 36.7 | 45.6 | 53.1 | 62.4 | 67.1 | 65.6 | 58.4 | 48.6 | 37.2 | 30.4 | 67.1 |
| Year Highest Occurred | 1999 | 1995 | 1999 | 1992 | 2000 | 1994 | 1996 | 1994 | 1979 | 1988 | 1995 | 1980 | 1996 |
| Lowest Mean Temperature (F) | 13.1 | 18.1 | 25.9 | 31.2 | 42.6 | 52.8 | 60.9 | 59.7 | 48.6 | 37.2 | 23.7 | 15.0 | 13.1 |
| Year Lowest Occurred | 1979 | 1979 | 1976 | 1975 | 1975 | 1998 | 1987 | 1989 | 1986 | 1984 | 1994 | 1990 | 1979 |
| Mean Min. Temperature (F) | 12.3 | 15.7 | 21.8 | 28.0 | 35.8 | 43.8 | 51.3 | 49.5 | 40.9 | 31.4 | 20.3 | 13.6 | 30.4 |
| Highest Mean Min. Temperature (F) | 20.6 | 26.0 | 26.2 | 34.5 | 39.9 | 48.3 | 54.3 | 53.4 | 45.3 | 35.8 | 27.2 | 19.9 | 54.3 |
| Year Highest Occurred | 1999 | 1995 | 1986 | 1992 | 2000 | 1994 | 1996 | 1994 | 1990 | 1988 | 1995 | 1995 | 1996 |
| Lowest Mean Min. Temperature (F) | 4.0 | 7.7 | 14.7 | 22.3 | 30.6 | 40.1 | 48.0 | 45.7 | 36.2 | 27.1 | 14.1 | 5.6 | 4.0 |
| Year Lowest Occurred | 1973 | 1979 | 1976 | 1975 | 1975 | 1998 | 1993 | 1975 | 1971 | 1984 | 1994 | 1990 | 1973 |
| Mean Precipitation (in.) | 1.03 | 0.90 | 1.25 | 1.01 | 1.20 | 0.79 | 1.39 | 1.71 | 1.69 | 1.36 | 1.01 | 0.85 | 14.19 |
| Highest Precipitation (in.) | 2.22 | 2.62 | 2.33 | 2.23 | 3.28 | 2.84 | 3.51 | 3.21 | 7.04 | 3.26 | 2.35 | 2.86 | 7.04 |
| Year Highest Occurred | 1996 | 1998 | 1995 | 1999 | 1995 | 1984 | 1984 | 1984 | 1982 | 1998 | 1983 | 1983 | 1982 |
| Lowest Precipitation (in.) | 0.15 | 0.10 | 0.14 | 0.02 | 0.08 | 0.06 | 0.23 | 0.11 | 0.10 | 0.14 | 0.06 | 0.06 | 0.02 |
| Year Lowest Occurred | 1992 | 1988 | 1999 | 2000 | 1990 | 1980 | 1993 | 1985 | 1979 | 1999 | 1999 | 1976 | 2000 |
| Heating Degree Days (F) | 1348. | 1125. | 1049. | 802. | 548. | 246. | 70. | 103. | 339. | 679. | 1063. | 1316. | 8688. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 17. | 46. | 22. | 2. | 0. | 0. | 0. | 87. |