| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 35.0 | 42.8 | 53.1 | 60.9 | 68.7 | 75.5 | 82.5 | 82.8 | 74.3 | 61.4 | 44.9 | 35.2 | 59.8 |
| Highest Mean Max. Temperature (F) | 45.1 | 50.0 | 60.1 | 67.3 | 75.6 | 82.7 | 90.5 | 88.3 | 81.6 | 68.8 | 52.4 | 41.6 | 90.5 |
| Year Highest Occurred | 1999 | 1991 | 1992 | 1987 | 1992 | 1992 | 1998 | 1986 | 1998 | 1988 | 1999 | 1999 | 1998 |
| Lowest Mean Max. Temperature (F) | 21.9 | 32.4 | 44.3 | 55.5 | 63.0 | 69.9 | 73.2 | 77.0 | 66.3 | 57.7 | 29.5 | 22.4 | 21.9 |
| Year Lowest Occurred | 1979 | 1993 | 1993 | 1975 | 1984 | 1971 | 1993 | 1976 | 1985 | 1990 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 29.2 | 35.2 | 42.3 | 48.4 | 55.8 | 62.4 | 68.2 | 68.4 | 60.5 | 49.4 | 38.0 | 29.8 | 49.0 |
| Highest Mean Temperature (F) | 38.9 | 41.0 | 47.1 | 53.6 | 59.9 | 68.4 | 75.5 | 73.0 | 66.7 | 55.6 | 43.9 | 36.1 | 75.5 |
| Year Highest Occurred | 1999 | 1992 | 1992 | 1987 | 1992 | 1992 | 1998 | 1986 | 1998 | 1988 | 1999 | 1973 | 1998 |
| Lowest Mean Temperature (F) | 13.4 | 24.6 | 37.2 | 43.9 | 50.8 | 58.7 | 61.5 | 64.0 | 54.9 | 45.8 | 23.0 | 18.4 | 13.4 |
| Year Lowest Occurred | 1979 | 1989 | 1993 | 1975 | 1984 | 1971 | 1993 | 1995 | 1985 | 1984 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 23.3 | 27.5 | 31.4 | 35.9 | 42.8 | 49.2 | 53.8 | 53.9 | 46.7 | 37.4 | 31.0 | 24.4 | 38.1 |
| Highest Mean Min. Temperature (F) | 32.7 | 34.5 | 35.5 | 39.9 | 47.1 | 54.1 | 60.5 | 58.1 | 51.8 | 42.5 | 36.9 | 31.8 | 60.5 |
| Year Highest Occurred | 1999 | 1992 | 1986 | 1987 | 1993 | 1992 | 1998 | 1977 | 1998 | 1988 | 1998 | 1973 | 1998 |
| Lowest Mean Min. Temperature (F) | 4.9 | 16.2 | 27.4 | 30.9 | 38.3 | 45.7 | 49.9 | 48.9 | 42.2 | 33.9 | 16.6 | 13.6 | 4.9 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1982 | 1999 | 1999 | 1993 | 1980 | 1999 | 1984 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.93 | 0.82 | 0.86 | 0.62 | 0.73 | 0.52 | 0.39 | 0.33 | 0.40 | 0.57 | 1.04 | 1.21 | 8.42 |
| Highest Precipitation (in.) | 2.23 | 1.81 | 2.46 | 1.49 | 2.48 | 1.44 | 1.83 | 1.69 | 1.22 | 1.83 | 3.61 | 2.86 | 3.61 |
| Year Highest Occurred | 1995 | 1983 | 1983 | 1982 | 1980 | 1995 | 1992 | 1978 | 1986 | 1982 | 1973 | 1973 | 1973 |
| Lowest Precipitation (in.) | 0.15 | 0.02 | 0.00 | 0.04 | 0.03 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.31 | 0.00 |
| Year Lowest Occurred | 1972 | 1988 | 1994 | 1977 | 1992 | 1989 | 1985 | 2000 | 1999 | 1987 | 1993 | 1976 | 1994 |
| Heating Degree Days (F) | 1112. | 836. | 707. | 497. | 292. | 133. | 49. | 41. | 183. | 484. | 811. | 1091. | 6236. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 6. | 53. | 147. | 146. | 48. | 0. | 0. | 0. | 400. |