| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 38.9 | 39.6 | 45.0 | 53.2 | 62.3 | 71.3 | 77.4 | 77.2 | 70.8 | 61.7 | 52.9 | 44.1 | 57.9 |
| Highest Mean Max. Temperature (F) | 44.7 | 46.4 | 50.3 | 61.2 | 65.8 | 75.2 | 82.2 | 80.7 | 75.3 | 66.4 | 57.5 | 51.2 | 82.2 |
| Year Highest Occurred | 1998 | 1976 | 2000 | 1976 | 1976 | 1999 | 1994 | 1995 | 1983 | 1995 | 1994 | 1984 | 1994 |
| Lowest Mean Max. Temperature (F) | 28.7 | 28.3 | 39.7 | 49.8 | 59.0 | 67.6 | 73.9 | 74.4 | 68.0 | 56.9 | 45.5 | 34.0 | 28.3 |
| Year Lowest Occurred | 1977 | 1979 | 1978 | 1972 | 1997 | 1972 | 1978 | 1981 | 1990 | 1976 | 1976 | 1989 | 1979 |
| Mean Temperature (F) | 32.8 | 33.9 | 39.1 | 46.9 | 55.8 | 64.6 | 70.7 | 70.6 | 64.1 | 55.2 | 46.9 | 37.8 | 51.5 |
| Highest Mean Temperature (F) | 39.4 | 39.8 | 43.5 | 52.4 | 59.5 | 68.8 | 75.3 | 74.5 | 67.7 | 60.0 | 51.5 | 44.2 | 75.3 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1976 | 1991 | 1999 | 1994 | 1990 | 1998 | 1971 | 1979 | 1984 | 1994 |
| Lowest Mean Temperature (F) | 23.2 | 23.0 | 34.7 | 43.4 | 52.8 | 61.9 | 67.3 | 67.7 | 60.8 | 50.9 | 40.1 | 26.9 | 23.0 |
| Year Lowest Occurred | 1977 | 1979 | 1978 | 1975 | 1997 | 1972 | 1978 | 1982 | 1978 | 1976 | 1976 | 1989 | 1979 |
| Mean Min. Temperature (F) | 26.7 | 28.1 | 33.2 | 40.5 | 49.2 | 57.8 | 63.9 | 63.9 | 57.4 | 48.7 | 40.8 | 31.5 | 45.1 |
| Highest Mean Min. Temperature (F) | 36.1 | 35.1 | 38.3 | 44.9 | 53.9 | 62.4 | 68.4 | 68.5 | 61.3 | 54.7 | 46.0 | 37.5 | 68.5 |
| Year Highest Occurred | 1995 | 1998 | 1991 | 1991 | 1991 | 1999 | 1994 | 1990 | 1999 | 1990 | 1979 | 1996 | 1990 |
| Lowest Mean Min. Temperature (F) | 17.6 | 17.8 | 28.5 | 36.7 | 46.0 | 55.5 | 60.5 | 60.2 | 53.5 | 43.4 | 34.7 | 19.7 | 17.6 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1975 | 1994 | 1992 | 1976 | 1982 | 1978 | 1974 | 1976 | 1989 | 1977 |
| Mean Precipitation (in.) | 3.68 | 3.04 | 3.99 | 3.72 | 3.40 | 2.77 | 2.62 | 3.00 | 3.19 | 3.04 | 3.77 | 3.57 | 39.79 |
| Highest Precipitation (in.) | 8.83 | 6.88 | 8.05 | 9.21 | 6.09 | 8.66 | 7.09 | 8.98 | 6.85 | 7.03 | 9.11 | 6.66 | 9.21 |
| Year Highest Occurred | 1979 | 1971 | 1980 | 1983 | 1984 | 1982 | 1989 | 1976 | 1999 | 1996 | 1988 | 1973 | 1983 |
| Lowest Precipitation (in.) | 0.25 | 0.79 | 1.07 | 0.83 | 1.42 | 0.48 | 0.31 | 0.16 | 0.33 | 0.46 | 0.89 | 0.93 | 0.16 |
| Year Lowest Occurred | 1985 | 1987 | 1979 | 1985 | 1993 | 1999 | 1994 | 1984 | 1971 | 1994 | 1984 | 1985 | 1984 |
| Heating Degree Days (F) | 999. | 872. | 803. | 545. | 289. | 64. | 9. | 4. | 74. | 309. | 545. | 843. | 5356. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 51. | 184. | 177. | 48. | 5. | 0. | 0. | 466. |