| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 46.0 | 51.4 | 56.1 | 61.1 | 67.5 | 74.0 | 81.1 | 82.1 | 77.1 | 66.2 | 50.9 | 44.6 | 63.2 |
| Highest Mean Max. Temperature (F) | 52.9 | 58.9 | 63.2 | 70.8 | 75.3 | 81.4 | 88.8 | 88.9 | 86.3 | 77.3 | 59.9 | 50.3 | 88.9 |
| Year Highest Occurred | 1981 | 1977 | 1986 | 1987 | 1992 | 1987 | 1985 | 1986 | 1974 | 1987 | 1976 | 1979 | 1986 |
| Lowest Mean Max. Temperature (F) | 41.0 | 45.1 | 49.5 | 54.6 | 60.1 | 68.0 | 72.3 | 76.6 | 69.8 | 60.1 | 41.7 | 37.4 | 37.4 |
| Year Lowest Occurred | 1993 | 1999 | 1971 | 1975 | 1998 | 1980 | 1993 | 1976 | 1986 | 1997 | 1994 | 1990 | 1990 |
| Mean Temperature (F) | 38.4 | 41.9 | 45.3 | 49.5 | 55.1 | 60.7 | 65.8 | 66.0 | 61.1 | 52.8 | 43.1 | 38.0 | 51.5 |
| Highest Mean Temperature (F) | 43.0 | 46.5 | 50.3 | 54.5 | 60.3 | 64.8 | 69.9 | 70.4 | 65.0 | 57.6 | 47.9 | 42.9 | 70.4 |
| Year Highest Occurred | 1981 | 1992 | 1978 | 1987 | 1992 | 1987 | 1985 | 1977 | 1974 | 1988 | 1976 | 1977 | 1977 |
| Lowest Mean Temperature (F) | 34.8 | 35.2 | 40.5 | 44.1 | 51.1 | 57.2 | 60.4 | 62.1 | 56.7 | 49.6 | 36.4 | 31.3 | 31.3 |
| Year Lowest Occurred | 1991 | 1989 | 1971 | 1975 | 1991 | 1980 | 1993 | 1995 | 1986 | 1971 | 1994 | 1990 | 1990 |
| Mean Min. Temperature (F) | 30.8 | 32.3 | 34.5 | 37.8 | 42.6 | 47.3 | 50.5 | 49.9 | 45.0 | 39.3 | 35.3 | 31.4 | 39.7 |
| Highest Mean Min. Temperature (F) | 35.7 | 35.6 | 38.2 | 41.7 | 45.4 | 50.7 | 54.4 | 54.0 | 49.3 | 44.0 | 39.9 | 36.8 | 54.4 |
| Year Highest Occurred | 1998 | 1992 | 1978 | 1992 | 1993 | 1992 | 1998 | 1990 | 1990 | 1979 | 1995 | 1977 | 1998 |
| Lowest Mean Min. Temperature (F) | 25.2 | 24.8 | 30.9 | 33.7 | 39.7 | 44.0 | 47.3 | 46.2 | 41.9 | 34.4 | 28.9 | 25.3 | 24.8 |
| Year Lowest Occurred | 1977 | 1989 | 1985 | 1975 | 1982 | 1976 | 1999 | 1980 | 1999 | 1974 | 1993 | 1990 | 1989 |
| Mean Precipitation (in.) | 6.31 | 5.05 | 4.82 | 4.08 | 3.01 | 1.78 | 0.66 | 1.04 | 1.64 | 3.29 | 7.17 | 6.88 | 45.73 |
| Highest Precipitation (in.) | 11.79 | 10.32 | 8.59 | 7.20 | 7.12 | 3.90 | 2.36 | 4.69 | 6.13 | 7.24 | 17.89 | 17.20 | 17.89 |
| Year Highest Occurred | 1971 | 1986 | 1972 | 1993 | 1996 | 1995 | 1983 | 1976 | 1986 | 1979 | 1973 | 1981 | 1973 |
| Lowest Precipitation (in.) | 0.47 | 1.28 | 0.67 | 1.61 | 0.42 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.40 | 1.22 | 0.00 |
| Year Lowest Occurred | 1985 | 1989 | 1992 | 1977 | 1982 | 1987 | 1998 | 2000 | 1999 | 1987 | 1976 | 1976 | 1987 |
| Heating Degree Days (F) | 825. | 649. | 611. | 466. | 311. | 154. | 55. | 53. | 144. | 381. | 656. | 837. | 5142. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 2. | 22. | 80. | 83. | 26. | 1. | 0. | 0. | 214. |