| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 37.3 | 42.0 | 48.1 | 57.2 | 66.5 | 77.1 | 84.7 | 82.8 | 73.5 | 61.5 | 46.2 | 39.0 | 59.7 |
| Highest Mean Max. Temperature (F) | 46.1 | 52.0 | 55.6 | 65.3 | 73.8 | 83.5 | 90.0 | 89.4 | 80.6 | 65.6 | 59.7 | 49.1 | 90.0 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1981 | 1994 | 1994 | 2000 | 2000 | 1998 | 1975 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 25.0 | 27.7 | 41.9 | 47.8 | 55.1 | 70.2 | 78.5 | 77.8 | 67.5 | 55.8 | 34.4 | 24.9 | 24.9 |
| Year Lowest Occurred | 1979 | 1989 | 1980 | 1984 | 1995 | 1982 | 1992 | 1992 | 1973 | 1984 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 24.3 | 28.6 | 34.6 | 42.7 | 52.5 | 62.5 | 69.2 | 67.5 | 57.8 | 46.2 | 33.0 | 25.9 | 45.4 |
| Highest Mean Temperature (F) | 33.2 | 36.6 | 41.5 | 49.3 | 58.2 | 68.1 | 72.5 | 71.8 | 63.7 | 48.6 | 41.0 | 34.0 | 72.5 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1981 | 1994 | 1988 | 2000 | 2000 | 1998 | 1973 | 1999 | 1980 | 2000 |
| Lowest Mean Temperature (F) | 11.7 | 17.3 | 29.9 | 36.6 | 45.6 | 57.7 | 64.7 | 63.6 | 54.2 | 42.1 | 23.9 | 12.7 | 11.7 |
| Year Lowest Occurred | 1979 | 1989 | 1980 | 1984 | 1995 | 1982 | 1992 | 1992 | 1985 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 11.3 | 15.2 | 21.1 | 28.1 | 38.5 | 47.9 | 53.6 | 52.1 | 42.1 | 30.9 | 19.7 | 12.7 | 31.1 |
| Highest Mean Min. Temperature (F) | 20.3 | 21.9 | 27.4 | 33.2 | 43.8 | 53.3 | 56.3 | 55.5 | 48.1 | 34.2 | 26.6 | 18.8 | 56.3 |
| Year Highest Occurred | 1986 | 1992 | 1986 | 1981 | 1987 | 1988 | 1998 | 1983 | 1990 | 1994 | 1998 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -1.5 | 6.9 | 15.5 | 23.2 | 34.3 | 42.7 | 50.0 | 48.6 | 37.1 | 25.3 | 13.3 | 0.4 | -1.5 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1997 | 1983 | 1998 | 1972 | 1974 | 1974 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.34 | 0.29 | 0.92 | 1.22 | 2.76 | 1.95 | 2.46 | 1.97 | 1.71 | 1.00 | 0.68 | 0.36 | 15.66 |
| Highest Precipitation (in.) | 0.79 | 0.87 | 3.29 | 3.62 | 6.10 | 4.15 | 4.93 | 3.96 | 3.81 | 4.11 | 1.56 | 0.83 | 6.10 |
| Year Highest Occurred | 1980 | 1993 | 1990 | 1999 | 1988 | 1995 | 1999 | 1997 | 1973 | 1998 | 1983 | 1998 | 1988 |
| Lowest Precipitation (in.) | 0.01 | 0.01 | 0.05 | 0.09 | 0.77 | 0.66 | 0.97 | 0.47 | 0.37 | 0.03 | 0.14 | 0.00 | 0.00 |
| Year Lowest Occurred | 1998 | 1999 | 1994 | 1992 | 1994 | 1990 | 1993 | 1988 | 1992 | 1988 | 1989 | 1996 | 1996 |
| Heating Degree Days (F) | 1261. | 1020. | 942. | 671. | 392. | 130. | 18. | 40. | 235. | 582. | 962. | 1215. | 7468. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 4. | 55. | 147. | 115. | 20. | 0. | 0. | 0. | 341. |