| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 43.1 | 48.1 | 54.5 | 61.5 | 69.1 | 77.7 | 86.4 | 86.0 | 77.8 | 65.9 | 50.3 | 42.7 | 63.6 |
| Highest Mean Max. Temperature (F) | 49.6 | 57.2 | 60.8 | 70.5 | 77.4 | 84.4 | 93.4 | 92.4 | 85.9 | 76.0 | 60.1 | 51.6 | 93.4 |
| Year Highest Occurred | 1994 | 1991 | 1986 | 2000 | 1992 | 1974 | 1985 | 1998 | 1998 | 1988 | 1999 | 1989 | 1985 |
| Lowest Mean Max. Temperature (F) | 26.4 | 35.9 | 47.7 | 54.2 | 61.8 | 70.9 | 74.5 | 78.3 | 68.9 | 58.3 | 39.9 | 31.3 | 26.4 |
| Year Lowest Occurred | 1979 | 1993 | 1975 | 1975 | 1977 | 1991 | 1993 | 1976 | 1986 | 1984 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 33.3 | 36.9 | 40.9 | 45.9 | 52.5 | 59.8 | 66.7 | 66.5 | 59.0 | 49.7 | 39.1 | 32.7 | 48.6 |
| Highest Mean Temperature (F) | 39.5 | 43.4 | 46.1 | 51.8 | 58.0 | 64.4 | 71.9 | 70.8 | 64.9 | 57.2 | 46.2 | 39.7 | 71.9 |
| Year Highest Occurred | 1999 | 1991 | 1986 | 1990 | 1992 | 1986 | 1985 | 1986 | 1998 | 1988 | 1999 | 1980 | 1985 |
| Lowest Mean Temperature (F) | 16.6 | 25.9 | 35.8 | 39.6 | 47.6 | 55.4 | 58.2 | 61.7 | 53.0 | 45.2 | 28.7 | 24.2 | 16.6 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1977 | 1991 | 1993 | 1975 | 1985 | 1984 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 23.4 | 25.7 | 27.3 | 30.3 | 35.8 | 41.8 | 47.0 | 46.9 | 40.2 | 33.4 | 27.8 | 22.7 | 33.5 |
| Highest Mean Min. Temperature (F) | 30.1 | 31.0 | 33.0 | 34.6 | 40.2 | 46.3 | 50.4 | 51.8 | 44.2 | 39.4 | 32.6 | 30.0 | 51.8 |
| Year Highest Occurred | 1999 | 1983 | 1983 | 1992 | 1997 | 1982 | 1998 | 1977 | 1979 | 1979 | 1995 | 1973 | 1977 |
| Lowest Mean Min. Temperature (F) | 6.8 | 13.7 | 23.3 | 25.0 | 31.7 | 38.0 | 41.9 | 42.8 | 35.0 | 29.0 | 16.4 | 14.2 | 6.8 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1975 | 1976 | 1993 | 1975 | 1971 | 1971 | 1993 | 1990 | 1979 |
| Mean Precipitation (in.) | 0.97 | 0.68 | 0.76 | 0.65 | 0.95 | 0.62 | 0.55 | 0.54 | 0.37 | 0.56 | 0.98 | 0.92 | 8.55 |
| Highest Precipitation (in.) | 1.98 | 2.37 | 1.65 | 1.75 | 4.62 | 2.47 | 3.73 | 2.54 | 1.25 | 1.17 | 3.15 | 3.57 | 4.62 |
| Year Highest Occurred | 1980 | 1986 | 1989 | 1989 | 1998 | 1982 | 1987 | 1976 | 1982 | 1992 | 1984 | 1981 | 1998 |
| Lowest Precipitation (in.) | 0.13 | 0.00 | 0.16 | 0.02 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.12 | 0.00 | 0.00 |
| Year Lowest Occurred | 1984 | 1990 | 1985 | 1986 | 1974 | 1973 | 1988 | 1994 | 1999 | 1988 | 1976 | 1976 | 1990 |
| Heating Degree Days (F) | 985. | 787. | 748. | 573. | 390. | 186. | 70. | 67. | 211. | 476. | 779. | 1002. | 6274. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 29. | 123. | 113. | 31. | 0. | 0. | 0. | 297. |