| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 38.3 | 43.8 | 51.7 | 60.2 | 69.9 | 81.8 | 88.0 | 86.5 | 77.3 | 64.9 | 48.8 | 40.1 | 62.6 |
| Highest Mean Max. Temperature (F) | 47.6 | 53.4 | 59.5 | 67.5 | 76.5 | 88.1 | 92.3 | 91.8 | 83.8 | 70.1 | 61.8 | 50.8 | 92.3 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1981 | 1974 | 1994 | 1974 | 1995 | 1998 | 1975 | 1999 | 1980 | 1974 |
| Lowest Mean Max. Temperature (F) | 26.2 | 31.1 | 45.5 | 51.0 | 58.4 | 75.0 | 82.1 | 80.5 | 71.9 | 57.8 | 35.2 | 23.4 | 23.4 |
| Year Lowest Occurred | 1979 | 1989 | 1984 | 1984 | 1995 | 1982 | 1992 | 1992 | 1985 | 1984 | 1972 | 1983 | 1983 |
| Mean Temperature (F) | 27.1 | 32.2 | 39.0 | 47.1 | 57.0 | 67.8 | 73.7 | 72.3 | 63.1 | 51.0 | 36.7 | 28.7 | 49.6 |
| Highest Mean Temperature (F) | 36.4 | 39.5 | 46.4 | 53.7 | 62.2 | 72.9 | 76.6 | 77.5 | 69.3 | 53.3 | 45.7 | 37.4 | 77.5 |
| Year Highest Occurred | 1986 | 1999 | 1986 | 1981 | 1994 | 1994 | 1980 | 1983 | 1998 | 1975 | 1999 | 1980 | 1983 |
| Lowest Mean Temperature (F) | 15.6 | 20.7 | 34.4 | 40.5 | 49.3 | 62.6 | 69.9 | 68.2 | 59.2 | 46.2 | 27.4 | 14.6 | 14.6 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1983 | 1995 | 1982 | 1992 | 1992 | 1985 | 1984 | 1972 | 1983 | 1983 |
| Mean Min. Temperature (F) | 15.8 | 20.6 | 26.2 | 34.0 | 44.1 | 53.7 | 59.3 | 58.0 | 48.9 | 37.0 | 24.6 | 17.3 | 36.6 |
| Highest Mean Min. Temperature (F) | 25.2 | 27.5 | 33.3 | 39.9 | 48.0 | 57.7 | 62.0 | 63.3 | 54.8 | 39.7 | 31.5 | 24.1 | 63.3 |
| Year Highest Occurred | 1986 | 1992 | 1986 | 1981 | 1994 | 1994 | 1980 | 1983 | 1998 | 1998 | 1998 | 1980 | 1983 |
| Lowest Mean Min. Temperature (F) | 5.0 | 10.2 | 20.5 | 28.8 | 40.2 | 49.9 | 56.0 | 54.2 | 44.3 | 32.1 | 17.9 | 5.9 | 5.0 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1997 | 1995 | 1998 | 1972 | 1974 | 1974 | 1976 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.33 | 0.36 | 1.04 | 1.58 | 3.15 | 2.32 | 2.93 | 2.00 | 0.92 | 0.90 | 0.69 | 0.40 | 16.62 |
| Highest Precipitation (in.) | 1.68 | 1.72 | 3.13 | 3.94 | 7.36 | 6.61 | 5.77 | 5.25 | 2.81 | 3.29 | 1.82 | 2.78 | 7.36 |
| Year Highest Occurred | 1988 | 1987 | 1981 | 1983 | 1987 | 1989 | 1980 | 1978 | 1973 | 1993 | 1983 | 1982 | 1987 |
| Lowest Precipitation (in.) | 0.01 | 0.00 | 0.01 | 0.32 | 0.32 | 0.50 | 0.47 | 0.11 | 0.00 | 0.09 | 0.02 | 0.00 | 0.00 |
| Year Lowest Occurred | 1983 | 1972 | 1994 | 1992 | 1974 | 1994 | 1986 | 1973 | 1978 | 1975 | 1989 | 1980 | 1972 |
| Heating Degree Days (F) | 1177. | 919. | 808. | 538. | 267. | 54. | 2. | 13. | 129. | 436. | 850. | 1126. | 6319. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 19. | 137. | 270. | 237. | 72. | 0. | 0. | 0. | 736. |