| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 49.5 | 53.0 | 59.2 | 66.6 | 75.1 | 84.6 | 87.6 | 85.2 | 79.9 | 70.6 | 57.0 | 49.5 | 68.2 |
| Highest Mean Max. Temperature (F) | 58.2 | 61.6 | 67.2 | 75.5 | 82.9 | 91.0 | 92.3 | 88.6 | 84.7 | 75.8 | 66.5 | 58.9 | 92.3 |
| Year Highest Occurred | 1986 | 1999 | 1989 | 1981 | 1996 | 1990 | 1980 | 2000 | 1983 | 1975 | 1999 | 1980 | 1980 |
| Lowest Mean Max. Temperature (F) | 39.0 | 45.5 | 52.3 | 56.6 | 69.3 | 79.1 | 84.2 | 82.1 | 76.3 | 61.2 | 47.3 | 37.6 | 37.6 |
| Year Lowest Occurred | 1979 | 1989 | 1973 | 1973 | 1995 | 1983 | 1990 | 1981 | 1974 | 1984 | 1992 | 1983 | 1983 |
| Mean Temperature (F) | 34.3 | 37.7 | 43.9 | 50.7 | 59.5 | 68.7 | 72.5 | 70.5 | 64.3 | 54.1 | 41.9 | 34.7 | 52.7 |
| Highest Mean Temperature (F) | 41.3 | 44.9 | 49.5 | 57.8 | 66.4 | 74.0 | 75.1 | 74.1 | 67.8 | 56.4 | 47.9 | 43.2 | 75.1 |
| Year Highest Occurred | 1986 | 1999 | 1989 | 1981 | 1996 | 1990 | 1980 | 2000 | 2000 | 1979 | 1981 | 1980 | 1980 |
| Lowest Mean Temperature (F) | 24.5 | 30.5 | 38.0 | 43.0 | 54.6 | 63.6 | 70.3 | 67.5 | 59.9 | 48.8 | 33.9 | 24.7 | 24.5 |
| Year Lowest Occurred | 1979 | 1989 | 1984 | 1973 | 1983 | 1983 | 1992 | 1974 | 1974 | 1984 | 1992 | 1983 | 1979 |
| Mean Min. Temperature (F) | 19.1 | 22.4 | 28.5 | 34.7 | 43.8 | 52.7 | 57.3 | 55.8 | 48.6 | 37.5 | 26.7 | 19.9 | 37.3 |
| Highest Mean Min. Temperature (F) | 25.0 | 28.2 | 33.8 | 40.1 | 49.9 | 57.0 | 59.6 | 59.6 | 52.8 | 41.4 | 33.4 | 27.5 | 59.6 |
| Year Highest Occurred | 1995 | 1999 | 1986 | 1981 | 1996 | 1990 | 1989 | 2000 | 1997 | 1972 | 1981 | 1980 | 1989 |
| Lowest Mean Min. Temperature (F) | 10.1 | 15.5 | 23.0 | 29.3 | 38.9 | 48.2 | 54.6 | 51.8 | 42.8 | 33.2 | 20.5 | 11.8 | 10.1 |
| Year Lowest Occurred | 1979 | 1989 | 1984 | 1973 | 1983 | 1983 | 1992 | 1974 | 1993 | 1999 | 1992 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.46 | 0.49 | 1.16 | 1.22 | 1.95 | 1.62 | 2.69 | 2.75 | 1.29 | 1.01 | 0.99 | 0.48 | 16.11 |
| Highest Precipitation (in.) | 1.48 | 2.66 | 3.04 | 3.74 | 5.27 | 4.06 | 8.07 | 8.54 | 4.44 | 2.95 | 2.42 | 1.48 | 8.54 |
| Year Highest Occurred | 1990 | 1987 | 1994 | 1980 | 1979 | 1986 | 1998 | 1981 | 1982 | 1998 | 1992 | 1973 | 1981 |
| Lowest Precipitation (in.) | 0.01 | 0.00 | 0.13 | 0.20 | 0.00 | 0.19 | 0.26 | 0.63 | 0.06 | 0.00 | 0.05 | 0.13 | 0.00 |
| Year Lowest Occurred | 1977 | 2000 | 1995 | 1972 | 1998 | 1971 | 1987 | 1973 | 1992 | 1995 | 1989 | 1994 | 2000 |
| Heating Degree Days (F) | 952. | 764. | 655. | 436. | 207. | 32. | 0. | 7. | 85. | 340. | 694. | 939. | 5111. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 5. | 35. | 141. | 231. | 177. | 63. | 1. | 0. | 0. | 653. |