| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 39.4 | 39.8 | 41.0 | 45.0 | 51.5 | 57.5 | 64.9 | 65.9 | 61.2 | 53.2 | 42.4 | 39.5 | 50.1 |
| Highest Mean Max. Temperature (F) | 45.6 | 48.0 | 49.6 | 52.9 | 60.6 | 63.9 | 72.8 | 73.9 | 67.6 | 62.4 | 47.9 | 47.0 | 73.9 |
| Year Highest Occurred | 1985 | 1991 | 1992 | 1987 | 1992 | 1987 | 1985 | 1986 | 1974 | 1987 | 1995 | 1989 | 1986 |
| Lowest Mean Max. Temperature (F) | 33.2 | 29.2 | 35.5 | 38.4 | 46.0 | 51.8 | 55.2 | 59.6 | 55.2 | 46.4 | 33.8 | 32.4 | 29.2 |
| Year Lowest Occurred | 1993 | 1989 | 1999 | 1975 | 1977 | 1980 | 1993 | 1975 | 1986 | 1984 | 1985 | 1990 | 1989 |
| Mean Temperature (F) | 34.5 | 35.0 | 36.0 | 38.7 | 44.4 | 50.1 | 56.8 | 57.7 | 53.9 | 46.8 | 37.7 | 34.8 | 43.9 |
| Highest Mean Temperature (F) | 40.3 | 42.6 | 43.9 | 44.2 | 51.7 | 54.8 | 63.2 | 64.7 | 58.3 | 54.5 | 43.0 | 41.3 | 64.7 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1992 | 1992 | 1985 | 1986 | 1998 | 1987 | 1995 | 1989 | 1986 |
| Lowest Mean Temperature (F) | 28.9 | 25.3 | 31.3 | 33.1 | 39.9 | 45.3 | 49.1 | 53.2 | 48.7 | 40.8 | 29.1 | 27.2 | 25.3 |
| Year Lowest Occurred | 1993 | 1989 | 1971 | 1975 | 1977 | 1980 | 1993 | 1975 | 1985 | 1984 | 1985 | 1990 | 1989 |
| Mean Min. Temperature (F) | 29.5 | 30.1 | 31.0 | 32.4 | 37.3 | 42.7 | 48.6 | 49.5 | 46.6 | 40.3 | 32.9 | 30.0 | 37.6 |
| Highest Mean Min. Temperature (F) | 35.6 | 37.5 | 38.2 | 37.5 | 43.2 | 46.9 | 53.6 | 55.4 | 51.1 | 46.8 | 39.3 | 35.5 | 55.4 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1990 | 1997 | 1992 | 1985 | 1986 | 1994 | 1988 | 1997 | 1989 | 1986 |
| Lowest Mean Min. Temperature (F) | 22.5 | 21.3 | 27.0 | 27.7 | 33.8 | 38.7 | 43.0 | 45.9 | 41.0 | 35.2 | 24.3 | 22.0 | 21.3 |
| Year Lowest Occurred | 1980 | 1989 | 1971 | 1975 | 1977 | 1980 | 1993 | 1973 | 1983 | 1984 | 1985 | 1990 | 1989 |
| Mean Precipitation (in.) | 19.49 | 15.74 | 13.01 | 8.19 | 5.50 | 3.70 | 1.22 | 1.51 | 4.35 | 9.19 | 18.36 | 20.63 | 120.89 |
| Highest Precipitation (in.) | 35.85 | 39.51 | 25.48 | 24.97 | 10.14 | 10.97 | 4.32 | 5.82 | 11.16 | 25.64 | 36.99 | 49.57 | 49.57 |
| Year Highest Occurred | 1998 | 1999 | 1983 | 1996 | 1978 | 1981 | 1983 | 1978 | 1997 | 1997 | 1995 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.93 | 2.28 | 2.43 | 2.61 | 0.18 | 0.44 | 0.00 | 0.01 | 0.02 | 0.53 | 3.33 | 3.81 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1992 | 1977 | 1992 | 1987 | 1994 | 1998 | 1993 | 1987 | 1993 | 1976 | 1994 |
| Heating Degree Days (F) | 948. | 842. | 884. | 789. | 639. | 448. | 275. | 239. | 342. | 566. | 820. | 939. | 7731. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 1. | 18. | 13. | 9. | 0. | 0. | 0. | 41. |