| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 45.6 | 50.3 | 55.7 | 60.5 | 66.7 | 72.7 | 79.3 | 79.7 | 74.6 | 63.3 | 51.8 | 45.4 | 62.1 |
| Highest Mean Max. Temperature (F) | 50.7 | 57.1 | 62.8 | 65.7 | 75.4 | 78.4 | 86.5 | 85.1 | 80.8 | 70.8 | 56.2 | 49.6 | 86.5 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1989 | 1992 | 1992 | 1985 | 1986 | 1974 | 1987 | 1995 | 1980 | 1985 |
| Lowest Mean Max. Temperature (F) | 34.9 | 42.9 | 51.1 | 55.5 | 61.1 | 67.3 | 71.8 | 73.2 | 67.9 | 58.7 | 42.0 | 38.6 | 34.9 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1991 | 1991 | 1993 | 1976 | 1978 | 1984 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 39.9 | 43.1 | 47.2 | 51.2 | 57.1 | 62.7 | 68.1 | 68.5 | 63.6 | 54.3 | 45.8 | 40.2 | 53.5 |
| Highest Mean Temperature (F) | 44.3 | 48.5 | 51.8 | 55.5 | 62.5 | 66.8 | 73.1 | 71.8 | 67.0 | 57.8 | 51.2 | 44.1 | 73.1 |
| Year Highest Occurred | 1992 | 1991 | 1992 | 1989 | 1992 | 1992 | 1985 | 1986 | 1994 | 1988 | 1995 | 1973 | 1985 |
| Lowest Mean Temperature (F) | 30.1 | 35.7 | 42.6 | 46.1 | 52.6 | 59.1 | 63.8 | 64.4 | 59.9 | 51.6 | 36.6 | 32.4 | 30.1 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1971 | 1993 | 1975 | 1977 | 1971 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 34.2 | 35.9 | 38.6 | 41.9 | 47.5 | 52.6 | 56.9 | 57.3 | 52.5 | 45.2 | 39.8 | 35.0 | 44.8 |
| Highest Mean Min. Temperature (F) | 38.8 | 40.4 | 42.4 | 46.5 | 51.7 | 55.2 | 61.2 | 60.4 | 56.6 | 49.8 | 46.2 | 39.2 | 61.2 |
| Year Highest Occurred | 1994 | 1998 | 1983 | 1992 | 1997 | 1992 | 1998 | 1997 | 1995 | 1988 | 1995 | 1973 | 1998 |
| Lowest Mean Min. Temperature (F) | 25.2 | 28.5 | 34.1 | 36.7 | 43.5 | 48.7 | 53.8 | 53.5 | 48.9 | 41.4 | 30.8 | 26.3 | 25.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1978 | 1976 | 1977 | 1973 | 1972 | 1972 | 1978 | 1985 | 1979 |
| Mean Precipitation (in.) | 5.07 | 4.18 | 3.71 | 2.64 | 2.38 | 1.59 | 0.72 | 0.93 | 1.65 | 2.88 | 5.61 | 5.71 | 37.07 |
| Highest Precipitation (in.) | 8.51 | 10.03 | 7.14 | 5.26 | 5.55 | 4.06 | 2.68 | 3.29 | 4.30 | 8.41 | 11.55 | 13.35 | 13.35 |
| Year Highest Occurred | 1980 | 1996 | 1997 | 1993 | 1998 | 1984 | 1983 | 1976 | 1986 | 1994 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.06 | 0.72 | 1.49 | 1.04 | 0.10 | 0.14 | 0.00 | 0.00 | 0.00 | 0.19 | 0.77 | 1.38 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1978 | 1998 | 1992 | 1987 | 1984 | 1998 | 1993 | 1988 | 1976 | 1976 | 1984 |
| Heating Degree Days (F) | 765. | 605. | 536. | 400. | 243. | 96. | 21. | 21. | 78. | 319. | 560. | 756. | 4400. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 14. | 43. | 133. | 145. | 52. | 2. | 0. | 0. | 390. |