| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 46.4 | 50.5 | 55.4 | 60.3 | 66.7 | 72.6 | 80.2 | 81.5 | 76.3 | 65.0 | 52.3 | 46.1 | 62.8 |
| Highest Mean Max. Temperature (F) | 50.1 | 57.7 | 63.8 | 65.9 | 75.1 | 78.1 | 86.4 | 88.1 | 84.3 | 74.2 | 57.8 | 49.7 | 88.1 |
| Year Highest Occurred | 1986 | 1992 | 1992 | 1989 | 1992 | 1992 | 1985 | 1986 | 1974 | 1987 | 1995 | 1979 | 1986 |
| Lowest Mean Max. Temperature (F) | 38.3 | 42.2 | 49.3 | 54.1 | 61.6 | 66.3 | 72.7 | 75.8 | 68.3 | 58.8 | 44.7 | 40.0 | 38.3 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1991 | 1971 | 1993 | 1976 | 1978 | 1984 | 1985 | 1990 | 1979 |
| Mean Temperature (F) | 39.2 | 42.2 | 45.5 | 49.1 | 54.4 | 59.6 | 65.0 | 65.7 | 61.5 | 52.9 | 44.2 | 39.3 | 51.6 |
| Highest Mean Temperature (F) | 43.0 | 48.6 | 51.6 | 53.6 | 59.4 | 63.2 | 69.6 | 69.1 | 66.0 | 58.0 | 50.9 | 42.9 | 69.6 |
| Year Highest Occurred | 1998 | 1992 | 1992 | 1989 | 1992 | 1986 | 1996 | 1986 | 1974 | 1987 | 1995 | 1979 | 1996 |
| Lowest Mean Temperature (F) | 30.5 | 34.2 | 40.5 | 44.2 | 50.4 | 54.9 | 60.8 | 61.5 | 57.3 | 49.2 | 36.7 | 32.6 | 30.5 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1977 | 1971 | 1993 | 1973 | 1985 | 1984 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 32.0 | 33.8 | 35.6 | 37.9 | 42.0 | 46.5 | 49.7 | 49.8 | 46.7 | 40.8 | 36.1 | 32.5 | 40.3 |
| Highest Mean Min. Temperature (F) | 37.2 | 39.4 | 40.2 | 43.0 | 46.6 | 49.7 | 54.7 | 56.1 | 52.8 | 45.2 | 43.9 | 36.7 | 56.1 |
| Year Highest Occurred | 1998 | 1992 | 1993 | 1992 | 1993 | 2000 | 1998 | 1999 | 1995 | 1988 | 1995 | 1973 | 1999 |
| Lowest Mean Min. Temperature (F) | 22.7 | 26.1 | 31.7 | 33.7 | 39.1 | 42.6 | 46.4 | 44.1 | 43.2 | 37.1 | 28.3 | 25.2 | 22.7 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1982 | 1977 | 1976 | 1977 | 1973 | 1972 | 1971 | 1993 | 1990 | 1979 |
| Mean Precipitation (in.) | 10.88 | 9.58 | 7.69 | 4.48 | 2.53 | 1.43 | 0.51 | 0.74 | 1.73 | 4.25 | 10.93 | 12.51 | 67.26 |
| Highest Precipitation (in.) | 18.37 | 20.57 | 16.80 | 11.30 | 5.26 | 4.21 | 2.23 | 2.40 | 5.75 | 11.74 | 27.14 | 28.55 | 28.55 |
| Year Highest Occurred | 1995 | 1996 | 1983 | 1996 | 1984 | 1981 | 1974 | 1975 | 1997 | 1997 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.34 | 1.81 | 1.52 | 0.55 | 0.00 | 0.15 | 0.00 | 0.00 | 0.00 | 0.25 | 1.72 | 2.14 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1992 | 1977 | 1992 | 1987 | 1995 | 1998 | 1999 | 1987 | 1993 | 1976 | 1992 |
| Heating Degree Days (F) | 800. | 640. | 605. | 477. | 333. | 180. | 77. | 62. | 148. | 376. | 624. | 798. | 5120. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 3. | 16. | 77. | 81. | 43. | 1. | 0. | 0. | 221. |