| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 46.5 | 50.7 | 55.9 | 60.6 | 66.8 | 73.3 | 81.5 | 81.9 | 76.6 | 64.6 | 52.1 | 45.7 | 63.0 |
| Highest Mean Max. Temperature (F) | 50.9 | 56.7 | 62.0 | 66.6 | 74.7 | 78.8 | 87.3 | 86.2 | 84.2 | 72.1 | 56.9 | 50.4 | 87.3 |
| Year Highest Occurred | 1992 | 1991 | 1992 | 1989 | 1992 | 1992 | 1985 | 1986 | 1974 | 1987 | 1995 | 1974 | 1985 |
| Lowest Mean Max. Temperature (F) | 38.2 | 44.2 | 50.0 | 55.5 | 61.4 | 68.0 | 74.5 | 76.3 | 70.1 | 59.4 | 44.5 | 39.7 | 38.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1991 | 1991 | 1993 | 1975 | 1986 | 1984 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 39.8 | 42.8 | 46.3 | 49.8 | 54.8 | 60.2 | 66.2 | 66.4 | 61.7 | 52.6 | 44.7 | 39.5 | 52.1 |
| Highest Mean Temperature (F) | 45.0 | 48.4 | 50.1 | 55.2 | 59.7 | 64.7 | 69.9 | 69.3 | 66.6 | 56.8 | 50.3 | 44.9 | 69.9 |
| Year Highest Occurred | 1975 | 1991 | 1986 | 1989 | 1992 | 1992 | 1990 | 1986 | 1974 | 1988 | 1995 | 1974 | 1990 |
| Lowest Mean Temperature (F) | 31.2 | 35.5 | 41.3 | 44.7 | 50.9 | 55.8 | 62.1 | 62.2 | 57.4 | 47.9 | 37.2 | 32.6 | 31.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1977 | 1971 | 1993 | 1973 | 1972 | 1971 | 1985 | 1972 | 1979 |
| Mean Min. Temperature (F) | 33.0 | 34.9 | 36.7 | 38.9 | 42.7 | 47.0 | 50.8 | 50.8 | 46.7 | 40.5 | 37.2 | 33.3 | 41.0 |
| Highest Mean Min. Temperature (F) | 39.5 | 40.1 | 40.8 | 43.8 | 46.8 | 50.7 | 55.0 | 55.3 | 51.6 | 45.6 | 43.6 | 39.5 | 55.3 |
| Year Highest Occurred | 1975 | 1991 | 1993 | 1989 | 1993 | 1990 | 1995 | 1990 | 1995 | 1988 | 1995 | 1974 | 1990 |
| Lowest Mean Min. Temperature (F) | 24.3 | 26.8 | 31.3 | 33.7 | 39.1 | 42.3 | 47.3 | 45.8 | 42.4 | 35.8 | 28.6 | 24.7 | 24.3 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1982 | 1982 | 1976 | 1977 | 1980 | 1972 | 1971 | 1993 | 1972 | 1979 |
| Mean Precipitation (in.) | 7.65 | 6.35 | 5.80 | 3.66 | 2.66 | 1.53 | 0.64 | 0.99 | 1.54 | 3.35 | 8.44 | 8.29 | 50.90 |
| Highest Precipitation (in.) | 15.36 | 16.89 | 12.46 | 7.85 | 6.92 | 3.88 | 3.00 | 3.46 | 4.65 | 8.12 | 20.48 | 17.63 | 20.48 |
| Year Highest Occurred | 1995 | 1996 | 1974 | 1993 | 1993 | 1984 | 1987 | 1979 | 1986 | 1979 | 1973 | 1981 | 1973 |
| Lowest Precipitation (in.) | 0.31 | 1.59 | 1.68 | 0.49 | 0.14 | 0.07 | 0.00 | 0.00 | 0.00 | 0.11 | 1.33 | 1.24 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1978 | 1985 | 1992 | 1987 | 1998 | 2000 | 1999 | 1988 | 1976 | 1976 | 1998 |
| Heating Degree Days (F) | 769. | 615. | 564. | 443. | 308. | 152. | 45. | 31. | 115. | 370. | 594. | 780. | 4786. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 5. | 21. | 95. | 88. | 32. | 1. | 0. | 0. | 242. |