| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 45.1 | 49.6 | 53.7 | 59.2 | 65.2 | 70.0 | 75.4 | 76.3 | 71.0 | 60.4 | 50.2 | 44.3 | 60.0 |
| Highest Mean Max. Temperature (F) | 51.6 | 55.7 | 59.3 | 63.1 | 70.2 | 76.3 | 83.1 | 82.2 | 77.6 | 66.1 | 55.1 | 47.9 | 83.1 |
| Year Highest Occurred | 1986 | 1991 | 1992 | 1987 | 1993 | 1982 | 1985 | 1998 | 1998 | 1987 | 1997 | 1980 | 1985 |
| Lowest Mean Max. Temperature (F) | 39.4 | 41.4 | 47.5 | 53.8 | 60.0 | 65.3 | 68.6 | 69.6 | 65.8 | 57.0 | 40.4 | 38.0 | 38.0 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1996 | 1971 | 1983 | 1976 | 1978 | 1984 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 39.0 | 42.0 | 45.3 | 49.7 | 55.3 | 59.8 | 64.0 | 64.6 | 59.9 | 51.5 | 43.7 | 38.9 | 51.1 |
| Highest Mean Temperature (F) | 44.2 | 47.6 | 49.5 | 52.9 | 59.6 | 63.2 | 70.7 | 67.8 | 63.9 | 55.0 | 47.7 | 43.5 | 70.7 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1992 | 1993 | 1978 | 1998 | 1998 | 1998 | 1988 | 1995 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 31.9 | 32.3 | 40.6 | 45.3 | 51.8 | 56.5 | 59.6 | 60.5 | 55.9 | 48.4 | 33.7 | 32.8 | 31.9 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1972 | 1974 | 1976 | 1983 | 1973 | 1972 | 1984 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 32.9 | 34.4 | 36.8 | 40.1 | 45.3 | 49.6 | 52.6 | 52.9 | 48.7 | 42.6 | 37.2 | 33.4 | 42.2 |
| Highest Mean Min. Temperature (F) | 38.3 | 39.4 | 40.3 | 44.0 | 48.9 | 52.1 | 60.0 | 55.9 | 52.5 | 47.7 | 41.2 | 39.0 | 60.0 |
| Year Highest Occurred | 1994 | 1991 | 1986 | 1996 | 1993 | 1992 | 1998 | 1999 | 1997 | 1988 | 1999 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | 24.4 | 23.1 | 32.6 | 35.4 | 42.3 | 46.6 | 49.9 | 49.4 | 45.0 | 38.8 | 27.1 | 27.0 | 23.1 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1982 | 1999 | 1976 | 1977 | 1973 | 1971 | 1972 | 1985 | 1985 | 1989 |
| Mean Precipitation (in.) | 6.05 | 4.50 | 5.09 | 3.76 | 3.25 | 2.46 | 1.46 | 1.79 | 2.71 | 4.35 | 6.82 | 6.54 | 48.78 |
| Highest Precipitation (in.) | 10.31 | 7.76 | 8.83 | 7.60 | 6.02 | 4.48 | 3.60 | 5.19 | 5.95 | 9.78 | 13.33 | 12.47 | 13.33 |
| Year Highest Occurred | 1971 | 1999 | 1997 | 1993 | 1977 | 1997 | 1983 | 1977 | 1978 | 1975 | 1983 | 1996 | 1983 |
| Lowest Precipitation (in.) | 0.68 | 0.54 | 2.17 | 1.39 | 1.14 | 0.21 | 0.06 | 0.18 | 0.28 | 0.40 | 2.33 | 1.41 | 0.06 |
| Year Lowest Occurred | 1985 | 1993 | 1996 | 1989 | 1982 | 1987 | 1984 | 1998 | 1990 | 1987 | 1979 | 1985 | 1984 |
| Heating Degree Days (F) | 807. | 643. | 612. | 460. | 304. | 165. | 89. | 71. | 173. | 420. | 640. | 811. | 5195. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 9. | 58. | 58. | 17. | 0. | 0. | 0. | 143. |