| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 46.9 | 50.8 | 55.8 | 61.0 | 66.7 | 71.3 | 77.1 | 77.8 | 72.9 | 62.4 | 51.8 | 46.0 | 61.7 |
| Highest Mean Max. Temperature (F) | 51.0 | 55.4 | 60.3 | 67.5 | 73.0 | 76.7 | 85.1 | 84.3 | 78.6 | 68.4 | 57.5 | 50.2 | 85.1 |
| Year Highest Occurred | 1986 | 1977 | 1986 | 1989 | 1983 | 1982 | 1985 | 1986 | 1974 | 1987 | 1997 | 1980 | 1985 |
| Lowest Mean Max. Temperature (F) | 42.2 | 44.3 | 50.4 | 55.9 | 61.1 | 65.6 | 71.2 | 69.9 | 67.6 | 56.5 | 43.1 | 40.2 | 40.2 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1996 | 1971 | 1993 | 1976 | 1985 | 1984 | 1985 | 1990 | 1990 |
| Mean Temperature (F) | 40.0 | 42.4 | 45.6 | 49.3 | 54.7 | 59.3 | 63.9 | 64.4 | 59.6 | 51.5 | 44.4 | 39.8 | 51.2 |
| Highest Mean Temperature (F) | 44.6 | 46.4 | 50.3 | 53.6 | 59.8 | 63.5 | 68.1 | 68.5 | 63.0 | 54.6 | 47.9 | 44.8 | 68.5 |
| Year Highest Occurred | 1983 | 1992 | 1986 | 1989 | 1983 | 1992 | 1985 | 1986 | 1995 | 1988 | 1999 | 1980 | 1986 |
| Lowest Mean Temperature (F) | 33.5 | 34.4 | 41.4 | 44.6 | 50.9 | 54.8 | 60.6 | 59.5 | 56.0 | 48.1 | 34.9 | 34.6 | 33.5 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1972 | 1977 | 1971 | 1977 | 1973 | 1972 | 1984 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 33.1 | 33.9 | 35.3 | 37.6 | 42.7 | 47.3 | 50.6 | 50.9 | 46.3 | 40.6 | 36.9 | 33.5 | 40.7 |
| Highest Mean Min. Temperature (F) | 38.6 | 39.4 | 40.2 | 42.2 | 47.3 | 50.4 | 54.2 | 53.9 | 50.9 | 46.0 | 41.0 | 39.4 | 54.2 |
| Year Highest Occurred | 1994 | 1992 | 1986 | 1994 | 1993 | 1992 | 1998 | 1999 | 1995 | 1988 | 1998 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | 24.7 | 24.4 | 31.5 | 32.7 | 39.5 | 43.7 | 47.0 | 46.7 | 42.0 | 35.4 | 26.6 | 27.9 | 24.4 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1977 | 1976 | 1977 | 1973 | 1972 | 1972 | 1985 | 1978 | 1989 |
| Mean Precipitation (in.) | 8.38 | 7.11 | 5.96 | 3.98 | 2.75 | 2.09 | 0.86 | 1.18 | 2.42 | 4.60 | 8.99 | 9.03 | 57.35 |
| Highest Precipitation (in.) | 16.81 | 12.87 | 13.07 | 9.29 | 6.20 | 4.96 | 2.96 | 4.82 | 7.37 | 10.61 | 16.76 | 16.74 | 16.81 |
| Year Highest Occurred | 1976 | 1999 | 1997 | 1996 | 1996 | 1984 | 1983 | 1977 | 1978 | 1975 | 1973 | 1977 | 1976 |
| Lowest Precipitation (in.) | 0.36 | 0.39 | 1.02 | 1.16 | 0.14 | 0.13 | 0.00 | 0.00 | 0.00 | 0.47 | 2.06 | 1.32 | 0.00 |
| Year Lowest Occurred | 1985 | 1993 | 1992 | 1977 | 1982 | 1987 | 1984 | 1986 | 1993 | 1987 | 1976 | 1985 | 1984 |
| Heating Degree Days (F) | 775. | 635. | 602. | 473. | 322. | 183. | 81. | 78. | 174. | 419. | 620. | 783. | 5145. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 3. | 12. | 45. | 58. | 11. | 0. | 0. | 0. | 129. |