| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 34.1 | 37.5 | 46.5 | 56.2 | 66.0 | 73.1 | 76.8 | 75.4 | 69.5 | 60.0 | 48.3 | 38.8 | 56.9 |
| Highest Mean Max. Temperature (F) | 45.5 | 46.2 | 53.2 | 63.5 | 73.1 | 77.4 | 81.6 | 80.8 | 73.7 | 66.0 | 54.9 | 47.0 | 81.6 |
| Year Highest Occurred | 1974 | 1990 | 1973 | 1994 | 1991 | 1994 | 1999 | 1988 | 1998 | 1984 | 1994 | 1984 | 1999 |
| Lowest Mean Max. Temperature (F) | 19.1 | 26.4 | 39.7 | 49.9 | 61.1 | 68.0 | 72.8 | 72.2 | 66.1 | 52.6 | 39.4 | 26.3 | 19.1 |
| Year Lowest Occurred | 1977 | 1978 | 1993 | 1983 | 1989 | 1972 | 2000 | 2000 | 1975 | 1988 | 1976 | 1989 | 1977 |
| Mean Temperature (F) | 24.5 | 27.2 | 35.4 | 44.2 | 54.2 | 61.3 | 65.4 | 63.5 | 57.5 | 47.6 | 37.6 | 29.3 | 45.6 |
| Highest Mean Temperature (F) | 36.0 | 35.4 | 42.8 | 49.5 | 60.2 | 64.3 | 69.0 | 67.8 | 61.2 | 54.9 | 45.8 | 37.8 | 69.0 |
| Year Highest Occurred | 1974 | 1990 | 1973 | 1994 | 1991 | 1994 | 1999 | 1988 | 1971 | 1984 | 1985 | 1984 | 1999 |
| Lowest Mean Temperature (F) | 10.3 | 14.7 | 29.6 | 38.9 | 49.4 | 57.6 | 62.3 | 59.1 | 54.4 | 41.8 | 29.7 | 16.9 | 10.3 |
| Year Lowest Occurred | 1977 | 1978 | 1999 | 1975 | 1994 | 1972 | 2000 | 1976 | 1984 | 1988 | 1976 | 1989 | 1977 |
| Mean Min. Temperature (F) | 14.9 | 16.8 | 24.3 | 32.2 | 42.3 | 49.4 | 53.9 | 51.5 | 45.4 | 35.1 | 26.8 | 19.7 | 34.4 |
| Highest Mean Min. Temperature (F) | 26.6 | 24.6 | 32.4 | 36.2 | 47.3 | 54.2 | 57.5 | 54.7 | 50.4 | 43.8 | 37.8 | 28.6 | 57.5 |
| Year Highest Occurred | 1974 | 1990 | 1973 | 1985 | 1991 | 1989 | 1989 | 1988 | 1971 | 1984 | 1985 | 1984 | 1989 |
| Lowest Mean Min. Temperature (F) | 1.4 | 2.9 | 18.6 | 27.7 | 37.1 | 46.0 | 51.7 | 45.8 | 40.5 | 29.0 | 20.0 | 7.5 | 1.4 |
| Year Lowest Occurred | 1977 | 1978 | 1996 | 1971 | 1994 | 1988 | 1974 | 1976 | 1984 | 1987 | 1976 | 1989 | 1977 |
| Mean Precipitation (in.) | 4.21 | 3.75 | 4.62 | 4.02 | 5.21 | 5.00 | 4.84 | 4.54 | 3.88 | 3.47 | 3.98 | 3.87 | 51.39 |
| Highest Precipitation (in.) | 7.55 | 8.22 | 9.32 | 6.90 | 9.20 | 10.10 | 8.92 | 9.78 | 7.56 | 9.68 | 15.16 | 7.06 | 15.16 |
| Year Highest Occurred | 1979 | 1994 | 1997 | 1981 | 1996 | 1998 | 1985 | 1975 | 1996 | 1976 | 1985 | 1978 | 1985 |
| Lowest Precipitation (in.) | 1.93 | 1.71 | 1.17 | 1.19 | 2.14 | 1.90 | 1.05 | 1.44 | 0.61 | 0.57 | 1.09 | 2.19 | 0.57 |
| Year Lowest Occurred | 1984 | 1978 | 1987 | 1976 | 1976 | 1992 | 1987 | 1976 | 1985 | 1994 | 1995 | 1988 | 1994 |
| Heating Degree Days (F) | 1255. | 1060. | 918. | 625. | 342. | 132. | 52. | 92. | 230. | 541. | 825. | 1109. | 7181. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 5. | 19. | 63. | 44. | 3. | 0. | 0. | 0. | 134. |