| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.2 | 36.6 | 42.9 | 51.4 | 61.1 | 70.0 | 79.7 | 80.1 | 70.0 | 57.8 | 39.7 | 31.2 | 54.3 |
| Highest Mean Max. Temperature (F) | 36.8 | 43.6 | 54.5 | 62.8 | 70.4 | 77.4 | 86.3 | 86.5 | 77.8 | 68.1 | 49.3 | 37.4 | 86.5 |
| Year Highest Occurred | 1998 | 1991 | 1992 | 1987 | 1992 | 1986 | 1985 | 1971 | 1990 | 1988 | 1976 | 1989 | 1971 |
| Lowest Mean Max. Temperature (F) | 22.5 | 30.9 | 36.2 | 41.8 | 54.3 | 65.1 | 67.5 | 72.0 | 59.8 | 51.0 | 30.7 | 23.3 | 22.5 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1993 | 1993 | 1976 | 1986 | 1984 | 1985 | 1990 | 1979 |
| Mean Temperature (F) | 21.9 | 25.8 | 31.8 | 39.2 | 47.5 | 54.7 | 61.3 | 60.6 | 51.6 | 42.2 | 30.8 | 22.7 | 40.8 |
| Highest Mean Temperature (F) | 27.3 | 32.9 | 40.8 | 45.8 | 53.9 | 60.5 | 66.2 | 64.8 | 58.4 | 47.4 | 37.3 | 27.8 | 66.2 |
| Year Highest Occurred | 1990 | 1991 | 1992 | 1987 | 1992 | 1977 | 1998 | 1971 | 1998 | 1988 | 1999 | 1989 | 1998 |
| Lowest Mean Temperature (F) | 10.8 | 17.9 | 24.3 | 30.9 | 43.4 | 50.9 | 52.8 | 55.9 | 45.1 | 37.5 | 23.4 | 13.7 | 10.8 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1975 | 1975 | 1975 | 1993 | 1993 | 1986 | 1984 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 12.6 | 14.9 | 20.6 | 27.0 | 33.8 | 39.4 | 42.9 | 41.0 | 33.2 | 26.5 | 21.9 | 14.1 | 27.3 |
| Highest Mean Min. Temperature (F) | 20.5 | 23.1 | 27.1 | 32.4 | 37.5 | 44.2 | 47.9 | 47.9 | 41.6 | 30.7 | 28.5 | 21.4 | 47.9 |
| Year Highest Occurred | 1990 | 1992 | 1992 | 1992 | 1992 | 1977 | 1998 | 1983 | 1998 | 1979 | 1995 | 1977 | 1998 |
| Lowest Mean Min. Temperature (F) | -0.9 | 4.8 | 10.4 | 20.0 | 29.7 | 35.4 | 37.5 | 35.2 | 27.7 | 20.3 | 12.3 | 4.1 | -0.9 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1975 | 1975 | 1975 | 1986 | 1988 | 1988 | 1991 | 2000 | 1990 | 1979 |
| Mean Precipitation (in.) | 3.28 | 2.92 | 2.55 | 2.07 | 2.35 | 2.08 | 1.03 | 1.05 | 1.45 | 1.78 | 3.20 | 3.45 | 27.21 |
| Highest Precipitation (in.) | 6.24 | 6.08 | 5.07 | 4.77 | 7.25 | 4.73 | 2.43 | 3.30 | 5.24 | 5.51 | 9.25 | 9.81 | 9.81 |
| Year Highest Occurred | 1974 | 1999 | 1974 | 1993 | 1998 | 1971 | 1976 | 1975 | 1985 | 1975 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.41 | 0.90 | 0.53 | 0.28 | 0.76 | 0.59 | 0.06 | 0.01 | 0.01 | 0.00 | 0.36 | 0.31 | 0.00 |
| Year Lowest Occurred | 1985 | 1997 | 1992 | 1977 | 1974 | 1979 | 1971 | 2000 | 1987 | 1987 | 1976 | 1989 | 1987 |
| Heating Degree Days (F) | 1337. | 1099. | 1032. | 774. | 544. | 314. | 154. | 180. | 405. | 709. | 1026. | 1314. | 8888. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 4. | 38. | 41. | 4. | 0. | 0. | 0. | 87. |