| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 32.7 | 38.5 | 46.8 | 57.0 | 66.6 | 76.5 | 84.9 | 83.9 | 73.3 | 60.2 | 41.3 | 32.2 | 57.8 |
| Highest Mean Max. Temperature (F) | 43.1 | 48.1 | 55.9 | 68.9 | 73.2 | 87.6 | 91.3 | 89.8 | 81.5 | 66.9 | 54.9 | 40.2 | 91.3 |
| Year Highest Occurred | 1981 | 1991 | 1986 | 1987 | 1992 | 1988 | 1989 | 1991 | 1979 | 1988 | 1999 | 1980 | 1989 |
| Lowest Mean Max. Temperature (F) | 19.6 | 23.0 | 40.0 | 43.8 | 59.4 | 67.7 | 73.7 | 78.4 | 64.8 | 52.9 | 30.7 | 21.6 | 19.6 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1975 | 1975 | 1998 | 1993 | 1980 | 1986 | 1984 | 1985 | 1972 | 1979 |
| Mean Temperature (F) | 23.5 | 28.4 | 35.7 | 44.2 | 53.0 | 61.5 | 68.7 | 67.7 | 57.9 | 47.1 | 32.1 | 23.8 | 45.3 |
| Highest Mean Temperature (F) | 32.8 | 37.0 | 43.5 | 51.8 | 57.8 | 70.4 | 73.9 | 72.2 | 64.0 | 52.0 | 43.7 | 30.2 | 73.9 |
| Year Highest Occurred | 1981 | 1992 | 1986 | 1987 | 1994 | 1988 | 1989 | 1971 | 1990 | 1988 | 1999 | 1980 | 1989 |
| Lowest Mean Temperature (F) | 9.1 | 14.2 | 29.5 | 33.6 | 47.6 | 55.2 | 60.1 | 63.2 | 51.6 | 41.1 | 20.9 | 14.0 | 9.1 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1975 | 1998 | 1993 | 1993 | 1985 | 1984 | 1985 | 1990 | 1979 |
| Mean Min. Temperature (F) | 14.3 | 18.3 | 24.5 | 31.4 | 39.3 | 46.5 | 52.5 | 51.5 | 42.4 | 33.9 | 22.8 | 15.3 | 32.7 |
| Highest Mean Min. Temperature (F) | 22.4 | 26.2 | 31.1 | 34.9 | 43.6 | 53.2 | 56.4 | 56.5 | 48.7 | 38.5 | 32.5 | 21.0 | 56.5 |
| Year Highest Occurred | 1981 | 1992 | 1986 | 1981 | 1981 | 1988 | 1989 | 1983 | 1998 | 1983 | 1999 | 1979 | 1983 |
| Lowest Mean Min. Temperature (F) | -1.5 | 5.4 | 17.8 | 23.5 | 35.4 | 42.6 | 46.5 | 47.9 | 37.6 | 29.3 | 11.0 | 4.6 | -1.5 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1979 | 1998 | 1993 | 1975 | 1975 | 1976 | 1985 | 1978 | 1979 |
| Mean Precipitation (in.) | 0.37 | 0.33 | 0.63 | 0.61 | 1.70 | 1.35 | 1.21 | 0.88 | 0.94 | 0.71 | 0.67 | 0.46 | 9.86 |
| Highest Precipitation (in.) | 1.83 | 2.00 | 2.33 | 1.46 | 3.69 | 3.99 | 2.76 | 2.79 | 2.85 | 1.77 | 1.79 | 2.18 | 3.99 |
| Year Highest Occurred | 1999 | 1994 | 1995 | 1975 | 1991 | 1998 | 1977 | 1972 | 1972 | 1983 | 1992 | 1981 | 1998 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.04 | 0.41 | 0.08 | 0.29 | 0.00 | 0.01 | 0.00 | 0.00 | 0.01 | 0.00 |
| Year Lowest Occurred | 1994 | 1997 | 1978 | 1987 | 1995 | 1991 | 1980 | 1988 | 1979 | 1987 | 1990 | 1986 | 1994 |
| Heating Degree Days (F) | 1287. | 1025. | 912. | 623. | 379. | 160. | 48. | 55. | 247. | 556. | 989. | 1279. | 7560. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 4. | 54. | 162. | 138. | 33. | 0. | 0. | 0. | 391. |