| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.2 | 38.0 | 53.5 | 64.4 | 74.3 | 84.8 | 90.9 | 88.9 | 79.4 | 66.0 | 47.4 | 33.8 | 62.6 |
| Highest Mean Max. Temperature (F) | 45.5 | 52.1 | 62.2 | 73.1 | 80.3 | 89.7 | 95.2 | 92.9 | 86.3 | 74.3 | 57.5 | 47.2 | 95.2 |
| Year Highest Occurred | 1981 | 1995 | 1972 | 1992 | 2000 | 1994 | 2000 | 1994 | 1979 | 1988 | 1999 | 1980 | 2000 |
| Lowest Mean Max. Temperature (F) | 13.5 | 22.1 | 43.1 | 55.3 | 66.9 | 78.4 | 86.4 | 85.8 | 73.4 | 59.3 | 36.9 | 15.9 | 13.5 |
| Year Lowest Occurred | 1979 | 1984 | 1979 | 1983 | 1995 | 1975 | 1992 | 1993 | 1986 | 1984 | 1971 | 1978 | 1979 |
| Mean Temperature (F) | 17.3 | 24.2 | 38.4 | 47.8 | 57.2 | 65.9 | 71.9 | 69.9 | 60.7 | 48.5 | 33.5 | 21.2 | 46.4 |
| Highest Mean Temperature (F) | 29.4 | 36.1 | 45.4 | 53.4 | 61.0 | 70.0 | 75.8 | 74.1 | 66.3 | 53.3 | 37.9 | 31.5 | 75.8 |
| Year Highest Occurred | 2000 | 1995 | 1986 | 1992 | 2000 | 1988 | 1998 | 2000 | 1998 | 1988 | 1998 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 1.1 | 8.0 | 31.0 | 41.4 | 52.3 | 60.3 | 66.7 | 66.7 | 55.8 | 44.4 | 26.0 | 5.3 | 1.1 |
| Year Lowest Occurred | 1973 | 1985 | 1979 | 1983 | 1975 | 1975 | 1993 | 1975 | 1971 | 1971 | 1971 | 1978 | 1973 |
| Mean Min. Temperature (F) | 4.3 | 10.4 | 23.2 | 31.1 | 40.0 | 46.9 | 52.9 | 50.8 | 41.9 | 30.9 | 19.6 | 8.5 | 30.0 |
| Highest Mean Min. Temperature (F) | 18.1 | 25.0 | 29.5 | 35.7 | 43.2 | 52.2 | 57.7 | 56.9 | 49.5 | 35.0 | 24.9 | 17.0 | 57.7 |
| Year Highest Occurred | 1995 | 1998 | 1986 | 1990 | 1987 | 1972 | 1998 | 1983 | 1997 | 1998 | 1998 | 1994 | 1998 |
| Lowest Mean Min. Temperature (F) | -11.4 | -7.4 | 17.5 | 26.2 | 36.8 | 41.5 | 46.5 | 45.4 | 35.9 | 24.7 | 14.0 | -5.3 | -11.4 |
| Year Lowest Occurred | 1973 | 1985 | 1971 | 1982 | 1978 | 1976 | 1993 | 1975 | 1971 | 1976 | 1976 | 1978 | 1973 |
| Mean Precipitation (in.) | 0.54 | 0.53 | 0.68 | 0.82 | 0.92 | 0.53 | 0.68 | 0.62 | 0.93 | 1.14 | 0.59 | 0.46 | 8.44 |
| Highest Precipitation (in.) | 1.51 | 1.24 | 2.44 | 2.39 | 2.71 | 2.21 | 2.38 | 1.95 | 3.05 | 3.78 | 1.46 | 1.68 | 3.78 |
| Year Highest Occurred | 1978 | 1998 | 1979 | 1999 | 1995 | 1998 | 1985 | 1997 | 1997 | 1981 | 1983 | 1984 | 1981 |
| Lowest Precipitation (in.) | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.07 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1994 | 1988 | 1972 | 1992 | 1974 | 1980 | 1971 | 1971 | 1979 | 1995 | 1976 | 1993 | 1994 |
| Heating Degree Days (F) | 1481. | 1142. | 826. | 517. | 252. | 68. | 6. | 18. | 164. | 514. | 945. | 1359. | 7292. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 9. | 92. | 221. | 169. | 33. | 0. | 0. | 0. | 524. |