| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 19.5 | 26.7 | 38.5 | 55.1 | 69.0 | 76.6 | 80.9 | 78.1 | 68.4 | 56.1 | 37.7 | 24.1 | 52.6 |
| Highest Mean Max. Temperature (F) | 32.7 | 40.3 | 47.5 | 66.6 | 78.3 | 86.3 | 88.9 | 84.1 | 74.0 | 62.9 | 46.8 | 32.1 | 88.9 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1988 | 1988 | 1988 | 1976 | 1978 | 1973 | 1999 | 1979 | 1988 |
| Lowest Mean Max. Temperature (F) | 6.4 | 17.0 | 30.0 | 46.2 | 62.4 | 71.7 | 73.6 | 73.2 | 61.2 | 50.0 | 28.7 | 11.7 | 6.4 |
| Year Lowest Occurred | 1977 | 1989 | 1975 | 1975 | 1997 | 1993 | 1992 | 1985 | 1993 | 1976 | 1991 | 1983 | 1977 |
| Mean Temperature (F) | 9.8 | 17.1 | 29.2 | 44.0 | 57.1 | 65.2 | 70.0 | 67.4 | 57.7 | 45.7 | 29.5 | 15.4 | 42.3 |
| Highest Mean Temperature (F) | 23.5 | 30.5 | 37.9 | 51.7 | 64.1 | 72.2 | 76.3 | 73.7 | 62.8 | 51.3 | 36.8 | 24.1 | 76.3 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1988 | 1988 | 1987 | 1983 | 1978 | 1973 | 1987 | 1987 | 1987 |
| Lowest Mean Temperature (F) | -2.8 | 6.4 | 19.7 | 36.1 | 50.7 | 60.6 | 62.9 | 61.4 | 51.0 | 39.4 | 21.5 | 1.7 | -2.8 |
| Year Lowest Occurred | 1977 | 1989 | 1975 | 1975 | 1997 | 1985 | 1992 | 1977 | 1993 | 1976 | 1991 | 1983 | 1977 |
| Mean Min. Temperature (F) | 0.0 | 7.4 | 19.8 | 32.9 | 45.2 | 53.7 | 59.0 | 56.6 | 46.9 | 35.3 | 21.3 | 6.7 | 32.1 |
| Highest Mean Min. Temperature (F) | 14.2 | 23.9 | 29.2 | 37.5 | 50.5 | 58.1 | 65.4 | 63.4 | 53.1 | 41.1 | 27.9 | 17.7 | 65.4 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1976 | 1991 | 1988 | 1987 | 1983 | 1986 | 1984 | 1987 | 1997 | 1987 |
| Lowest Mean Min. Temperature (F) | -12.1 | -4.3 | 9.3 | 25.9 | 39.0 | 48.2 | 52.1 | 48.1 | 40.8 | 28.8 | 11.9 | -8.3 | -12.1 |
| Year Lowest Occurred | 1977 | 1989 | 1975 | 1975 | 1997 | 1982 | 1992 | 1977 | 1993 | 1976 | 1985 | 1983 | 1977 |
| Mean Precipitation (in.) | 0.96 | 0.63 | 1.40 | 2.10 | 3.18 | 4.39 | 4.30 | 4.08 | 2.95 | 2.37 | 1.89 | 0.85 | 29.10 |
| Highest Precipitation (in.) | 2.99 | 2.00 | 3.90 | 5.33 | 7.04 | 9.25 | 11.37 | 8.58 | 7.04 | 7.03 | 5.37 | 2.38 | 11.37 |
| Year Highest Occurred | 1975 | 2000 | 1977 | 1975 | 1991 | 1975 | 1972 | 1989 | 1985 | 1971 | 1991 | 1982 | 1972 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.26 | 0.38 | 1.24 | 0.68 | 1.00 | 0.83 | 0.35 | 0.23 | 0.25 | 0.00 | 0.00 |
| Year Lowest Occurred | 1990 | 1987 | 1981 | 1987 | 1997 | 1988 | 1976 | 1976 | 1976 | 1976 | 1980 | 1986 | 1990 |
| Heating Degree Days (F) | 1713. | 1343. | 1111. | 631. | 279. | 89. | 36. | 62. | 237. | 598. | 1066. | 1538. | 8703. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 34. | 94. | 191. | 136. | 18. | 0. | 0. | 0. | 474. |