| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 22.0 | 28.6 | 40.4 | 55.5 | 68.4 | 77.1 | 81.0 | 78.7 | 69.9 | 58.4 | 40.5 | 26.4 | 53.9 |
| Highest Mean Max. Temperature (F) | 33.8 | 38.0 | 50.3 | 64.4 | 78.7 | 85.3 | 87.8 | 85.3 | 75.8 | 66.3 | 52.4 | 34.4 | 87.8 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1977 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1998 | 1988 |
| Lowest Mean Max. Temperature (F) | 10.7 | 20.9 | 33.1 | 47.3 | 61.5 | 70.2 | 74.2 | 74.6 | 62.6 | 52.4 | 32.2 | 15.3 | 10.7 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1975 | 1983 | 1998 | 1992 | 1997 | 1993 | 1988 | 1995 | 1983 | 1977 |
| Mean Temperature (F) | 11.1 | 17.4 | 29.3 | 43.3 | 55.3 | 64.4 | 68.6 | 66.6 | 57.3 | 46.2 | 30.6 | 16.7 | 42.2 |
| Highest Mean Temperature (F) | 22.7 | 28.4 | 37.8 | 50.0 | 63.7 | 69.3 | 72.7 | 72.4 | 62.3 | 53.4 | 39.3 | 24.1 | 72.7 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1977 | 1995 | 1988 | 1995 | 1978 | 1971 | 1999 | 1982 | 1988 |
| Lowest Mean Temperature (F) | -0.8 | 8.2 | 22.0 | 36.6 | 49.4 | 59.4 | 62.8 | 62.0 | 50.5 | 40.0 | 23.4 | 5.1 | -0.8 |
| Year Lowest Occurred | 1977 | 1989 | 1975 | 1975 | 1997 | 1982 | 1992 | 1992 | 1993 | 1988 | 1976 | 1985 | 1977 |
| Mean Min. Temperature (F) | 0.1 | 6.1 | 18.1 | 31.1 | 42.1 | 51.7 | 56.1 | 54.5 | 44.7 | 33.9 | 20.7 | 7.0 | 30.5 |
| Highest Mean Min. Temperature (F) | 11.6 | 18.8 | 28.4 | 36.4 | 48.8 | 56.8 | 60.0 | 62.3 | 49.1 | 42.3 | 26.2 | 15.5 | 62.3 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1985 | 1977 | 1995 | 1987 | 1995 | 1978 | 1971 | 1999 | 1982 | 1995 |
| Lowest Mean Min. Temperature (F) | -12.3 | -5.4 | 10.9 | 26.0 | 36.4 | 46.6 | 51.4 | 49.3 | 38.4 | 27.6 | 10.8 | -6.1 | -12.3 |
| Year Lowest Occurred | 1977 | 1989 | 1975 | 1975 | 1997 | 1982 | 1992 | 1992 | 1993 | 1988 | 1976 | 1985 | 1977 |
| Mean Precipitation (in.) | 0.91 | 0.82 | 1.67 | 2.77 | 3.38 | 4.37 | 4.54 | 4.63 | 3.94 | 2.29 | 2.05 | 1.03 | 32.40 |
| Highest Precipitation (in.) | 2.76 | 3.92 | 3.27 | 5.18 | 9.40 | 10.57 | 11.85 | 12.62 | 10.47 | 5.30 | 5.39 | 2.68 | 12.62 |
| Year Highest Occurred | 1996 | 1971 | 1976 | 1975 | 1973 | 1993 | 1999 | 1980 | 1986 | 1995 | 1991 | 1984 | 1980 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.25 | 0.68 | 1.14 | 0.55 | 0.68 | 0.81 | 0.60 | 0.33 | 0.00 | 0.20 | 0.00 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1989 | 1986 | 1983 | 1998 | 1976 | 1976 | 1976 | 1976 | 1989 | 1981 |
| Heating Degree Days (F) | 1673. | 1335. | 1109. | 651. | 324. | 96. | 35. | 63. | 242. | 585. | 1032. | 1498. | 8643. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 21. | 79. | 146. | 112. | 12. | 0. | 0. | 0. | 370. |