| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 19.9 | 26.6 | 37.9 | 54.4 | 68.0 | 76.8 | 81.6 | 79.5 | 70.1 | 57.5 | 37.9 | 23.7 | 52.8 |
| Highest Mean Max. Temperature (F) | 35.6 | 40.6 | 48.7 | 66.4 | 76.2 | 86.9 | 88.5 | 87.8 | 76.0 | 65.1 | 54.2 | 36.5 | 88.5 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1976 | 1983 | 1979 | 1973 | 1999 | 1979 | 1976 |
| Lowest Mean Max. Temperature (F) | 8.0 | 14.6 | 29.4 | 41.5 | 60.9 | 70.5 | 70.7 | 73.0 | 63.4 | 52.4 | 26.3 | 5.3 | 5.3 |
| Year Lowest Occurred | 1979 | 1979 | 1984 | 1975 | 1996 | 1993 | 1992 | 1992 | 1993 | 1995 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 9.7 | 16.8 | 28.1 | 43.3 | 56.7 | 66.0 | 70.8 | 68.9 | 58.9 | 46.0 | 28.9 | 14.4 | 42.4 |
| Highest Mean Temperature (F) | 24.5 | 30.0 | 36.6 | 52.2 | 64.1 | 73.9 | 75.5 | 75.9 | 64.2 | 52.1 | 41.8 | 25.1 | 75.9 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1974 | 1983 | 1998 | 1973 | 1999 | 1979 | 1983 |
| Lowest Mean Temperature (F) | -2.8 | 3.7 | 20.2 | 35.0 | 50.9 | 61.3 | 62.9 | 63.8 | 53.6 | 41.2 | 18.4 | -2.1 | -2.8 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1975 | 1979 | 1982 | 1992 | 1992 | 1993 | 1976 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -0.5 | 7.0 | 18.2 | 32.1 | 45.4 | 55.2 | 60.0 | 58.3 | 47.7 | 34.4 | 19.8 | 5.0 | 31.9 |
| Highest Mean Min. Temperature (F) | 13.4 | 21.5 | 26.1 | 37.9 | 52.0 | 60.9 | 64.0 | 64.0 | 53.7 | 39.0 | 29.4 | 15.6 | 64.0 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1988 | 1983 | 1983 | 1998 | 1973 | 1999 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -14.2 | -7.3 | 10.3 | 27.4 | 39.2 | 50.0 | 55.0 | 53.2 | 41.4 | 28.2 | 10.4 | -9.6 | -14.2 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1996 | 1979 | 1982 | 1992 | 1977 | 1974 | 1976 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.78 | 0.66 | 1.79 | 2.25 | 3.12 | 4.27 | 3.46 | 3.12 | 2.44 | 2.03 | 1.32 | 0.53 | 25.77 |
| Highest Precipitation (in.) | 2.39 | 1.53 | 5.29 | 5.85 | 8.51 | 16.12 | 7.27 | 6.34 | 6.27 | 6.85 | 5.21 | 1.42 | 16.12 |
| Year Highest Occurred | 1979 | 1977 | 1977 | 1986 | 1972 | 1992 | 1997 | 1988 | 1999 | 1984 | 1983 | 1977 | 1992 |
| Lowest Precipitation (in.) | 0.00 | 0.09 | 0.03 | 0.13 | 0.38 | 0.47 | 1.18 | 1.09 | 0.38 | 0.17 | 0.02 | 0.00 | 0.00 |
| Year Lowest Occurred | 1990 | 1983 | 1971 | 1980 | 1976 | 1973 | 1984 | 1984 | 1998 | 1988 | 1984 | 1986 | 1990 |
| Heating Degree Days (F) | 1716. | 1350. | 1144. | 655. | 285. | 73. | 28. | 42. | 209. | 591. | 1084. | 1571. | 8748. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 2. | 28. | 102. | 209. | 162. | 26. | 0. | 0. | 0. | 529. |