| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 23.1 | 28.7 | 41.0 | 57.4 | 70.7 | 78.1 | 82.8 | 80.3 | 71.7 | 58.9 | 40.9 | 27.5 | 55.1 |
| Highest Mean Max. Temperature (F) | 37.3 | 39.3 | 52.5 | 68.4 | 80.2 | 88.1 | 90.0 | 85.9 | 79.0 | 64.1 | 53.6 | 36.5 | 90.0 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1988 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1998 | 1988 |
| Lowest Mean Max. Temperature (F) | 10.5 | 18.4 | 31.2 | 45.6 | 63.8 | 72.0 | 75.0 | 75.6 | 64.8 | 50.6 | 33.4 | 14.1 | 10.5 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1975 | 1996 | 1993 | 1992 | 1992 | 1993 | 1972 | 1996 | 1983 | 1977 |
| Mean Temperature (F) | 13.0 | 19.2 | 31.4 | 45.9 | 59.1 | 67.1 | 71.4 | 69.0 | 60.4 | 48.0 | 32.3 | 18.8 | 44.6 |
| Highest Mean Temperature (F) | 26.8 | 32.5 | 41.0 | 53.4 | 67.3 | 73.4 | 75.7 | 74.9 | 66.4 | 54.0 | 41.4 | 27.6 | 75.7 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1997 | 1988 |
| Lowest Mean Temperature (F) | 0.3 | 8.1 | 22.1 | 37.8 | 53.7 | 61.0 | 64.5 | 64.5 | 54.6 | 42.3 | 24.9 | 5.4 | 0.3 |
| Year Lowest Occurred | 1977 | 1989 | 1975 | 1975 | 1997 | 1982 | 1992 | 1977 | 1993 | 1976 | 1996 | 1983 | 1977 |
| Mean Min. Temperature (F) | 2.8 | 9.6 | 21.7 | 34.4 | 47.4 | 56.0 | 60.0 | 57.6 | 49.1 | 37.0 | 23.7 | 10.0 | 34.1 |
| Highest Mean Min. Temperature (F) | 16.3 | 26.6 | 32.6 | 42.4 | 55.5 | 61.2 | 65.3 | 63.8 | 53.7 | 43.9 | 29.2 | 21.3 | 65.3 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1991 | 1983 | 1983 | 1998 | 1973 | 1999 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -10.1 | -4.3 | 12.9 | 28.8 | 41.9 | 48.2 | 54.0 | 52.1 | 42.7 | 30.1 | 16.3 | -3.6 | -10.1 |
| Year Lowest Occurred | 1982 | 1989 | 1975 | 1996 | 1997 | 1982 | 1992 | 1977 | 1974 | 1976 | 1996 | 1985 | 1982 |
| Mean Precipitation (in.) | 0.90 | 0.66 | 1.68 | 2.41 | 3.54 | 4.74 | 4.16 | 4.02 | 3.35 | 2.50 | 1.64 | 0.90 | 30.50 |
| Highest Precipitation (in.) | 3.94 | 2.04 | 4.52 | 5.52 | 6.30 | 8.08 | 8.62 | 6.62 | 8.42 | 6.39 | 4.73 | 3.13 | 8.62 |
| Year Highest Occurred | 1975 | 1981 | 1985 | 1986 | 1993 | 1984 | 1972 | 1980 | 1986 | 1971 | 1975 | 1982 | 1972 |
| Lowest Precipitation (in.) | 0.00 | 0.12 | 0.47 | 0.41 | 1.26 | 1.34 | 1.52 | 0.89 | 1.13 | 0.33 | 0.13 | 0.00 | 0.00 |
| Year Lowest Occurred | 1974 | 1982 | 1974 | 1987 | 1976 | 1987 | 1982 | 1976 | 1974 | 1976 | 1976 | 1979 | 1974 |
| Heating Degree Days (F) | 1614. | 1284. | 1044. | 575. | 236. | 61. | 17. | 34. | 174. | 529. | 981. | 1434. | 7983. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 3. | 52. | 123. | 215. | 156. | 37. | 1. | 0. | 0. | 587. |