| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 24.1 | 28.9 | 40.5 | 55.1 | 68.9 | 78.2 | 82.4 | 79.6 | 71.3 | 59.1 | 42.8 | 29.3 | 55.0 |
| Highest Mean Max. Temperature (F) | 35.7 | 38.5 | 50.1 | 62.9 | 79.2 | 86.3 | 87.5 | 86.0 | 77.8 | 65.4 | 52.3 | 38.3 | 87.5 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1977 | 1988 | 1988 | 1988 | 1998 | 1973 | 1999 | 1998 | 1988 |
| Lowest Mean Max. Temperature (F) | 12.3 | 18.9 | 33.3 | 48.2 | 59.3 | 73.1 | 76.2 | 74.1 | 65.6 | 53.8 | 35.1 | 19.0 | 12.3 |
| Year Lowest Occurred | 1977 | 1979 | 1971 | 1975 | 1997 | 1993 | 1992 | 1997 | 1993 | 1980 | 1995 | 1983 | 1977 |
| Mean Temperature (F) | 15.5 | 20.1 | 31.2 | 44.4 | 56.9 | 66.4 | 71.0 | 68.7 | 60.1 | 48.7 | 34.7 | 21.7 | 45.0 |
| Highest Mean Temperature (F) | 27.8 | 31.3 | 39.6 | 50.1 | 64.6 | 71.3 | 75.2 | 74.4 | 65.5 | 56.4 | 41.8 | 29.8 | 75.2 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1977 | 1977 | 1988 | 1983 | 1988 | 1998 | 1971 | 1999 | 1982 | 1983 |
| Lowest Mean Temperature (F) | 2.8 | 8.8 | 24.8 | 38.5 | 48.6 | 60.4 | 64.9 | 64.4 | 55.7 | 44.0 | 27.1 | 10.5 | 2.8 |
| Year Lowest Occurred | 1977 | 1979 | 1989 | 1975 | 1997 | 1982 | 1992 | 1997 | 1993 | 1976 | 1995 | 1983 | 1977 |
| Mean Min. Temperature (F) | 6.9 | 11.2 | 21.9 | 33.6 | 44.8 | 54.6 | 59.6 | 57.8 | 48.9 | 38.3 | 26.5 | 14.0 | 34.8 |
| Highest Mean Min. Temperature (F) | 19.8 | 24.0 | 29.1 | 38.9 | 51.7 | 59.3 | 64.2 | 64.4 | 53.6 | 47.4 | 32.2 | 22.8 | 64.4 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1985 | 1991 | 1987 | 1983 | 1995 | 1994 | 1971 | 1998 | 1997 | 1995 |
| Lowest Mean Min. Temperature (F) | -6.8 | -1.2 | 14.7 | 28.0 | 37.9 | 47.2 | 53.5 | 52.6 | 43.5 | 32.4 | 18.7 | 1.5 | -6.8 |
| Year Lowest Occurred | 1977 | 1979 | 1989 | 1982 | 1997 | 1982 | 1990 | 1992 | 1974 | 1976 | 1976 | 1976 | 1977 |
| Mean Precipitation (in.) | 1.41 | 1.22 | 2.16 | 2.72 | 2.93 | 3.81 | 3.57 | 3.83 | 3.62 | 2.40 | 2.26 | 1.57 | 31.50 |
| Highest Precipitation (in.) | 3.68 | 3.34 | 5.30 | 5.53 | 7.46 | 9.14 | 6.96 | 8.03 | 12.70 | 4.95 | 5.94 | 3.88 | 12.70 |
| Year Highest Occurred | 1999 | 1971 | 1979 | 1993 | 1978 | 1999 | 1986 | 1975 | 1986 | 1991 | 1985 | 1971 | 1986 |
| Lowest Precipitation (in.) | 0.03 | 0.16 | 0.17 | 0.66 | 0.31 | 1.13 | 1.17 | 1.02 | 0.13 | 0.18 | 0.09 | 0.18 | 0.03 |
| Year Lowest Occurred | 1981 | 1978 | 1978 | 1997 | 1988 | 1988 | 1995 | 1976 | 1979 | 1975 | 1976 | 1993 | 1981 |
| Heating Degree Days (F) | 1535. | 1258. | 1048. | 621. | 297. | 66. | 18. | 36. | 173. | 507. | 912. | 1344. | 7815. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 44. | 108. | 203. | 151. | 26. | 1. | 0. | 0. | 534. |