| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.8 | 39.7 | 49.7 | 60.4 | 69.3 | 80.0 | 87.8 | 87.9 | 75.5 | 64.2 | 45.1 | 34.1 | 60.5 |
| Highest Mean Max. Temperature (F) | 45.4 | 52.9 | 58.8 | 70.4 | 77.4 | 93.9 | 94.9 | 95.4 | 84.0 | 71.8 | 59.2 | 47.1 | 95.4 |
| Year Highest Occurred | 1992 | 1992 | 1992 | 1987 | 1985 | 1988 | 1988 | 1971 | 1979 | 1979 | 1999 | 1979 | 1971 |
| Lowest Mean Max. Temperature (F) | 15.3 | 23.7 | 38.8 | 48.3 | 62.7 | 72.7 | 75.4 | 80.1 | 65.9 | 59.1 | 23.7 | 14.8 | 14.8 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1975 | 1996 | 1998 | 1993 | 1980 | 1985 | 1981 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 17.8 | 25.3 | 35.5 | 45.7 | 54.7 | 64.2 | 70.5 | 70.0 | 58.3 | 47.3 | 31.2 | 20.2 | 45.1 |
| Highest Mean Temperature (F) | 29.0 | 36.4 | 43.7 | 51.7 | 60.0 | 74.0 | 75.9 | 76.4 | 65.8 | 52.0 | 42.0 | 29.7 | 76.4 |
| Year Highest Occurred | 1981 | 1991 | 1986 | 1987 | 1985 | 1988 | 1989 | 1983 | 1998 | 1979 | 1999 | 1999 | 1983 |
| Lowest Mean Temperature (F) | 0.6 | 9.2 | 26.3 | 38.1 | 50.3 | 58.5 | 62.3 | 63.3 | 51.9 | 44.3 | 12.9 | 1.5 | 0.6 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1975 | 1996 | 1998 | 1993 | 1980 | 1985 | 1991 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 3.8 | 10.8 | 21.3 | 31.0 | 40.1 | 48.4 | 53.1 | 52.1 | 41.1 | 30.4 | 17.2 | 6.3 | 29.6 |
| Highest Mean Min. Temperature (F) | 13.2 | 21.3 | 28.6 | 36.4 | 43.0 | 54.0 | 57.5 | 57.9 | 47.7 | 34.4 | 24.8 | 14.7 | 57.9 |
| Year Highest Occurred | 1986 | 1991 | 1986 | 1978 | 1994 | 1988 | 1989 | 1983 | 1998 | 1973 | 1999 | 1999 | 1983 |
| Lowest Mean Min. Temperature (F) | -14.1 | -5.4 | 13.7 | 25.7 | 36.4 | 43.2 | 48.8 | 46.5 | 36.8 | 25.8 | 2.0 | -11.9 | -14.1 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1983 | 1991 | 1991 | 1971 | 1980 | 1975 | 1987 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.83 | 0.62 | 1.06 | 1.82 | 2.46 | 2.01 | 1.14 | 0.98 | 1.71 | 1.47 | 1.03 | 0.68 | 15.81 |
| Highest Precipitation (in.) | 2.33 | 1.52 | 2.94 | 5.16 | 8.14 | 4.30 | 3.92 | 2.96 | 6.28 | 4.71 | 2.41 | 1.90 | 8.14 |
| Year Highest Occurred | 1975 | 1982 | 1977 | 1991 | 1978 | 1982 | 1993 | 1972 | 1978 | 1971 | 1978 | 1982 | 1978 |
| Lowest Precipitation (in.) | 0.08 | 0.07 | 0.12 | 0.17 | 0.71 | 0.32 | 0.05 | 0.14 | 0.28 | 0.02 | 0.21 | 0.04 | 0.02 |
| Year Lowest Occurred | 1992 | 1990 | 1978 | 1980 | 1985 | 1988 | 1988 | 1996 | 1990 | 1987 | 1980 | 1991 | 1987 |
| Heating Degree Days (F) | 1463. | 1114. | 915. | 579. | 327. | 109. | 31. | 46. | 235. | 549. | 1016. | 1390. | 7774. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 7. | 85. | 199. | 201. | 35. | 0. | 0. | 0. | 527. |