| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 19.5 | 25.9 | 36.6 | 51.5 | 65.3 | 71.6 | 74.9 | 72.1 | 63.2 | 53.3 | 36.3 | 23.5 | 49.5 |
| Highest Mean Max. Temperature (F) | 30.2 | 36.3 | 44.5 | 61.1 | 74.6 | 77.5 | 79.3 | 76.5 | 71.5 | 60.3 | 47.2 | 32.2 | 79.3 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1988 | 1976 | 1983 | 1998 | 1971 | 1999 | 1998 | 1976 |
| Lowest Mean Max. Temperature (F) | 9.6 | 18.6 | 28.1 | 43.6 | 55.3 | 65.6 | 67.6 | 66.8 | 56.7 | 46.8 | 27.0 | 14.1 | 9.6 |
| Year Lowest Occurred | 1994 | 1979 | 1996 | 1996 | 1997 | 1982 | 1992 | 1997 | 1993 | 1988 | 1995 | 1983 | 1994 |
| Mean Temperature (F) | 10.1 | 15.3 | 26.1 | 39.9 | 52.8 | 60.5 | 64.7 | 62.4 | 53.5 | 43.5 | 28.5 | 15.5 | 39.4 |
| Highest Mean Temperature (F) | 21.2 | 29.1 | 34.5 | 46.9 | 60.1 | 64.7 | 68.9 | 66.9 | 59.5 | 51.2 | 37.4 | 24.3 | 68.9 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1995 | 1983 | 1995 | 1998 | 1971 | 1999 | 1994 | 1983 |
| Lowest Mean Temperature (F) | 0.1 | 6.2 | 18.3 | 33.7 | 44.8 | 53.8 | 59.0 | 58.3 | 48.0 | 38.1 | 19.6 | 5.3 | 0.1 |
| Year Lowest Occurred | 1977 | 1979 | 1996 | 1996 | 1997 | 1982 | 1992 | 1977 | 1993 | 1988 | 1995 | 1989 | 1977 |
| Mean Min. Temperature (F) | 0.7 | 4.6 | 15.5 | 28.3 | 40.2 | 49.4 | 54.4 | 52.7 | 43.8 | 33.6 | 20.7 | 7.4 | 29.3 |
| Highest Mean Min. Temperature (F) | 12.2 | 21.8 | 24.5 | 33.2 | 47.5 | 54.1 | 59.1 | 60.2 | 47.9 | 42.1 | 27.6 | 17.9 | 60.2 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1986 | 1991 | 1995 | 1983 | 1995 | 1994 | 1971 | 1999 | 1997 | 1995 |
| Lowest Mean Min. Temperature (F) | -11.1 | -6.2 | 7.7 | 22.1 | 34.2 | 42.0 | 50.3 | 46.7 | 38.0 | 26.6 | 11.5 | -4.9 | -11.1 |
| Year Lowest Occurred | 1972 | 1979 | 1972 | 1972 | 1997 | 1982 | 1992 | 1977 | 1974 | 1976 | 1976 | 1976 | 1972 |
| Mean Precipitation (in.) | 1.31 | 0.98 | 2.00 | 2.66 | 3.30 | 3.83 | 3.70 | 3.68 | 3.84 | 2.68 | 2.26 | 1.47 | 31.71 |
| Highest Precipitation (in.) | 3.01 | 2.96 | 5.43 | 4.47 | 6.95 | 8.46 | 8.92 | 6.26 | 6.91 | 4.75 | 5.05 | 3.05 | 8.92 |
| Year Highest Occurred | 1999 | 1971 | 1977 | 1973 | 1991 | 1981 | 1999 | 1972 | 2000 | 1995 | 1991 | 1971 | 1999 |
| Lowest Precipitation (in.) | 0.18 | 0.09 | 0.27 | 0.70 | 0.62 | 1.15 | 0.59 | 1.28 | 0.52 | 0.51 | 0.27 | 0.22 | 0.09 |
| Year Lowest Occurred | 1981 | 1987 | 1978 | 1971 | 1986 | 1972 | 1998 | 1981 | 1989 | 1976 | 1976 | 1994 | 1987 |
| Heating Degree Days (F) | 1702. | 1394. | 1208. | 754. | 395. | 166. | 83. | 128. | 346. | 668. | 1094. | 1536. | 9474. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 14. | 30. | 73. | 47. | 2. | 0. | 0. | 0. | 166. |