| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 22.4 | 28.2 | 38.2 | 51.9 | 67.1 | 74.6 | 78.8 | 76.6 | 67.1 | 55.1 | 38.3 | 26.3 | 52.1 |
| Highest Mean Max. Temperature (F) | 32.8 | 39.3 | 44.4 | 62.0 | 76.7 | 80.8 | 85.2 | 82.8 | 75.8 | 63.0 | 46.9 | 33.4 | 85.2 |
| Year Highest Occurred | 1990 | 1998 | 1987 | 1987 | 1977 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1998 | 1988 |
| Lowest Mean Max. Temperature (F) | 13.8 | 20.3 | 32.6 | 41.7 | 57.9 | 68.8 | 71.8 | 70.0 | 62.8 | 48.7 | 29.1 | 17.5 | 13.8 |
| Year Lowest Occurred | 1977 | 1979 | 1972 | 1995 | 1997 | 1982 | 1992 | 1994 | 1974 | 1979 | 1995 | 1989 | 1977 |
| Mean Temperature (F) | 11.3 | 15.2 | 24.6 | 37.7 | 51.2 | 59.5 | 64.3 | 62.5 | 54.2 | 43.5 | 29.4 | 16.9 | 39.2 |
| Highest Mean Temperature (F) | 22.6 | 27.1 | 33.6 | 45.4 | 60.1 | 64.3 | 69.4 | 67.7 | 58.5 | 51.2 | 35.2 | 23.9 | 69.4 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1987 | 1977 | 1976 | 1983 | 1983 | 1978 | 1971 | 1999 | 1997 | 1983 |
| Lowest Mean Temperature (F) | 1.9 | 5.9 | 18.2 | 30.5 | 42.7 | 53.5 | 59.0 | 58.3 | 49.7 | 38.8 | 19.4 | 7.5 | 1.9 |
| Year Lowest Occurred | 1994 | 1979 | 1972 | 1975 | 1997 | 1982 | 1992 | 1977 | 1974 | 1980 | 1995 | 2000 | 1994 |
| Mean Min. Temperature (F) | 0.2 | 2.1 | 11.0 | 23.4 | 35.3 | 44.3 | 49.7 | 48.4 | 41.2 | 31.8 | 20.5 | 7.4 | 26.3 |
| Highest Mean Min. Temperature (F) | 12.3 | 15.5 | 23.2 | 30.2 | 43.5 | 49.3 | 54.8 | 53.9 | 47.2 | 40.7 | 25.9 | 16.9 | 54.8 |
| Year Highest Occurred | 1990 | 1984 | 1973 | 1986 | 1977 | 1976 | 1977 | 1973 | 1978 | 1971 | 1988 | 1982 | 1977 |
| Lowest Mean Min. Temperature (F) | -10.3 | -8.5 | 3.5 | 15.0 | 27.5 | 38.1 | 43.1 | 42.7 | 35.3 | 27.3 | 9.6 | -4.5 | -10.3 |
| Year Lowest Occurred | 1994 | 1979 | 1984 | 1975 | 1997 | 1982 | 1998 | 1997 | 2000 | 1999 | 1995 | 2000 | 1994 |
| Mean Precipitation (in.) | 1.82 | 1.32 | 2.32 | 2.42 | 3.10 | 3.35 | 3.80 | 3.74 | 3.88 | 3.29 | 2.44 | 1.82 | 33.30 |
| Highest Precipitation (in.) | 4.74 | 3.53 | 4.19 | 7.42 | 6.77 | 6.27 | 7.50 | 8.92 | 7.81 | 5.73 | 4.94 | 3.38 | 8.92 |
| Year Highest Occurred | 1997 | 1971 | 1979 | 1985 | 1999 | 1981 | 1992 | 1988 | 1972 | 1979 | 1988 | 1996 | 1988 |
| Lowest Precipitation (in.) | 0.72 | 0.46 | 0.52 | 0.76 | 0.17 | 1.00 | 0.90 | 0.48 | 0.75 | 1.19 | 0.71 | 0.28 | 0.17 |
| Year Lowest Occurred | 1995 | 1994 | 1993 | 1971 | 1986 | 1988 | 1989 | 1976 | 1976 | 1976 | 1997 | 1994 | 1986 |
| Heating Degree Days (F) | 1664. | 1396. | 1253. | 819. | 444. | 190. | 96. | 128. | 328. | 669. | 1068. | 1493. | 9548. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 15. | 22. | 71. | 51. | 3. | 0. | 0. | 0. | 162. |