| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 35.0 | 39.5 | 46.8 | 55.2 | 64.3 | 75.4 | 83.3 | 82.9 | 71.7 | 59.5 | 44.3 | 37.3 | 57.9 |
| Highest Mean Max. Temperature (F) | 45.1 | 50.1 | 54.5 | 64.0 | 72.1 | 88.1 | 89.5 | 89.4 | 80.8 | 64.7 | 62.9 | 46.9 | 89.5 |
| Year Highest Occurred | 1992 | 1992 | 1986 | 1987 | 1994 | 1988 | 2000 | 2000 | 1998 | 1988 | 1999 | 1979 | 2000 |
| Lowest Mean Max. Temperature (F) | 18.1 | 25.3 | 37.9 | 47.9 | 57.2 | 66.8 | 73.7 | 76.0 | 64.5 | 54.4 | 26.7 | 17.9 | 17.9 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1975 | 1995 | 1998 | 1992 | 1977 | 1985 | 1971 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 21.2 | 26.4 | 33.9 | 42.0 | 50.9 | 60.6 | 67.1 | 65.9 | 55.2 | 44.0 | 30.5 | 23.1 | 43.4 |
| Highest Mean Temperature (F) | 30.4 | 35.9 | 41.3 | 47.8 | 57.2 | 71.3 | 71.6 | 71.4 | 64.7 | 47.3 | 45.1 | 30.7 | 71.6 |
| Year Highest Occurred | 1983 | 1991 | 1986 | 1987 | 1994 | 1988 | 2000 | 2000 | 1998 | 1988 | 1999 | 1999 | 2000 |
| Lowest Mean Temperature (F) | 4.1 | 12.0 | 26.8 | 35.7 | 45.6 | 54.8 | 59.9 | 59.9 | 48.6 | 39.1 | 13.4 | 4.9 | 4.1 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1975 | 1983 | 1998 | 1993 | 1974 | 1985 | 1984 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 7.3 | 13.3 | 21.0 | 28.7 | 37.4 | 45.7 | 50.8 | 48.9 | 38.6 | 28.4 | 16.6 | 8.9 | 28.8 |
| Highest Mean Min. Temperature (F) | 17.7 | 22.9 | 28.1 | 32.8 | 42.6 | 54.5 | 56.1 | 53.6 | 48.5 | 32.0 | 27.2 | 16.5 | 56.1 |
| Year Highest Occurred | 1983 | 1991 | 1986 | 1977 | 1987 | 1988 | 1998 | 1983 | 1998 | 1998 | 1999 | 1994 | 1998 |
| Lowest Mean Min. Temperature (F) | -10.0 | -1.3 | 15.7 | 23.5 | 32.8 | 41.7 | 45.7 | 42.6 | 32.2 | 23.0 | 0.0 | -8.1 | -10.0 |
| Year Lowest Occurred | 1979 | 1989 | 1996 | 1997 | 1974 | 1975 | 1993 | 1974 | 1984 | 1984 | 1985 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.31 | 0.34 | 0.64 | 1.51 | 2.26 | 2.07 | 1.58 | 1.06 | 1.12 | 1.06 | 0.45 | 0.32 | 12.72 |
| Highest Precipitation (in.) | 1.02 | 1.26 | 1.85 | 5.74 | 6.04 | 6.48 | 4.58 | 3.02 | 3.22 | 3.30 | 0.97 | 1.07 | 6.48 |
| Year Highest Occurred | 2000 | 1971 | 1977 | 1984 | 1978 | 1992 | 1997 | 1980 | 1982 | 1971 | 1983 | 1977 | 1992 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.07 | 0.23 | 0.57 | 0.35 | 0.20 | 0.02 | 0.18 | 0.06 | 0.00 | 0.02 | 0.00 |
| Year Lowest Occurred | 1992 | 1992 | 1997 | 1987 | 1998 | 1978 | 1999 | 1973 | 1979 | 1985 | 1997 | 1979 | 1992 |
| Heating Degree Days (F) | 1360. | 1081. | 963. | 691. | 442. | 187. | 67. | 100. | 320. | 653. | 1037. | 1299. | 8200. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 3. | 52. | 130. | 127. | 24. | 0. | 0. | 0. | 336. |