| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 26.1 | 31.9 | 43.3 | 57.0 | 69.8 | 79.0 | 82.9 | 80.6 | 72.3 | 60.3 | 43.9 | 31.1 | 56.5 |
| Highest Mean Max. Temperature (F) | 38.9 | 41.2 | 52.4 | 66.3 | 79.1 | 85.9 | 88.3 | 85.7 | 78.1 | 67.0 | 55.4 | 40.0 | 88.3 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1985 | 1977 | 1988 | 1988 | 1983 | 1998 | 1971 | 1999 | 1998 | 1988 |
| Lowest Mean Max. Temperature (F) | 14.4 | 22.9 | 36.1 | 49.6 | 62.6 | 73.9 | 76.8 | 75.7 | 65.9 | 54.4 | 36.2 | 19.2 | 14.4 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1983 | 1982 | 1992 | 1997 | 1993 | 1988 | 1995 | 1983 | 1977 |
| Mean Temperature (F) | 13.9 | 19.2 | 30.9 | 43.5 | 55.6 | 64.8 | 69.1 | 66.5 | 58.0 | 46.4 | 32.6 | 19.9 | 43.4 |
| Highest Mean Temperature (F) | 27.8 | 32.6 | 38.0 | 52.0 | 63.3 | 69.5 | 73.2 | 73.4 | 61.9 | 54.0 | 39.8 | 28.7 | 73.4 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1985 | 1977 | 1995 | 1983 | 1995 | 1978 | 1971 | 1999 | 1994 | 1995 |
| Lowest Mean Temperature (F) | 0.2 | 6.6 | 22.3 | 37.4 | 50.0 | 59.3 | 63.0 | 61.8 | 52.5 | 40.1 | 24.6 | 6.6 | 0.2 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1975 | 1996 | 1982 | 1992 | 1992 | 1993 | 1988 | 1995 | 1985 | 1977 |
| Mean Min. Temperature (F) | 1.6 | 6.5 | 18.5 | 29.9 | 41.4 | 50.6 | 55.3 | 52.3 | 43.6 | 32.5 | 21.2 | 8.6 | 30.2 |
| Highest Mean Min. Temperature (F) | 16.6 | 24.0 | 25.5 | 37.6 | 48.7 | 55.5 | 59.6 | 61.7 | 48.4 | 40.9 | 27.3 | 19.7 | 61.7 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1985 | 1991 | 1995 | 1983 | 1995 | 1994 | 1971 | 1987 | 1994 | 1995 |
| Lowest Mean Min. Temperature (F) | -14.0 | -9.7 | 8.4 | 24.7 | 35.7 | 44.8 | 49.2 | 46.1 | 38.6 | 25.7 | 12.0 | -7.8 | -14.0 |
| Year Lowest Occurred | 1977 | 1979 | 1975 | 1996 | 1971 | 1982 | 1992 | 1992 | 1974 | 1988 | 1976 | 1985 | 1977 |
| Mean Precipitation (in.) | 1.08 | 1.03 | 2.08 | 3.61 | 3.48 | 4.16 | 4.44 | 4.45 | 3.53 | 2.48 | 2.32 | 1.13 | 33.79 |
| Highest Precipitation (in.) | 2.99 | 3.10 | 5.98 | 7.90 | 6.44 | 9.80 | 14.79 | 11.73 | 10.40 | 5.69 | 5.29 | 2.27 | 14.79 |
| Year Highest Occurred | 1996 | 1971 | 1998 | 1999 | 1973 | 2000 | 1993 | 1980 | 1992 | 1984 | 1982 | 2000 | 1993 |
| Lowest Precipitation (in.) | 0.03 | 0.00 | 0.21 | 0.74 | 0.04 | 1.21 | 1.41 | 1.18 | 0.37 | 0.25 | 0.08 | 0.09 | 0.00 |
| Year Lowest Occurred | 1981 | 1995 | 1978 | 1997 | 1981 | 1992 | 1990 | 1996 | 1975 | 1975 | 1976 | 1998 | 1995 |
| Heating Degree Days (F) | 1587. | 1282. | 1058. | 648. | 316. | 83. | 28. | 72. | 225. | 576. | 973. | 1400. | 8248. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 25. | 78. | 155. | 117. | 12. | 0. | 0. | 0. | 387. |