| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 20.8 | 26.3 | 36.5 | 50.5 | 65.8 | 74.0 | 78.6 | 75.9 | 66.2 | 53.7 | 37.4 | 25.1 | 50.9 |
| Highest Mean Max. Temperature (F) | 31.5 | 36.3 | 44.8 | 59.0 | 77.4 | 80.5 | 84.3 | 80.5 | 73.8 | 60.8 | 47.3 | 32.0 | 84.3 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1988 | 1989 | 1983 | 1998 | 1973 | 1999 | 1997 | 1989 |
| Lowest Mean Max. Temperature (F) | 12.1 | 18.2 | 30.1 | 43.3 | 56.1 | 68.6 | 71.4 | 71.9 | 60.9 | 47.6 | 28.6 | 15.5 | 12.1 |
| Year Lowest Occurred | 1994 | 1979 | 1996 | 1995 | 1997 | 1982 | 1992 | 1977 | 1993 | 1988 | 1995 | 1983 | 1994 |
| Mean Temperature (F) | 9.4 | 13.7 | 24.4 | 38.3 | 51.7 | 60.5 | 65.2 | 63.1 | 54.1 | 43.0 | 29.2 | 15.8 | 39.0 |
| Highest Mean Temperature (F) | 19.5 | 27.0 | 34.0 | 44.6 | 59.9 | 65.1 | 70.4 | 68.2 | 59.9 | 51.4 | 36.9 | 24.4 | 70.4 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1986 | 1977 | 1995 | 1983 | 1995 | 1998 | 1971 | 1999 | 1997 | 1983 |
| Lowest Mean Temperature (F) | 0.0 | 3.4 | 17.2 | 32.0 | 44.2 | 54.4 | 59.1 | 58.9 | 48.6 | 37.3 | 21.3 | 5.6 | 0.0 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1997 | 1982 | 1992 | 1977 | 1974 | 1976 | 1995 | 1983 | 1977 |
| Mean Min. Temperature (F) | -2.1 | 1.0 | 12.2 | 26.0 | 37.6 | 47.0 | 51.7 | 50.3 | 41.9 | 32.3 | 20.9 | 6.4 | 27.1 |
| Highest Mean Min. Temperature (F) | 8.3 | 17.7 | 24.2 | 32.8 | 44.1 | 51.1 | 56.6 | 57.4 | 46.5 | 42.5 | 27.2 | 16.8 | 57.4 |
| Year Highest Occurred | 1998 | 1998 | 1973 | 1986 | 1991 | 1995 | 1983 | 1995 | 1994 | 1971 | 1998 | 1997 | 1995 |
| Lowest Mean Min. Temperature (F) | -12.9 | -11.4 | 4.2 | 18.5 | 31.7 | 40.2 | 46.8 | 44.9 | 34.0 | 23.8 | 11.4 | -6.5 | -12.9 |
| Year Lowest Occurred | 1977 | 1979 | 1984 | 1975 | 1976 | 1982 | 1992 | 1976 | 1976 | 1976 | 1976 | 1976 | 1977 |
| Mean Precipitation (in.) | 1.24 | 0.82 | 1.79 | 2.17 | 2.92 | 3.86 | 3.57 | 3.59 | 3.66 | 2.67 | 2.01 | 1.35 | 29.65 |
| Highest Precipitation (in.) | 2.43 | 2.97 | 3.61 | 3.94 | 5.63 | 12.48 | 6.95 | 7.07 | 7.99 | 4.82 | 4.56 | 2.41 | 12.48 |
| Year Highest Occurred | 1980 | 1971 | 1977 | 1977 | 1983 | 1981 | 1987 | 1988 | 1980 | 1995 | 1985 | 1996 | 1981 |
| Lowest Precipitation (in.) | 0.29 | 0.14 | 0.39 | 0.43 | 0.13 | 1.32 | 1.35 | 0.96 | 0.79 | 0.99 | 0.39 | 0.20 | 0.13 |
| Year Lowest Occurred | 1981 | 1993 | 1980 | 1971 | 1986 | 1988 | 1976 | 1976 | 1976 | 1976 | 1981 | 1994 | 1986 |
| Heating Degree Days (F) | 1726. | 1438. | 1260. | 803. | 429. | 166. | 77. | 117. | 332. | 682. | 1075. | 1527. | 9632. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 17. | 31. | 81. | 58. | 3. | 0. | 0. | 0. | 190. |