| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 37.9 | 44.0 | 50.5 | 57.3 | 64.2 | 72.3 | 82.0 | 83.5 | 75.2 | 64.4 | 47.2 | 38.7 | 59.8 |
| Highest Mean Max. Temperature (F) | 46.8 | 53.9 | 59.2 | 67.3 | 72.6 | 80.8 | 89.4 | 90.9 | 81.4 | 76.5 | 55.9 | 46.0 | 90.9 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1992 | 1986 | 1985 | 1971 | 1987 | 1988 | 1999 | 1991 | 1971 |
| Lowest Mean Max. Temperature (F) | 25.3 | 32.6 | 44.8 | 50.4 | 59.2 | 66.0 | 70.3 | 75.0 | 66.2 | 57.9 | 33.3 | 27.0 | 25.3 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1977 | 1991 | 1993 | 1976 | 1985 | 1984 | 1985 | 1985 | 1979 |
| Mean Temperature (F) | 26.4 | 31.5 | 37.4 | 42.7 | 48.6 | 55.2 | 61.2 | 61.3 | 53.4 | 45.0 | 35.1 | 27.7 | 43.8 |
| Highest Mean Temperature (F) | 34.7 | 39.3 | 43.1 | 48.0 | 53.9 | 59.8 | 66.6 | 66.6 | 58.9 | 52.3 | 41.8 | 35.7 | 66.6 |
| Year Highest Occurred | 1981 | 1992 | 1986 | 1987 | 1993 | 1986 | 1998 | 1971 | 1998 | 1988 | 1999 | 1973 | 1971 |
| Lowest Mean Temperature (F) | 11.4 | 15.5 | 32.5 | 37.9 | 45.6 | 51.3 | 54.8 | 56.7 | 48.0 | 40.8 | 21.2 | 14.3 | 11.4 |
| Year Lowest Occurred | 1979 | 1989 | 1985 | 1975 | 1999 | 1991 | 1993 | 1980 | 1985 | 1971 | 1985 | 1985 | 1979 |
| Mean Min. Temperature (F) | 14.8 | 19.0 | 24.2 | 28.0 | 33.0 | 38.1 | 40.3 | 39.0 | 31.6 | 25.5 | 22.9 | 16.6 | 27.8 |
| Highest Mean Min. Temperature (F) | 23.2 | 26.1 | 29.0 | 31.4 | 39.1 | 42.2 | 45.2 | 43.7 | 38.5 | 31.1 | 28.3 | 27.3 | 45.2 |
| Year Highest Occurred | 1994 | 1980 | 1978 | 1979 | 1993 | 1982 | 1998 | 1983 | 1998 | 1975 | 1986 | 1973 | 1998 |
| Lowest Mean Min. Temperature (F) | -2.6 | -1.5 | 19.8 | 23.4 | 28.6 | 34.7 | 36.8 | 33.5 | 26.0 | 20.2 | 9.0 | 1.7 | -2.6 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1982 | 1992 | 1985 | 1999 | 1980 | 1999 | 1987 | 1985 | 1985 | 1979 |
| Mean Precipitation (in.) | 1.78 | 1.39 | 1.37 | 1.45 | 1.77 | 1.29 | 0.73 | 0.85 | 0.75 | 1.21 | 2.00 | 1.96 | 16.55 |
| Highest Precipitation (in.) | 2.91 | 3.72 | 3.02 | 3.19 | 3.67 | 2.73 | 2.81 | 4.08 | 1.91 | 2.69 | 5.04 | 5.81 | 5.81 |
| Year Highest Occurred | 1998 | 1986 | 1983 | 1995 | 1991 | 1995 | 1997 | 1976 | 1977 | 1979 | 1973 | 1996 | 1996 |
| Lowest Precipitation (in.) | 0.35 | 0.49 | 0.21 | 0.17 | 0.03 | 0.10 | 0.01 | 0.00 | 0.00 | 0.03 | 0.65 | 0.01 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1992 | 1977 | 1992 | 1973 | 1988 | 1996 | 1999 | 1988 | 1993 | 1976 | 1996 |
| Heating Degree Days (F) | 1199. | 938. | 856. | 671. | 508. | 298. | 148. | 152. | 352. | 622. | 899. | 1158. | 7801. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 3. | 28. | 35. | 5. | 0. | 0. | 0. | 71. |