| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.6 | 38.8 | 48.4 | 59.8 | 69.5 | 78.3 | 85.7 | 84.9 | 73.3 | 61.6 | 44.4 | 34.8 | 59.3 |
| Highest Mean Max. Temperature (F) | 49.1 | 52.5 | 58.8 | 68.5 | 77.6 | 90.9 | 92.6 | 96.4 | 83.6 | 67.2 | 55.6 | 49.0 | 96.4 |
| Year Highest Occurred | 1992 | 1991 | 1992 | 1987 | 1988 | 1988 | 1985 | 1971 | 1990 | 1974 | 1999 | 1999 | 1971 |
| Lowest Mean Max. Temperature (F) | 13.8 | 20.4 | 36.5 | 44.4 | 61.3 | 72.6 | 72.6 | 76.1 | 58.6 | 54.1 | 22.9 | 10.3 | 10.3 |
| Year Lowest Occurred | 1978 | 1989 | 1996 | 1975 | 1996 | 1975 | 1993 | 1977 | 1985 | 1984 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 18.7 | 25.2 | 34.9 | 45.4 | 55.1 | 63.6 | 69.3 | 68.1 | 57.1 | 46.0 | 31.3 | 22.0 | 44.7 |
| Highest Mean Temperature (F) | 33.6 | 38.2 | 44.1 | 52.2 | 60.9 | 73.2 | 74.1 | 76.0 | 64.4 | 49.4 | 40.5 | 35.5 | 76.0 |
| Year Highest Occurred | 1992 | 1991 | 1986 | 1980 | 1988 | 1988 | 1985 | 1971 | 1998 | 1979 | 1999 | 1999 | 1971 |
| Lowest Mean Temperature (F) | 0.5 | 9.2 | 25.6 | 32.9 | 50.1 | 59.7 | 61.3 | 60.3 | 49.1 | 40.6 | 11.7 | -2.1 | -2.1 |
| Year Lowest Occurred | 1979 | 1989 | 1989 | 1975 | 1982 | 1975 | 1993 | 1977 | 1985 | 1984 | 1985 | 1983 | 1983 |
| Mean Min. Temperature (F) | 5.7 | 11.5 | 21.4 | 30.9 | 40.6 | 48.8 | 52.8 | 51.2 | 40.8 | 30.4 | 18.2 | 9.1 | 30.1 |
| Highest Mean Min. Temperature (F) | 22.0 | 23.9 | 31.0 | 36.4 | 44.2 | 55.5 | 58.0 | 55.7 | 46.6 | 34.5 | 27.1 | 22.0 | 58.0 |
| Year Highest Occurred | 1986 | 1999 | 1986 | 1980 | 1988 | 1988 | 1998 | 1983 | 1998 | 1988 | 1998 | 1999 | 1998 |
| Lowest Mean Min. Temperature (F) | -13.9 | -2.3 | 14.5 | 21.3 | 37.0 | 45.6 | 49.2 | 44.6 | 36.7 | 24.5 | 0.6 | -14.5 | -14.5 |
| Year Lowest Occurred | 1979 | 1994 | 1989 | 1975 | 1982 | 1981 | 1972 | 1977 | 1974 | 1991 | 1985 | 1983 | 1983 |
| Mean Precipitation (in.) | 0.60 | 0.38 | 0.76 | 1.12 | 2.14 | 2.31 | 1.36 | 1.51 | 1.17 | 0.74 | 0.52 | 0.48 | 13.09 |
| Highest Precipitation (in.) | 1.69 | 1.05 | 3.07 | 3.27 | 5.46 | 5.80 | 4.03 | 4.30 | 3.47 | 2.09 | 1.27 | 2.13 | 5.80 |
| Year Highest Occurred | 1971 | 1978 | 1981 | 1973 | 1981 | 1975 | 1993 | 1974 | 1985 | 1975 | 1991 | 1977 | 1975 |
| Lowest Precipitation (in.) | 0.00 | 0.02 | 0.00 | 0.00 | 0.51 | 0.38 | 0.05 | 0.00 | 0.02 | 0.10 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1995 | 1995 | 1994 | 1981 | 1988 | 1985 | 1984 | 1988 | 1990 | 1987 | 1972 | 1991 | 1995 |
| Heating Degree Days (F) | 1438. | 1116. | 933. | 591. | 317. | 114. | 44. | 88. | 276. | 590. | 1011. | 1334. | 7852. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 8. | 71. | 176. | 183. | 38. | 0. | 0. | 0. | 477. |