| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 20.9 | 29.8 | 42.0 | 58.1 | 70.4 | 79.0 | 84.2 | 83.5 | 71.5 | 58.1 | 37.0 | 24.4 | 54.9 |
| Highest Mean Max. Temperature (F) | 34.1 | 42.7 | 52.5 | 67.3 | 77.9 | 92.9 | 91.0 | 90.7 | 81.3 | 62.7 | 52.3 | 38.9 | 92.9 |
| Year Highest Occurred | 1992 | 1984 | 1981 | 1980 | 1980 | 1988 | 1989 | 1983 | 1998 | 1974 | 1999 | 1997 | 1988 |
| Lowest Mean Max. Temperature (F) | 6.3 | 13.6 | 33.3 | 43.8 | 63.2 | 72.5 | 73.6 | 74.6 | 61.0 | 53.0 | 20.9 | 6.5 | 6.3 |
| Year Lowest Occurred | 1982 | 1989 | 1982 | 1975 | 1974 | 1998 | 1993 | 1987 | 1986 | 1972 | 1985 | 1983 | 1982 |
| Mean Temperature (F) | 9.3 | 18.2 | 29.9 | 43.6 | 55.6 | 64.6 | 68.8 | 67.7 | 55.9 | 43.8 | 26.2 | 13.6 | 41.4 |
| Highest Mean Temperature (F) | 23.2 | 31.1 | 40.3 | 50.8 | 61.5 | 77.1 | 75.4 | 74.4 | 62.7 | 46.8 | 35.6 | 25.2 | 77.1 |
| Year Highest Occurred | 1986 | 1984 | 1986 | 1987 | 1988 | 1988 | 1989 | 1983 | 1998 | 1973 | 1999 | 1997 | 1988 |
| Lowest Mean Temperature (F) | -7.0 | 1.7 | 21.5 | 34.7 | 50.2 | 59.3 | 61.9 | 61.4 | 50.5 | 39.9 | 11.8 | -3.9 | -7.0 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1975 | 1974 | 1985 | 1993 | 1977 | 1985 | 1972 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -2.3 | 6.6 | 17.7 | 29.1 | 40.7 | 50.2 | 53.4 | 51.9 | 40.2 | 29.4 | 15.3 | 2.7 | 27.9 |
| Highest Mean Min. Temperature (F) | 13.8 | 20.7 | 28.6 | 35.0 | 45.9 | 61.3 | 59.7 | 58.1 | 44.1 | 34.8 | 23.0 | 12.5 | 61.3 |
| Year Highest Occurred | 1986 | 1998 | 1986 | 1987 | 1977 | 1988 | 1989 | 1983 | 1998 | 1994 | 1992 | 1993 | 1988 |
| Lowest Mean Min. Temperature (F) | -20.3 | -10.6 | 8.6 | 25.1 | 36.5 | 44.7 | 48.8 | 46.7 | 33.1 | 24.9 | 2.7 | -14.3 | -20.3 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1979 | 1997 | 1985 | 1999 | 1977 | 1999 | 1999 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.34 | 0.31 | 0.61 | 0.82 | 1.87 | 2.74 | 2.24 | 1.36 | 1.36 | 0.72 | 0.41 | 0.37 | 13.15 |
| Highest Precipitation (in.) | 1.20 | 1.18 | 1.99 | 2.49 | 6.09 | 8.20 | 12.67 | 3.77 | 4.97 | 3.42 | 1.81 | 0.90 | 12.67 |
| Year Highest Occurred | 1989 | 1998 | 1975 | 1992 | 1972 | 1976 | 1993 | 1974 | 1986 | 1998 | 2000 | 1973 | 1993 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.00 | 0.24 | 0.85 | 0.29 | 0.00 | 0.08 | 0.06 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1973 | 1996 | 1994 | 1987 | 1980 | 1974 | 1984 | 1971 | 1974 | 1993 | 1999 | 1997 | 1973 |
| Heating Degree Days (F) | 1729. | 1310. | 1090. | 643. | 310. | 116. | 46. | 76. | 300. | 658. | 1165. | 1594. | 9037. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 18. | 104. | 164. | 158. | 26. | 0. | 0. | 0. | 470. |