| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 27.0 | 33.8 | 41.8 | 50.1 | 60.5 | 70.1 | 78.7 | 79.0 | 68.7 | 55.6 | 37.0 | 27.1 | 52.5 |
| Highest Mean Max. Temperature (F) | 34.4 | 40.8 | 49.9 | 59.8 | 67.1 | 80.1 | 86.9 | 84.6 | 77.8 | 65.1 | 49.4 | 36.7 | 86.9 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1992 | 1988 | 1988 | 1971 | 1975 | 1988 | 1999 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 14.7 | 23.4 | 36.3 | 38.0 | 55.0 | 60.9 | 67.3 | 71.4 | 59.4 | 48.4 | 28.5 | 16.4 | 14.7 |
| Year Lowest Occurred | 1979 | 1989 | 1977 | 1975 | 1975 | 1998 | 1993 | 1983 | 1985 | 1984 | 1985 | 1990 | 1979 |
| Mean Temperature (F) | 13.2 | 18.2 | 26.5 | 34.9 | 44.2 | 52.1 | 58.0 | 57.4 | 48.2 | 37.8 | 23.3 | 13.5 | 35.6 |
| Highest Mean Temperature (F) | 20.5 | 25.3 | 33.3 | 40.1 | 48.5 | 58.0 | 62.0 | 61.7 | 54.4 | 44.6 | 30.1 | 23.2 | 62.0 |
| Year Highest Occurred | 1994 | 1991 | 1992 | 1992 | 1992 | 1988 | 1998 | 1971 | 1990 | 1988 | 1999 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 0.5 | 8.5 | 20.0 | 26.5 | 40.8 | 47.1 | 51.3 | 53.2 | 42.7 | 33.2 | 15.8 | 2.3 | 0.5 |
| Year Lowest Occurred | 1979 | 1989 | 1976 | 1975 | 1975 | 1998 | 1993 | 1977 | 1999 | 1984 | 2000 | 1990 | 1979 |
| Mean Min. Temperature (F) | -0.6 | 2.6 | 11.2 | 19.6 | 27.9 | 34.0 | 37.3 | 35.7 | 27.7 | 20.0 | 9.5 | -0.1 | 18.7 |
| Highest Mean Min. Temperature (F) | 7.0 | 10.5 | 18.6 | 23.6 | 31.6 | 41.2 | 43.3 | 42.5 | 33.6 | 24.9 | 17.4 | 9.6 | 43.3 |
| Year Highest Occurred | 1994 | 1986 | 1986 | 1978 | 1987 | 1997 | 1997 | 1983 | 1997 | 1997 | 1998 | 1980 | 1997 |
| Lowest Mean Min. Temperature (F) | -13.8 | -9.4 | 3.6 | 13.5 | 24.5 | 30.3 | 30.9 | 29.6 | 19.8 | 12.7 | 0.7 | -11.9 | -13.8 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1997 | 2000 | 1999 | 1999 | 2000 | 1999 | 1976 | 2000 | 1990 | 1979 |
| Mean Precipitation (in.) | 1.21 | 0.83 | 1.10 | 1.01 | 1.87 | 1.98 | 1.90 | 1.53 | 1.44 | 1.10 | 1.17 | 1.19 | 16.33 |
| Highest Precipitation (in.) | 2.50 | 1.80 | 3.07 | 2.27 | 3.83 | 5.78 | 4.30 | 3.46 | 3.29 | 2.64 | 2.36 | 3.05 | 5.78 |
| Year Highest Occurred | 1997 | 1978 | 1974 | 1993 | 1991 | 1992 | 1987 | 1999 | 1972 | 1975 | 1998 | 1996 | 1992 |
| Lowest Precipitation (in.) | 0.14 | 0.19 | 0.37 | 0.25 | 0.62 | 0.61 | 0.20 | 0.22 | 0.19 | 0.00 | 0.22 | 0.06 | 0.00 |
| Year Lowest Occurred | 1992 | 1977 | 1973 | 1977 | 1986 | 1991 | 2000 | 1988 | 1987 | 1987 | 2000 | 1973 | 1987 |
| Heating Degree Days (F) | 1608. | 1310. | 1194. | 904. | 645. | 390. | 232. | 244. | 505. | 843. | 1253. | 1598. | 10726. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 1. | 15. | 7. | 0. | 0. | 0. | 0. | 23. |