| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 18.5 | 25.1 | 36.8 | 53.5 | 68.2 | 76.4 | 82.8 | 81.8 | 71.1 | 57.7 | 36.5 | 23.6 | 52.7 |
| Highest Mean Max. Temperature (F) | 34.1 | 36.2 | 47.8 | 64.9 | 77.3 | 88.7 | 89.6 | 90.1 | 78.3 | 62.7 | 50.9 | 35.9 | 90.1 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1988 | 1983 | 1978 | 1974 | 1999 | 1999 | 1983 |
| Lowest Mean Max. Temperature (F) | 5.1 | 10.1 | 26.5 | 38.3 | 60.4 | 69.0 | 72.3 | 75.8 | 64.2 | 53.9 | 24.6 | 7.2 | 5.1 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1975 | 1979 | 1993 | 1992 | 1977 | 1985 | 1995 | 1996 | 1983 | 1982 |
| Mean Temperature (F) | 8.9 | 15.7 | 27.4 | 42.0 | 55.7 | 64.3 | 69.8 | 68.3 | 57.7 | 45.2 | 27.2 | 14.2 | 41.4 |
| Highest Mean Temperature (F) | 24.2 | 27.8 | 35.2 | 49.9 | 64.1 | 73.7 | 74.2 | 74.8 | 63.4 | 49.6 | 38.4 | 25.1 | 74.8 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1977 | 1988 | 1988 | 1983 | 1978 | 1973 | 1999 | 1999 | 1983 |
| Lowest Mean Temperature (F) | -5.6 | -0.1 | 17.5 | 32.5 | 48.9 | 58.8 | 61.5 | 62.6 | 52.2 | 41.3 | 15.8 | -1.3 | -5.6 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1975 | 1979 | 1982 | 1992 | 1977 | 1993 | 1976 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -0.7 | 6.2 | 17.9 | 30.5 | 43.2 | 52.1 | 56.8 | 54.8 | 44.3 | 32.6 | 17.8 | 4.8 | 30.0 |
| Highest Mean Min. Temperature (F) | 14.2 | 21.4 | 26.9 | 36.3 | 50.9 | 58.6 | 61.1 | 59.4 | 49.2 | 37.9 | 25.9 | 18.7 | 61.1 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1998 | 1977 | 1988 | 1975 | 1983 | 1998 | 1973 | 1999 | 1997 | 1975 |
| Lowest Mean Min. Temperature (F) | -16.3 | -10.3 | 8.4 | 25.9 | 37.4 | 45.4 | 50.7 | 49.3 | 39.1 | 27.3 | 6.4 | -9.8 | -16.3 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1979 | 1979 | 1982 | 1992 | 1977 | 1974 | 1976 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.61 | 0.41 | 1.16 | 1.63 | 2.90 | 3.26 | 2.18 | 2.87 | 1.80 | 1.45 | 0.67 | 0.38 | 19.32 |
| Highest Precipitation (in.) | 1.66 | 0.92 | 2.74 | 4.92 | 6.55 | 7.22 | 6.41 | 6.21 | 7.02 | 5.45 | 2.50 | 1.05 | 7.22 |
| Year Highest Occurred | 1997 | 1999 | 1977 | 1986 | 1999 | 1975 | 1994 | 1998 | 1973 | 1998 | 2000 | 1972 | 1975 |
| Lowest Precipitation (in.) | 0.05 | 0.08 | 0.11 | 0.00 | 0.40 | 0.93 | 0.28 | 0.72 | 0.21 | 0.10 | 0.00 | 0.04 | 0.00 |
| Year Lowest Occurred | 1990 | 1988 | 1971 | 1988 | 1976 | 1973 | 1976 | 1996 | 1974 | 1987 | 1999 | 1986 | 1988 |
| Heating Degree Days (F) | 1741. | 1382. | 1167. | 690. | 311. | 107. | 39. | 56. | 243. | 615. | 1135. | 1574. | 9060. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 23. | 85. | 187. | 159. | 24. | 0. | 0. | 0. | 479. |