| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 27.8 | 32.3 | 42.9 | 53.7 | 63.4 | 73.1 | 80.9 | 79.8 | 70.9 | 58.8 | 40.9 | 29.6 | 54.5 |
| Highest Mean Max. Temperature (F) | 36.8 | 42.8 | 52.7 | 62.8 | 69.3 | 81.9 | 86.7 | 84.8 | 79.6 | 67.1 | 53.9 | 38.4 | 86.7 |
| Year Highest Occurred | 1999 | 1977 | 1986 | 1987 | 1992 | 1988 | 1988 | 1994 | 1979 | 1988 | 1999 | 1976 | 1988 |
| Lowest Mean Max. Temperature (F) | 16.4 | 20.4 | 32.6 | 43.6 | 56.4 | 65.2 | 74.0 | 74.8 | 64.5 | 52.0 | 32.7 | 18.5 | 16.4 |
| Year Lowest Occurred | 1979 | 1993 | 1998 | 1975 | 1995 | 1998 | 1993 | 1993 | 1986 | 1984 | 1994 | 1985 | 1979 |
| Mean Temperature (F) | 15.1 | 18.7 | 29.8 | 38.5 | 47.3 | 55.7 | 62.1 | 60.4 | 51.6 | 40.7 | 27.2 | 16.8 | 38.7 |
| Highest Mean Temperature (F) | 24.9 | 29.1 | 37.2 | 44.1 | 51.5 | 61.4 | 66.1 | 64.4 | 56.8 | 45.6 | 34.4 | 25.7 | 66.1 |
| Year Highest Occurred | 1999 | 2000 | 1986 | 1987 | 1992 | 1988 | 1988 | 2000 | 1990 | 1988 | 1995 | 1977 | 1988 |
| Lowest Mean Temperature (F) | 3.2 | 7.2 | 20.2 | 31.2 | 41.8 | 51.1 | 55.3 | 55.8 | 47.3 | 36.4 | 20.6 | 6.3 | 3.2 |
| Year Lowest Occurred | 1979 | 1993 | 1998 | 1975 | 1975 | 1975 | 1993 | 1975 | 1971 | 1984 | 1994 | 1985 | 1979 |
| Mean Min. Temperature (F) | 2.3 | 5.1 | 16.6 | 23.2 | 31.2 | 38.2 | 43.2 | 41.0 | 32.2 | 22.6 | 13.4 | 3.9 | 22.7 |
| Highest Mean Min. Temperature (F) | 13.7 | 17.7 | 21.9 | 26.2 | 34.8 | 41.6 | 46.9 | 48.1 | 40.4 | 26.1 | 19.7 | 14.8 | 48.1 |
| Year Highest Occurred | 2000 | 2000 | 1990 | 1978 | 1980 | 1997 | 1998 | 1983 | 1997 | 1998 | 1995 | 1977 | 1983 |
| Lowest Mean Min. Temperature (F) | -10.0 | -7.3 | 6.1 | 18.8 | 25.0 | 34.7 | 36.5 | 36.4 | 26.7 | 17.0 | 3.6 | -6.5 | -10.0 |
| Year Lowest Occurred | 1979 | 1973 | 1985 | 1975 | 1975 | 1976 | 1993 | 1975 | 1975 | 1976 | 1993 | 1990 | 1979 |
| Mean Precipitation (in.) | 0.54 | 0.50 | 0.63 | 0.94 | 1.19 | 0.99 | 0.79 | 0.83 | 1.24 | 1.06 | 0.67 | 0.45 | 9.83 |
| Highest Precipitation (in.) | 1.94 | 1.36 | 1.59 | 2.42 | 2.23 | 5.05 | 2.71 | 2.73 | 4.39 | 2.58 | 1.58 | 1.42 | 5.05 |
| Year Highest Occurred | 1980 | 1998 | 1995 | 1999 | 1993 | 1998 | 1973 | 1997 | 1982 | 1994 | 1983 | 1983 | 1998 |
| Lowest Precipitation (in.) | 0.03 | 0.08 | 0.01 | 0.00 | 0.10 | 0.02 | 0.03 | 0.00 | 0.03 | 0.00 | 0.03 | 0.00 | 0.00 |
| Year Lowest Occurred | 1984 | 1988 | 1992 | 1977 | 1972 | 2000 | 1988 | 1985 | 1975 | 1988 | 1976 | 1976 | 1977 |
| Heating Degree Days (F) | 1549. | 1296. | 1094. | 797. | 549. | 286. | 121. | 165. | 406. | 753. | 1136. | 1497. | 9649. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 6. | 30. | 22. | 2. | 0. | 0. | 0. | 60. |