| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 31.2 | 38.9 | 54.4 | 65.5 | 76.2 | 88.0 | 94.4 | 92.3 | 81.9 | 67.3 | 48.3 | 35.2 | 64.5 |
| Highest Mean Max. Temperature (F) | 46.7 | 52.8 | 64.5 | 74.5 | 83.4 | 95.3 | 99.3 | 95.7 | 88.1 | 75.5 | 58.5 | 47.7 | 99.3 |
| Year Highest Occurred | 1981 | 1995 | 1972 | 1992 | 1994 | 1977 | 1989 | 1994 | 1979 | 1988 | 1995 | 1980 | 1989 |
| Lowest Mean Max. Temperature (F) | 14.1 | 22.6 | 43.7 | 57.1 | 68.6 | 82.2 | 89.3 | 89.3 | 75.0 | 59.5 | 37.8 | 25.0 | 14.1 |
| Year Lowest Occurred | 1984 | 1985 | 1984 | 1983 | 1995 | 1998 | 1992 | 1987 | 1986 | 1984 | 1971 | 1972 | 1984 |
| Mean Temperature (F) | 17.5 | 24.3 | 38.8 | 48.5 | 58.3 | 67.6 | 73.9 | 71.7 | 61.9 | 49.1 | 34.4 | 22.1 | 47.3 |
| Highest Mean Temperature (F) | 30.9 | 36.8 | 44.9 | 55.0 | 64.2 | 73.0 | 78.5 | 74.5 | 67.6 | 54.0 | 40.1 | 32.1 | 78.5 |
| Year Highest Occurred | 1998 | 1995 | 1986 | 1992 | 2000 | 1977 | 1998 | 1998 | 1990 | 1988 | 1999 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 1.9 | 8.9 | 31.3 | 42.8 | 53.4 | 62.4 | 69.8 | 68.8 | 57.6 | 44.2 | 26.5 | 10.3 | 1.9 |
| Year Lowest Occurred | 1973 | 1985 | 1984 | 1983 | 1983 | 1975 | 1993 | 1975 | 1971 | 1971 | 1971 | 1978 | 1973 |
| Mean Min. Temperature (F) | 3.7 | 9.6 | 23.2 | 31.5 | 40.3 | 47.1 | 53.4 | 51.1 | 41.8 | 30.8 | 20.4 | 8.9 | 30.2 |
| Highest Mean Min. Temperature (F) | 18.6 | 25.5 | 28.7 | 35.8 | 45.5 | 51.7 | 60.4 | 55.9 | 49.8 | 35.7 | 25.4 | 18.4 | 60.4 |
| Year Highest Occurred | 1998 | 1998 | 1986 | 1990 | 2000 | 1972 | 1998 | 1998 | 1997 | 1972 | 1998 | 1996 | 1998 |
| Lowest Mean Min. Temperature (F) | -13.1 | -8.2 | 17.6 | 24.9 | 36.8 | 41.4 | 48.2 | 45.3 | 36.7 | 23.9 | 13.6 | -4.8 | -13.1 |
| Year Lowest Occurred | 1979 | 1974 | 1977 | 1982 | 1975 | 1976 | 1993 | 1975 | 1971 | 1999 | 1976 | 1978 | 1979 |
| Mean Precipitation (in.) | 0.61 | 0.67 | 0.74 | 0.85 | 1.06 | 0.53 | 0.68 | 0.68 | 0.95 | 1.20 | 0.61 | 0.51 | 9.09 |
| Highest Precipitation (in.) | 1.62 | 2.20 | 2.21 | 2.25 | 3.28 | 1.60 | 2.44 | 2.08 | 3.73 | 4.26 | 1.61 | 1.69 | 4.26 |
| Year Highest Occurred | 1980 | 1983 | 1979 | 1999 | 1971 | 1998 | 1998 | 1997 | 1997 | 1994 | 1983 | 1984 | 1994 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.01 | 0.01 | 0.00 | 0.05 | 0.01 | 0.00 | 0.04 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 2000 | 1972 | 1999 | 1998 | 1974 | 1979 | 1979 | 1996 | 1979 | 1988 | 2000 | 1993 | 2000 |
| Heating Degree Days (F) | 1473. | 1140. | 812. | 496. | 232. | 58. | 4. | 6. | 144. | 494. | 920. | 1332. | 7111. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 22. | 136. | 280. | 213. | 49. | 1. | 0. | 0. | 702. |