| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.4 | 35.7 | 44.1 | 55.8 | 65.3 | 74.9 | 83.8 | 82.5 | 73.1 | 60.1 | 41.4 | 30.7 | 56.5 |
| Highest Mean Max. Temperature (F) | 39.1 | 46.1 | 54.9 | 68.3 | 74.5 | 82.9 | 89.2 | 88.1 | 79.3 | 69.7 | 49.5 | 39.3 | 89.2 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1992 | 1988 | 1988 | 1981 | 1987 | 1988 | 1995 | 1980 | 1988 |
| Lowest Mean Max. Temperature (F) | 19.8 | 27.9 | 36.5 | 44.5 | 57.9 | 67.1 | 73.7 | 77.1 | 64.1 | 54.4 | 32.9 | 22.1 | 19.8 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1978 | 1993 | 1993 | 1993 | 1986 | 1982 | 1994 | 1990 | 1979 |
| Mean Temperature (F) | 18.4 | 23.1 | 31.9 | 41.7 | 50.4 | 58.5 | 65.6 | 64.1 | 55.4 | 44.5 | 29.7 | 19.1 | 41.9 |
| Highest Mean Temperature (F) | 26.0 | 33.0 | 41.3 | 48.2 | 57.0 | 64.6 | 68.9 | 67.7 | 60.7 | 53.0 | 35.9 | 25.2 | 68.9 |
| Year Highest Occurred | 1981 | 1991 | 1992 | 1987 | 1992 | 1974 | 1985 | 1971 | 1990 | 1988 | 1995 | 1980 | 1985 |
| Lowest Mean Temperature (F) | 8.4 | 12.7 | 24.8 | 34.0 | 45.7 | 53.2 | 57.0 | 59.1 | 49.5 | 38.9 | 21.0 | 10.2 | 8.4 |
| Year Lowest Occurred | 1979 | 1985 | 1985 | 1975 | 1978 | 1998 | 1993 | 1993 | 1986 | 1984 | 1994 | 1990 | 1979 |
| Mean Min. Temperature (F) | 6.4 | 10.4 | 19.6 | 27.6 | 35.4 | 42.1 | 47.3 | 45.6 | 37.7 | 28.9 | 18.0 | 7.5 | 27.2 |
| Highest Mean Min. Temperature (F) | 12.8 | 21.1 | 27.6 | 33.0 | 40.1 | 48.9 | 50.6 | 49.4 | 42.3 | 36.3 | 24.7 | 14.5 | 50.6 |
| Year Highest Occurred | 1990 | 1992 | 1992 | 1992 | 1980 | 1977 | 1991 | 1971 | 1990 | 1988 | 1981 | 1975 | 1991 |
| Lowest Mean Min. Temperature (F) | -3.0 | -2.8 | 11.4 | 22.6 | 32.6 | 37.7 | 40.2 | 38.9 | 32.9 | 23.0 | 9.1 | -6.3 | -6.3 |
| Year Lowest Occurred | 1979 | 1985 | 1980 | 1982 | 1975 | 1980 | 1993 | 1980 | 1971 | 1984 | 1994 | 1984 | 1984 |
| Mean Precipitation (in.) | 0.65 | 0.55 | 0.80 | 0.66 | 1.24 | 1.30 | 1.06 | 0.89 | 0.71 | 0.58 | 0.66 | 0.67 | 9.77 |
| Highest Precipitation (in.) | 1.52 | 2.35 | 2.84 | 2.04 | 3.17 | 3.53 | 3.54 | 2.52 | 2.65 | 2.11 | 2.25 | 2.29 | 3.54 |
| Year Highest Occurred | 1995 | 1999 | 1982 | 1978 | 1995 | 1993 | 1987 | 1983 | 1980 | 2000 | 1973 | 1996 | 1987 |
| Lowest Precipitation (in.) | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.00 |
| Year Lowest Occurred | 1985 | 1988 | 1978 | 1977 | 1974 | 1974 | 1988 | 1985 | 1987 | 1978 | 1999 | 1979 | 1988 |
| Heating Degree Days (F) | 1444. | 1175. | 1027. | 699. | 455. | 223. | 81. | 93. | 296. | 635. | 1059. | 1424. | 8611. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 27. | 99. | 64. | 8. | 0. | 0. | 0. | 199. |