| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 30.8 | 36.2 | 44.5 | 56.9 | 67.1 | 76.1 | 85.3 | 84.9 | 75.6 | 63.4 | 43.3 | 31.5 | 58.0 |
| Highest Mean Max. Temperature (F) | 37.6 | 45.7 | 59.3 | 69.2 | 76.9 | 83.8 | 92.4 | 90.2 | 82.8 | 75.7 | 56.2 | 43.2 | 92.4 |
| Year Highest Occurred | 1981 | 1992 | 1992 | 1987 | 1992 | 1988 | 1989 | 1981 | 1990 | 1988 | 1976 | 1976 | 1989 |
| Lowest Mean Max. Temperature (F) | 24.0 | 28.8 | 37.2 | 44.6 | 61.3 | 67.6 | 74.9 | 77.5 | 66.1 | 58.0 | 32.9 | 20.8 | 20.8 |
| Year Lowest Occurred | 1979 | 1985 | 1976 | 1975 | 1996 | 1998 | 1993 | 1976 | 1985 | 1971 | 1994 | 1985 | 1985 |
| Mean Temperature (F) | 18.4 | 22.6 | 31.6 | 42.7 | 51.5 | 59.0 | 66.4 | 65.2 | 56.1 | 45.5 | 30.7 | 19.4 | 42.4 |
| Highest Mean Temperature (F) | 24.4 | 33.5 | 42.1 | 50.8 | 57.1 | 64.7 | 71.4 | 70.0 | 61.2 | 54.8 | 38.2 | 25.6 | 71.4 |
| Year Highest Occurred | 1998 | 1992 | 1992 | 1987 | 1992 | 1988 | 1989 | 1971 | 1990 | 1988 | 1999 | 1981 | 1989 |
| Lowest Mean Temperature (F) | 10.8 | 12.4 | 21.4 | 33.2 | 47.3 | 54.2 | 57.2 | 60.2 | 48.4 | 41.6 | 21.9 | 9.7 | 9.7 |
| Year Lowest Occurred | 1984 | 1989 | 1976 | 1975 | 1977 | 1998 | 1993 | 1993 | 1985 | 1982 | 1994 | 1985 | 1985 |
| Mean Min. Temperature (F) | 5.9 | 9.0 | 18.6 | 28.5 | 35.9 | 41.9 | 47.4 | 45.5 | 36.5 | 27.5 | 18.0 | 7.2 | 26.8 |
| Highest Mean Min. Temperature (F) | 13.6 | 21.3 | 27.6 | 33.0 | 40.6 | 48.2 | 52.6 | 51.2 | 42.5 | 33.8 | 24.5 | 16.3 | 52.6 |
| Year Highest Occurred | 1983 | 1992 | 1986 | 1990 | 1987 | 1977 | 1975 | 1991 | 1991 | 1988 | 1995 | 1975 | 1975 |
| Lowest Mean Min. Temperature (F) | -6.1 | -4.5 | 5.6 | 21.8 | 31.8 | 37.9 | 39.5 | 38.0 | 30.7 | 21.8 | 8.2 | -3.7 | -6.1 |
| Year Lowest Occurred | 1989 | 1989 | 1976 | 1975 | 1999 | 1976 | 1993 | 1985 | 1985 | 1976 | 1993 | 1990 | 1989 |
| Mean Precipitation (in.) | 2.22 | 1.71 | 1.45 | 1.05 | 1.33 | 0.83 | 0.60 | 0.42 | 0.69 | 0.82 | 1.77 | 1.98 | 14.87 |
| Highest Precipitation (in.) | 4.58 | 5.24 | 3.61 | 2.15 | 4.53 | 2.48 | 2.80 | 2.24 | 3.04 | 2.37 | 5.83 | 4.65 | 5.83 |
| Year Highest Occurred | 1971 | 1986 | 1983 | 1983 | 1998 | 1993 | 1982 | 1983 | 1985 | 1982 | 1988 | 1983 | 1988 |
| Lowest Precipitation (in.) | 0.32 | 0.16 | 0.00 | 0.00 | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.03 | 0.00 |
| Year Lowest Occurred | 1992 | 1996 | 1994 | 1998 | 2000 | 1974 | 2000 | 1999 | 1999 | 1999 | 1976 | 1976 | 1994 |
| Heating Degree Days (F) | 1446. | 1188. | 1038. | 670. | 419. | 209. | 72. | 90. | 286. | 607. | 1030. | 1416. | 8471. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 1. | 29. | 113. | 96. | 16. | 0. | 0. | 0. | 255. |