| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 36.9 | 38.5 | 46.0 | 56.0 | 67.3 | 77.1 | 83.1 | 81.9 | 74.3 | 63.3 | 52.2 | 41.9 | 59.9 |
| Highest Mean Max. Temperature (F) | 43.4 | 46.1 | 51.2 | 62.4 | 75.5 | 81.0 | 87.4 | 85.4 | 79.3 | 68.1 | 60.0 | 49.5 | 87.4 |
| Year Highest Occurred | 1990 | 1976 | 2000 | 1976 | 1991 | 1991 | 1999 | 1973 | 1983 | 1971 | 1975 | 1990 | 1999 |
| Lowest Mean Max. Temperature (F) | 28.6 | 27.6 | 39.0 | 52.2 | 61.8 | 71.4 | 79.5 | 78.1 | 71.9 | 58.5 | 46.7 | 28.3 | 27.6 |
| Year Lowest Occurred | 1981 | 1979 | 1984 | 1992 | 1997 | 1982 | 2000 | 1982 | 1986 | 1988 | 1972 | 1989 | 1979 |
| Mean Temperature (F) | 28.5 | 30.1 | 37.5 | 47.1 | 57.9 | 67.6 | 74.2 | 73.3 | 65.8 | 54.7 | 44.4 | 33.8 | 51.2 |
| Highest Mean Temperature (F) | 36.5 | 36.8 | 42.7 | 51.1 | 63.5 | 71.4 | 78.2 | 76.0 | 69.3 | 59.4 | 49.8 | 40.1 | 78.2 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1976 | 1991 | 1999 | 1999 | 1988 | 1999 | 1971 | 1975 | 1990 | 1999 |
| Lowest Mean Temperature (F) | 18.8 | 20.1 | 31.5 | 42.4 | 54.6 | 63.2 | 71.7 | 69.5 | 62.4 | 50.4 | 39.4 | 20.2 | 18.8 |
| Year Lowest Occurred | 1981 | 1979 | 1984 | 1972 | 1997 | 1982 | 2000 | 1982 | 1978 | 1988 | 1976 | 1989 | 1981 |
| Mean Min. Temperature (F) | 20.0 | 21.6 | 28.9 | 38.1 | 48.4 | 58.1 | 65.2 | 64.6 | 57.2 | 46.0 | 36.6 | 25.7 | 42.5 |
| Highest Mean Min. Temperature (F) | 29.5 | 29.9 | 34.2 | 42.4 | 52.5 | 62.1 | 70.6 | 68.0 | 61.3 | 50.8 | 43.5 | 32.4 | 70.6 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1986 | 1979 | 1999 | 1994 | 1988 | 1999 | 1971 | 1985 | 1996 | 1994 |
| Lowest Mean Min. Temperature (F) | 9.0 | 12.5 | 24.0 | 31.9 | 45.6 | 54.6 | 62.5 | 60.9 | 52.5 | 40.4 | 31.4 | 12.2 | 9.0 |
| Year Lowest Occurred | 1981 | 1979 | 1984 | 1972 | 1972 | 1980 | 1978 | 1982 | 1978 | 1972 | 1976 | 1989 | 1981 |
| Mean Precipitation (in.) | 4.69 | 4.01 | 4.68 | 4.37 | 3.69 | 3.95 | 3.54 | 4.55 | 3.89 | 3.97 | 4.66 | 4.77 | 50.77 |
| Highest Precipitation (in.) | 11.29 | 8.57 | 7.51 | 9.60 | 6.01 | 10.15 | 8.12 | 14.72 | 8.74 | 7.39 | 8.95 | 10.44 | 14.72 |
| Year Highest Occurred | 1978 | 1998 | 1980 | 1983 | 1989 | 1998 | 1990 | 1985 | 1996 | 1996 | 1988 | 1973 | 1985 |
| Lowest Precipitation (in.) | 1.40 | 1.38 | 1.12 | 1.23 | 1.25 | 0.71 | 1.13 | 0.92 | 0.78 | 0.85 | 1.39 | 1.26 | 0.71 |
| Year Lowest Occurred | 1985 | 1987 | 1981 | 1976 | 1993 | 1999 | 1987 | 1984 | 1980 | 1994 | 1976 | 1988 | 1999 |
| Heating Degree Days (F) | 1135. | 979. | 854. | 538. | 233. | 33. | 0. | 1. | 52. | 325. | 617. | 967. | 5734. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 11. | 111. | 284. | 256. | 74. | 4. | 0. | 0. | 740. |