| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 45.1 | 50.6 | 58.6 | 68.1 | 77.8 | 88.9 | 93.4 | 90.9 | 82.3 | 71.6 | 56.3 | 46.9 | 69.2 |
| Highest Mean Max. Temperature (F) | 58.5 | 61.2 | 68.5 | 74.5 | 86.5 | 95.0 | 101.4 | 98.7 | 89.9 | 78.2 | 66.4 | 53.0 | 101.4 |
| Year Highest Occurred | 1986 | 2000 | 1972 | 1981 | 1974 | 1994 | 1980 | 1983 | 1998 | 1979 | 1999 | 1979 | 1980 |
| Lowest Mean Max. Temperature (F) | 31.1 | 33.5 | 50.3 | 59.3 | 70.2 | 80.6 | 88.8 | 84.7 | 76.0 | 64.9 | 46.4 | 30.5 | 30.5 |
| Year Lowest Occurred | 1979 | 1978 | 1998 | 1997 | 1995 | 1989 | 1996 | 1992 | 1974 | 1984 | 1972 | 1983 | 1983 |
| Mean Temperature (F) | 31.7 | 36.4 | 44.3 | 53.5 | 63.4 | 73.9 | 78.8 | 76.8 | 68.2 | 56.4 | 42.6 | 33.8 | 55.0 |
| Highest Mean Temperature (F) | 40.7 | 45.4 | 50.5 | 60.1 | 68.9 | 79.2 | 84.6 | 81.6 | 75.1 | 59.5 | 50.9 | 39.6 | 84.6 |
| Year Highest Occurred | 1986 | 2000 | 1986 | 1981 | 1974 | 1977 | 1980 | 1983 | 1998 | 1998 | 1999 | 1994 | 1980 |
| Lowest Mean Temperature (F) | 19.4 | 22.4 | 38.4 | 46.7 | 58.0 | 68.1 | 75.9 | 72.1 | 63.0 | 50.9 | 35.2 | 20.7 | 19.4 |
| Year Lowest Occurred | 1979 | 1978 | 1998 | 1997 | 1995 | 1989 | 1972 | 1992 | 1974 | 1976 | 1972 | 1983 | 1979 |
| Mean Min. Temperature (F) | 18.3 | 22.2 | 29.9 | 38.9 | 49.0 | 58.9 | 64.2 | 62.7 | 54.0 | 41.1 | 28.9 | 20.6 | 40.7 |
| Highest Mean Min. Temperature (F) | 24.8 | 29.6 | 34.6 | 45.6 | 54.3 | 63.9 | 67.7 | 65.5 | 60.3 | 45.6 | 35.4 | 26.9 | 67.7 |
| Year Highest Occurred | 1992 | 2000 | 1986 | 1981 | 1977 | 1977 | 1980 | 1995 | 1998 | 1998 | 1999 | 1994 | 1980 |
| Lowest Mean Min. Temperature (F) | 7.6 | 11.3 | 24.4 | 34.1 | 44.0 | 54.9 | 62.0 | 58.2 | 50.0 | 36.1 | 24.0 | 10.9 | 7.6 |
| Year Lowest Occurred | 1979 | 1978 | 1996 | 1997 | 1983 | 1983 | 1972 | 1979 | 1974 | 1976 | 1972 | 1983 | 1979 |
| Mean Precipitation (in.) | 0.54 | 0.44 | 1.38 | 1.67 | 2.75 | 2.50 | 2.82 | 2.74 | 1.69 | 1.11 | 0.78 | 0.48 | 18.90 |
| Highest Precipitation (in.) | 1.94 | 1.81 | 4.61 | 5.45 | 8.36 | 5.96 | 7.89 | 7.74 | 4.61 | 5.19 | 3.72 | 1.42 | 8.36 |
| Year Highest Occurred | 1980 | 1983 | 2000 | 1980 | 1979 | 2000 | 1998 | 1996 | 1987 | 2000 | 1972 | 1997 | 1979 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.00 | 0.09 | 0.53 | 0.34 | 0.28 | 0.39 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1998 | 1994 | 1997 | 1996 | 1998 | 1973 | 1999 | 1984 | 1980 | 1987 | 1995 | 1976 | 1998 |
| Heating Degree Days (F) | 1033. | 801. | 645. | 356. | 128. | 12. | 0. | 2. | 46. | 276. | 673. | 969. | 4941. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 11. | 78. | 279. | 428. | 367. | 141. | 6. | 0. | 0. | 1310. |