| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 38.5 | 43.8 | 50.3 | 59.0 | 67.9 | 78.2 | 82.6 | 80.2 | 73.4 | 63.2 | 48.6 | 40.0 | 60.5 |
| Highest Mean Max. Temperature (F) | 48.1 | 50.0 | 58.2 | 68.1 | 74.1 | 84.2 | 87.1 | 83.6 | 79.3 | 71.1 | 58.2 | 47.5 | 87.1 |
| Year Highest Occurred | 1986 | 1991 | 1972 | 1989 | 1984 | 1990 | 1989 | 1985 | 1983 | 1988 | 1999 | 1980 | 1989 |
| Lowest Mean Max. Temperature (F) | 29.0 | 37.9 | 43.0 | 52.4 | 62.2 | 73.0 | 78.7 | 76.3 | 68.5 | 52.4 | 39.8 | 33.2 | 29.0 |
| Year Lowest Occurred | 1979 | 1998 | 1980 | 1975 | 1995 | 1995 | 1997 | 1999 | 1986 | 1984 | 1972 | 1978 | 1979 |
| Mean Temperature (F) | 21.0 | 27.0 | 34.5 | 41.8 | 49.6 | 57.9 | 64.0 | 62.7 | 55.3 | 45.1 | 32.6 | 23.3 | 42.9 |
| Highest Mean Temperature (F) | 29.3 | 33.6 | 40.3 | 47.0 | 53.6 | 61.5 | 67.5 | 66.2 | 60.5 | 49.5 | 37.8 | 31.1 | 67.5 |
| Year Highest Occurred | 1981 | 1995 | 1986 | 1992 | 1984 | 1994 | 1998 | 1983 | 1998 | 1987 | 1999 | 1980 | 1998 |
| Lowest Mean Temperature (F) | 15.3 | 20.2 | 29.5 | 36.3 | 46.1 | 53.8 | 60.2 | 59.1 | 51.4 | 40.2 | 26.5 | 16.3 | 15.3 |
| Year Lowest Occurred | 1988 | 1974 | 1980 | 1975 | 1975 | 1975 | 1995 | 1974 | 1973 | 1984 | 1979 | 1990 | 1988 |
| Mean Min. Temperature (F) | 3.5 | 10.2 | 18.7 | 24.6 | 31.3 | 37.5 | 45.3 | 45.1 | 37.2 | 26.9 | 16.5 | 6.6 | 25.3 |
| Highest Mean Min. Temperature (F) | 15.0 | 18.0 | 23.4 | 29.7 | 35.9 | 41.7 | 51.6 | 50.1 | 42.4 | 35.6 | 22.3 | 14.6 | 51.6 |
| Year Highest Occurred | 1980 | 1986 | 1983 | 1990 | 1992 | 1988 | 1998 | 1982 | 1982 | 1972 | 1982 | 1980 | 1998 |
| Lowest Mean Min. Temperature (F) | -6.2 | -1.1 | 13.5 | 19.9 | 28.1 | 32.5 | 40.6 | 40.3 | 32.6 | 20.6 | 11.5 | -3.4 | -6.2 |
| Year Lowest Occurred | 1984 | 1974 | 1997 | 1974 | 1975 | 1975 | 1993 | 1974 | 1973 | 1995 | 1979 | 1990 | 1984 |
| Mean Precipitation (in.) | 1.85 | 1.41 | 1.74 | 1.31 | 1.38 | 0.86 | 1.81 | 2.73 | 2.06 | 2.19 | 1.84 | 1.46 | 20.64 |
| Highest Precipitation (in.) | 5.34 | 3.99 | 4.69 | 3.75 | 4.25 | 2.49 | 3.81 | 5.36 | 4.88 | 7.80 | 6.84 | 4.25 | 7.80 |
| Year Highest Occurred | 1979 | 1980 | 1995 | 1990 | 1992 | 1995 | 1977 | 1993 | 1985 | 1972 | 1978 | 1978 | 1972 |
| Lowest Precipitation (in.) | 0.05 | 0.04 | 0.02 | 0.00 | 0.03 | 0.00 | 0.05 | 0.29 | 0.21 | 0.00 | 0.00 | 0.04 | 0.00 |
| Year Lowest Occurred | 1986 | 1991 | 1997 | 1989 | 1974 | 1980 | 1993 | 1978 | 1979 | 1995 | 1989 | 1989 | 1989 |
| Heating Degree Days (F) | 1363. | 1065. | 946. | 696. | 477. | 222. | 78. | 106. | 296. | 619. | 974. | 1294. | 8136. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 8. | 46. | 33. | 4. | 0. | 0. | 0. | 91. |