| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 43.4 | 47.7 | 51.4 | 58.5 | 67.5 | 76.0 | 84.4 | 83.3 | 76.2 | 65.0 | 49.8 | 43.3 | 62.2 |
| Highest Mean Max. Temperature (F) | 51.4 | 56.2 | 58.9 | 68.7 | 74.7 | 81.5 | 88.7 | 91.1 | 84.1 | 73.7 | 58.1 | 50.7 | 64.4 |
| Year Highest Occurred | 1961 | 1988 | 1988 | 1987 | 1973 | 1961 | 1973 | 1967 | 1974 | 1965 | 1976 | 1989 | 1987 |
| Lowest Mean Max. Temperature (F) | 38.2 | 38.7 | 44.5 | 45.1 | 58.1 | 68.2 | 77.8 | 74.8 | 66.0 | 56.2 | 41.6 | 36.3 | 59.8 |
| Year Lowest Occurred | 1969 | 1969 | 1975 | 1967 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1973 | 1971 | 1982 |
| Mean Temperature (F) | 34.5 | 38.1 | 40.7 | 45.9 | 53.5 | 61.2 | 67.2 | 66.1 | 59.9 | 51.0 | 40.1 | 34.6 | 49.4 |
| Highest Mean Temperature (F) | 40.4 | 44.3 | 46.2 | 52.5 | 58.5 | 66.0 | 71.1 | 71.5 | 65.2 | 56.8 | 45.4 | 39.6 | 50.9 |
| Year Highest Occurred | 1986 | 1963 | 1986 | 1987 | 1973 | 1977 | 1973 | 1967 | 1974 | 1987 | 1967 | 1962 | 1981 |
| Lowest Mean Temperature (F) | 30.1 | 32.3 | 37.1 | 36.7 | 46.7 | 55.1 | 61.7 | 61.3 | 52.7 | 44.9 | 34.0 | 27.9 | 47.6 |
| Year Lowest Occurred | 1989 | 1989 | 1975 | 1967 | 1977 | 1980 | 1983 | 1976 | 1986 | 1984 | 1985 | 1990 | 1982 |
| Mean Min. Temperature (F) | 25.5 | 28.5 | 29.9 | 33.2 | 39.5 | 46.4 | 50.0 | 48.8 | 43.5 | 36.9 | 30.4 | 25.9 | 36.5 |
| Highest Mean Min. Temperature (F) | 32.2 | 35.0 | 34.2 | 37.0 | 43.9 | 51.1 | 53.5 | 52.5 | 47.5 | 40.5 | 35.1 | 31.1 | 38.0 |
| Year Highest Occurred | 1986 | 1963 | 1972 | 1990 | 1963 | 1977 | 1973 | 1971 | 1967 | 1987 | 1967 | 1969 | 1981 |
| Lowest Mean Min. Temperature (F) | 19.9 | 21.5 | 26.2 | 28.2 | 35.2 | 42.0 | 45.2 | 44.8 | 39.3 | 33.5 | 24.2 | 16.0 | 34.0 |
| Year Lowest Occurred | 1989 | 1990 | 1988 | 1967 | 1977 | 1980 | 1989 | 1989 | 1986 | 1984 | 1985 | 1990 | 1989 |
| Mean Precipitation (in.) | 6.31 | 5.16 | 5.12 | 2.63 | 1.54 | 0.82 | 0.35 | 0.48 | 0.82 | 2.40 | 5.78 | 5.61 | 37.02 |
| Highest Precipitation (in.) | 21.18 | 17.08 | 14.90 | 8.08 | 9.30 | 3.56 | 1.69 | 2.55 | 3.84 | 9.71 | 17.31 | 13.78 | 70.95 |
| Year Highest Occurred | 1978 | 1986 | 1989 | 1965 | 1990 | 1982 | 1985 | 1976 | 1986 | 1962 | 1984 | 1987 | 1983 |
| Lowest Precipitation (in.) | 0.19 | 0.21 | 0.43 | 0.08 | 0.09 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.83 | 0.07 | 14.21 |
| Year Lowest Occurred | 1984 | 1971 | 1988 | 1985 | 1975 | 1973 | 1989 | 1987 | 1988 | 1978 | 1986 | 1989 | 1976 |
| Heating Degree Days (F) | 946. | 753. | 753. | 573. | 361. | 149. | 50. | 61. | 187. | 434. | 747. | 942. | 5956. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 35. | 118. | 95. | 34. | 0. | 0. | 0. | 282. |