| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 45.0 | 52.3 | 59.5 | 66.7 | 75.7 | 84.5 | 92.6 | 91.7 | 82.6 | 69.8 | 52.9 | 44.9 | 68.2 |
| Highest Mean Max. Temperature (F) | 52.7 | 58.2 | 65.1 | 76.9 | 81.3 | 91.7 | 100.7 | 98.5 | 92.4 | 81.2 | 59.5 | 52.0 | 72.0 |
| Year Highest Occurred | 1989 | 1988 | 1990 | 1990 | 1987 | 1987 | 1985 | 1986 | 1990 | 1988 | 1989 | 1979 | 1990 |
| Lowest Mean Max. Temperature (F) | 27.6 | 43.6 | 54.4 | 58.4 | 67.6 | 77.8 | 86.5 | 84.8 | 75.6 | 63.9 | 42.5 | 31.8 | 66.3 |
| Year Lowest Occurred | 1979 | 1989 | 1975 | 1967 | 1962 | 1980 | 1983 | 1968 | 1985 | 1984 | 1985 | 1985 | 1982 |
| Mean Temperature (F) | 35.4 | 40.5 | 45.2 | 50.6 | 58.0 | 65.7 | 71.7 | 71.0 | 63.1 | 53.0 | 42.4 | 35.7 | 52.7 |
| Highest Mean Temperature (F) | 41.5 | 45.1 | 50.2 | 57.5 | 62.1 | 70.1 | 77.1 | 75.2 | 69.6 | 61.0 | 46.0 | 41.6 | 55.0 |
| Year Highest Occurred | 1967 | 1961 | 1986 | 1990 | 1987 | 1987 | 1985 | 1967 | 1990 | 1988 | 1990 | 1973 | 1990 |
| Lowest Mean Temperature (F) | 18.7 | 30.4 | 41.2 | 45.2 | 54.0 | 61.6 | 67.7 | 66.7 | 58.3 | 49.2 | 31.6 | 24.4 | 50.5 |
| Year Lowest Occurred | 1979 | 1989 | 1971 | 1975 | 1977 | 1980 | 1983 | 1980 | 1985 | 1969 | 1985 | 1985 | 1985 |
| Mean Min. Temperature (F) | 25.7 | 28.6 | 30.9 | 34.4 | 40.2 | 47.0 | 50.7 | 50.3 | 43.5 | 36.2 | 31.9 | 26.5 | 37.2 |
| Highest Mean Min. Temperature (F) | 31.9 | 34.5 | 36.0 | 38.0 | 42.8 | 50.5 | 53.8 | 54.9 | 48.5 | 41.0 | 36.0 | 33.2 | 38.6 |
| Year Highest Occurred | 1981 | 1961 | 1983 | 1990 | 1987 | 1969 | 1975 | 1977 | 1963 | 1979 | 1983 | 1973 | 1961 |
| Lowest Mean Min. Temperature (F) | 9.7 | 17.2 | 27.1 | 30.4 | 38.0 | 42.4 | 47.7 | 46.0 | 39.8 | 33.0 | 20.6 | 16.9 | 34.4 |
| Year Lowest Occurred | 1979 | 1989 | 1965 | 1975 | 1982 | 1976 | 1986 | 1988 | 1965 | 1969 | 1985 | 1985 | 1985 |
| Mean Precipitation (in.) | 1.52 | 0.93 | 0.83 | 0.67 | 0.67 | 0.57 | 0.29 | 0.45 | 0.47 | 0.61 | 1.50 | 1.54 | 10.05 |
| Highest Precipitation (in.) | 4.32 | 3.24 | 2.35 | 2.25 | 1.75 | 2.37 | 1.70 | 1.59 | 1.82 | 1.90 | 4.50 | 5.23 | 18.78 |
| Year Highest Occurred | 1970 | 1983 | 1983 | 1989 | 1968 | 1969 | 1987 | 1968 | 1982 | 1962 | 1984 | 1964 | 1983 |
| Lowest Precipitation (in.) | 0.15 | 0.06 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.03 | 6.02 |
| Year Lowest Occurred | 1985 | 1965 | 1968 | 1966 | 1974 | 1974 | 1988 | 1988 | 1975 | 1988 | 1969 | 1976 | 1967 |
| Heating Degree Days (F) | 918. | 686. | 614. | 432. | 223. | 70. | 8. | 15. | 126. | 372. | 678. | 908. | 5050. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 6. | 91. | 216. | 201. | 69. | 0. | 0. | 0. | 583. |