| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 28.9 | 38.5 | 49.9 | 61.8 | 71.0 | 79.1 | 86.3 | 86.1 | 76.7 | 62.4 | 41.6 | 29.1 | 59.3 |
| Highest Mean Max. Temperature (F) | 37.2 | 46.4 | 56.9 | 68.4 | 76.5 | 84.8 | 95.0 | 94.0 | 85.2 | 70.3 | 47.3 | 35.3 | 62.4 |
| Year Highest Occurred | 1981 | 1967 | 1981 | 1977 | 1969 | 1969 | 1985 | 1967 | 1967 | 1987 | 1987 | 1979 | 1987 |
| Lowest Mean Max. Temperature (F) | 14.5 | 32.4 | 42.6 | 56.2 | 65.3 | 72.7 | 80.3 | 79.5 | 69.4 | 57.4 | 30.2 | 19.6 | 57.1 |
| Year Lowest Occurred | 1969 | 1989 | 1971 | 1972 | 1984 | 1981 | 1983 | 1964 | 1972 | 1985 | 1985 | 1983 | 1984 |
| Mean Temperature (F) | 19.8 | 27.4 | 36.8 | 46.1 | 54.3 | 61.8 | 67.2 | 66.7 | 57.7 | 46.1 | 32.6 | 21.0 | 44.8 |
| Highest Mean Temperature (F) | 30.6 | 33.5 | 41.7 | 51.5 | 57.3 | 66.4 | 71.6 | 72.0 | 63.0 | 51.4 | 37.3 | 28.3 | 47.8 |
| Year Highest Occurred | 1981 | 1977 | 1981 | 1987 | 1987 | 1986 | 1985 | 1986 | 1990 | 1988 | 1987 | 1979 | 1987 |
| Lowest Mean Temperature (F) | 4.1 | 18.8 | 30.2 | 42.0 | 50.4 | 56.7 | 62.3 | 62.0 | 51.9 | 42.6 | 20.1 | 10.3 | 42.3 |
| Year Lowest Occurred | 1969 | 1985 | 1971 | 1982 | 1984 | 1981 | 1966 | 1968 | 1972 | 1984 | 1985 | 1983 | 1985 |
| Mean Min. Temperature (F) | 10.6 | 16.3 | 23.6 | 30.4 | 37.5 | 44.4 | 48.0 | 47.3 | 38.5 | 29.7 | 23.5 | 12.7 | 30.2 |
| Highest Mean Min. Temperature (F) | 24.0 | 23.1 | 28.8 | 35.5 | 40.8 | 48.6 | 52.3 | 52.2 | 42.8 | 34.3 | 28.9 | 22.1 | 33.2 |
| Year Highest Occurred | 1981 | 1961 | 1983 | 1990 | 1987 | 1989 | 1990 | 1977 | 1963 | 1963 | 1983 | 1989 | 1987 |
| Lowest Mean Min. Temperature (F) | -6.4 | 4.0 | 17.4 | 26.0 | 33.8 | 40.2 | 44.1 | 42.2 | 33.1 | 25.7 | 10.0 | 0.9 | 27.1 |
| Year Lowest Occurred | 1969 | 1985 | 1965 | 1968 | 1965 | 1976 | 1972 | 1969 | 1965 | 1972 | 1985 | 1983 | 1985 |
| Mean Precipitation (in.) | 2.05 | 1.26 | 0.95 | 0.78 | 0.91 | 0.87 | 0.55 | 0.78 | 0.65 | 0.80 | 1.86 | 2.80 | 14.26 |
| Highest Precipitation (in.) | 4.32 | 3.12 | 2.79 | 2.43 | 3.21 | 2.23 | 1.80 | 3.35 | 2.49 | 3.51 | 5.28 | 7.01 | 22.63 |
| Year Highest Occurred | 1983 | 1972 | 1983 | 1963 | 1990 | 1972 | 1975 | 1976 | 1978 | 1975 | 1983 | 1968 | 1975 |
| Lowest Precipitation (in.) | 0.09 | 0.19 | 0.01 | 0.00 | 0.14 | 0.05 | 0.00 | 0.00 | 0.00 | 0.04 | 0.19 | 0.21 | 8.08 |
| Year Lowest Occurred | 1977 | 1988 | 1976 | 1973 | 1973 | 1968 | 1970 | 1973 | 1976 | 1987 | 1976 | 1976 | 1985 |
| Heating Degree Days (F) | 1401. | 1053. | 874. | 567. | 332. | 144. | 48. | 61. | 243. | 586. | 972. | 1364. | 7645. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 48. | 117. | 113. | 24. | 0. | 0. | 0. | 302. |