| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 19.3 | 25.4 | 37.8 | 55.7 | 69.5 | 78.3 | 83.3 | 80.8 | 70.8 | 58.8 | 39.8 | 23.9 | 53.6 |
| Highest Mean Max. Temperature (F) | 35.5 | 39.4 | 49.1 | 69.0 | 80.4 | 90.1 | 91.4 | 87.6 | 78.0 | 70.2 | 48.1 | 33.1 | 59.4 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1988 | 1976 | 1976 | 1983 | 1976 | 1963 | 1981 | 1986 | 1987 |
| Lowest Mean Max. Temperature (F) | 6.3 | 14.6 | 27.0 | 43.8 | 62.2 | 70.4 | 77.2 | 76.1 | 58.7 | 51.9 | 28.9 | 8.3 | 50.0 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1977 | 1965 | 1969 | 1985 | 1983 | 1979 |
| Mean Temperature (F) | 8.9 | 14.9 | 28.1 | 44.4 | 57.2 | 66.2 | 71.4 | 68.8 | 58.9 | 47.4 | 30.8 | 14.6 | 42.6 |
| Highest Mean Temperature (F) | 23.3 | 29.2 | 38.9 | 52.6 | 65.2 | 74.5 | 76.2 | 75.1 | 64.5 | 58.3 | 37.6 | 24.4 | 47.3 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1976 | 1983 | 1978 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Temperature (F) | -4.8 | 4.1 | 16.3 | 36.5 | 50.4 | 59.1 | 65.6 | 64.3 | 51.2 | 42.4 | 20.0 | -0.7 | 39.6 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1985 | 1965 | 1976 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | -1.6 | 4.3 | 18.2 | 32.9 | 44.8 | 54.0 | 59.4 | 56.8 | 47.0 | 36.0 | 21.6 | 5.3 | 31.6 |
| Highest Mean Min. Temperature (F) | 11.1 | 19.0 | 31.5 | 38.2 | 52.0 | 59.3 | 63.5 | 62.6 | 52.5 | 46.4 | 27.1 | 16.4 | 35.2 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1981 | 1974 | 1987 |
| Lowest Mean Min. Temperature (F) | -15.8 | -8.7 | 5.6 | 26.5 | 38.5 | 47.6 | 54.0 | 52.0 | 40.2 | 29.9 | 11.0 | -9.7 | 28.5 |
| Year Lowest Occurred | 1982 | 1989 | 1965 | 1961 | 1967 | 1982 | 1971 | 1985 | 1984 | 1976 | 1985 | 1983 | 1985 |
| Mean Precipitation (in.) | 0.63 | 0.56 | 1.28 | 1.93 | 3.18 | 3.67 | 2.95 | 3.19 | 2.78 | 2.20 | 1.13 | 0.56 | 24.06 |
| Highest Precipitation (in.) | 3.22 | 1.72 | 3.63 | 6.07 | 6.26 | 7.73 | 8.90 | 6.58 | 5.80 | 8.61 | 4.79 | 2.84 | 36.20 |
| Year Highest Occurred | 1969 | 1971 | 1977 | 1986 | 1972 | 1979 | 1962 | 1988 | 1965 | 1971 | 1970 | 1968 | 1986 |
| Lowest Precipitation (in.) | 0.04 | 0.00 | 0.16 | 0.10 | 0.26 | 0.62 | 1.06 | 0.15 | 0.00 | 0.04 | 0.00 | 0.00 | 11.28 |
| Year Lowest Occurred | 1990 | 1982 | 1967 | 1980 | 1976 | 1988 | 1967 | 1969 | 1979 | 1964 | 1984 | 1986 | 1976 |
| Heating Degree Days (F) | 1739. | 1403. | 1144. | 618. | 272. | 81. | 19. | 41. | 204. | 546. | 1026. | 1562. | 8655. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 31. | 117. | 217. | 159. | 21. | 0. | 0. | 0. | 545. |