| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 23.2 | 29.4 | 41.9 | 59.6 | 73.5 | 82.1 | 86.3 | 83.3 | 74.0 | 61.8 | 43.3 | 27.7 | 57.2 |
| Highest Mean Max. Temperature (F) | 37.6 | 43.6 | 55.8 | 70.4 | 82.9 | 89.8 | 92.3 | 90.5 | 80.8 | 73.2 | 50.3 | 36.2 | 61.9 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1987 | 1977 | 1988 | 1974 | 1969 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Max. Temperature (F) | 12.1 | 20.1 | 29.3 | 49.6 | 67.1 | 75.0 | 79.8 | 77.2 | 64.3 | 56.9 | 33.6 | 12.1 | 53.9 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1967 | 1969 | 1962 | 1985 | 1965 | 1980 | 1985 | 1983 | 1965 |
| Mean Temperature (F) | 12.9 | 18.9 | 32.2 | 47.7 | 60.5 | 69.5 | 74.1 | 71.2 | 62.1 | 50.2 | 34.5 | 19.0 | 46.1 |
| Highest Mean Temperature (F) | 26.8 | 32.5 | 42.8 | 55.8 | 69.3 | 75.6 | 78.6 | 76.7 | 68.2 | 59.7 | 40.2 | 29.2 | 50.7 |
| Year Highest Occurred | 1990 | 1987 | 1968 | 1977 | 1977 | 1988 | 1974 | 1983 | 1978 | 1963 | 1963 | 1965 | 1987 |
| Lowest Mean Temperature (F) | 2.4 | 8.3 | 20.1 | 41.0 | 54.1 | 62.8 | 69.2 | 66.8 | 54.8 | 44.8 | 25.9 | 3.4 | 43.5 |
| Year Lowest Occurred | 1979 | 1979 | 1965 | 1975 | 1967 | 1969 | 1971 | 1985 | 1965 | 1988 | 1985 | 1983 | 1979 |
| Mean Min. Temperature (F) | 2.5 | 8.3 | 22.3 | 35.7 | 47.5 | 56.7 | 61.9 | 59.0 | 50.0 | 38.7 | 25.8 | 10.4 | 34.9 |
| Highest Mean Min. Temperature (F) | 15.9 | 21.4 | 33.7 | 42.2 | 55.6 | 61.3 | 66.0 | 64.2 | 55.5 | 46.1 | 30.5 | 22.1 | 39.4 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1987 | 1983 | 1978 | 1963 | 1983 | 1965 | 1987 |
| Lowest Mean Min. Temperature (F) | -7.9 | -3.6 | 10.9 | 30.6 | 41.1 | 50.6 | 56.6 | 54.0 | 45.3 | 32.0 | 18.1 | -5.3 | 32.5 |
| Year Lowest Occurred | 1982 | 1979 | 1965 | 1961 | 1967 | 1969 | 1971 | 1967 | 1974 | 1988 | 1985 | 1983 | 1966 |
| Mean Precipitation (in.) | 0.69 | 0.68 | 1.73 | 2.45 | 3.56 | 4.34 | 4.26 | 3.88 | 3.06 | 2.21 | 1.55 | 0.89 | 29.30 |
| Highest Precipitation (in.) | 2.85 | 2.00 | 4.05 | 5.48 | 6.80 | 9.95 | 14.67 | 9.10 | 6.33 | 5.78 | 5.20 | 2.91 | 39.94 |
| Year Highest Occurred | 1975 | 1981 | 1990 | 1986 | 1962 | 1968 | 1987 | 1984 | 1965 | 1968 | 1975 | 1982 | 1965 |
| Lowest Precipitation (in.) | 0.04 | 0.00 | 0.60 | 0.08 | 1.33 | 0.20 | 0.85 | 0.29 | 0.51 | 0.34 | 0.03 | 0.00 | 17.24 |
| Year Lowest Occurred | 1974 | 1987 | 1981 | 1987 | 1988 | 1988 | 1988 | 1969 | 1969 | 1978 | 1967 | 1986 | 1969 |
| Heating Degree Days (F) | 1615. | 1291. | 1017. | 519. | 203. | 27. | 6. | 19. | 124. | 464. | 915. | 1426. | 7626. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 63. | 162. | 288. | 211. | 37. | 5. | 0. | 0. | 766. |