| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 19.5 | 26.8 | 39.0 | 56.6 | 70.9 | 79.0 | 82.9 | 80.6 | 71.3 | 58.2 | 37.4 | 23.2 | 53.8 |
| Highest Mean Max. Temperature (F) | 34.2 | 41.2 | 49.5 | 69.0 | 80.6 | 88.5 | 90.7 | 87.2 | 79.2 | 63.6 | 50.9 | 33.7 | 90.7 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1988 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1999 | 1988 |
| Lowest Mean Max. Temperature (F) | 7.2 | 14.5 | 29.4 | 44.2 | 64.3 | 73.7 | 75.5 | 74.8 | 65.6 | 53.5 | 27.3 | 6.9 | 6.9 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1975 | 1979 | 1993 | 1992 | 1985 | 1989 | 1972 | 1985 | 1983 | 1983 |
| Mean Temperature (F) | 9.7 | 17.1 | 29.2 | 44.8 | 58.5 | 67.3 | 71.8 | 69.7 | 60.2 | 47.6 | 29.7 | 15.1 | 43.4 |
| Highest Mean Temperature (F) | 23.7 | 30.8 | 39.4 | 54.2 | 66.2 | 74.8 | 77.3 | 76.1 | 66.7 | 53.1 | 40.6 | 24.5 | 77.3 |
| Year Highest Occurred | 1990 | 1987 | 2000 | 1987 | 1988 | 1988 | 1988 | 1983 | 1998 | 1973 | 1999 | 1997 | 1988 |
| Lowest Mean Temperature (F) | -3.3 | 4.2 | 19.9 | 36.5 | 52.3 | 62.1 | 65.4 | 65.1 | 54.5 | 42.9 | 20.2 | -1.1 | -3.3 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1975 | 1979 | 1982 | 1992 | 1985 | 1989 | 1976 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -0.2 | 7.3 | 19.4 | 32.9 | 46.1 | 55.6 | 60.7 | 58.7 | 49.0 | 37.0 | 21.9 | 6.9 | 32.9 |
| Highest Mean Min. Temperature (F) | 13.2 | 24.0 | 29.2 | 39.3 | 53.1 | 61.0 | 65.0 | 64.9 | 54.2 | 42.6 | 30.3 | 18.9 | 65.0 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1988 | 1983 | 1983 | 1978 | 1973 | 1999 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -13.7 | -6.2 | 10.4 | 27.8 | 38.8 | 49.5 | 55.0 | 54.6 | 42.6 | 30.7 | 13.0 | -9.1 | -13.7 |
| Year Lowest Occurred | 1982 | 1979 | 1975 | 1997 | 1997 | 1982 | 1971 | 1977 | 1974 | 1976 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 1.14 | 0.78 | 2.02 | 2.36 | 3.56 | 5.45 | 4.10 | 3.94 | 3.31 | 2.42 | 1.67 | 0.92 | 31.67 |
| Highest Precipitation (in.) | 3.16 | 2.06 | 4.73 | 6.40 | 8.52 | 14.97 | 9.11 | 6.36 | 11.30 | 6.08 | 4.72 | 2.29 | 14.97 |
| Year Highest Occurred | 1975 | 1971 | 1990 | 1994 | 1977 | 1983 | 1986 | 1990 | 1991 | 1981 | 1977 | 1982 | 1983 |
| Lowest Precipitation (in.) | 0.00 | 0.02 | 0.48 | 0.28 | 0.84 | 0.52 | 1.11 | 1.28 | 0.43 | 0.12 | 0.10 | 0.00 | 0.00 |
| Year Lowest Occurred | 1978 | 1982 | 1994 | 1987 | 1976 | 1988 | 1988 | 1976 | 2000 | 1978 | 1984 | 1975 | 1978 |
| Heating Degree Days (F) | 1718. | 1342. | 1109. | 612. | 250. | 58. | 17. | 30. | 185. | 541. | 1061. | 1549. | 8472. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 4. | 48. | 126. | 228. | 173. | 38. | 0. | 0. | 0. | 617. |