| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 19.8 | 27.3 | 39.3 | 57.4 | 71.2 | 79.1 | 84.8 | 83.5 | 73.2 | 58.9 | 37.1 | 24.2 | 54.7 |
| Highest Mean Max. Temperature (F) | 32.8 | 39.0 | 50.7 | 70.1 | 79.8 | 90.3 | 92.5 | 92.4 | 81.6 | 65.4 | 50.5 | 39.1 | 92.5 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1976 | 1983 | 1976 | 1974 | 1999 | 1979 | 1976 |
| Lowest Mean Max. Temperature (F) | 6.5 | 11.1 | 29.2 | 42.7 | 63.4 | 71.0 | 74.1 | 77.6 | 66.2 | 53.9 | 24.6 | 7.4 | 6.5 |
| Year Lowest Occurred | 1994 | 1979 | 1996 | 1975 | 1996 | 1993 | 1992 | 1992 | 1999 | 1995 | 1996 | 1983 | 1994 |
| Mean Temperature (F) | 9.6 | 17.0 | 29.1 | 44.4 | 57.5 | 66.0 | 71.2 | 69.4 | 59.1 | 46.2 | 27.9 | 14.5 | 42.7 |
| Highest Mean Temperature (F) | 23.8 | 30.1 | 37.7 | 53.8 | 64.9 | 75.1 | 77.3 | 77.4 | 64.0 | 51.3 | 38.3 | 25.4 | 77.4 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1974 | 1983 | 1978 | 1973 | 1999 | 1979 | 1983 |
| Lowest Mean Temperature (F) | -6.6 | 0.9 | 19.3 | 35.6 | 52.1 | 59.5 | 63.5 | 62.6 | 54.3 | 42.5 | 15.9 | -0.8 | -6.6 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1975 | 1979 | 1982 | 1992 | 1977 | 1993 | 1976 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -0.7 | 6.6 | 18.8 | 31.4 | 43.7 | 52.9 | 57.5 | 55.3 | 45.0 | 33.4 | 18.7 | 4.8 | 30.6 |
| Highest Mean Min. Temperature (F) | 14.8 | 21.1 | 29.2 | 37.9 | 49.9 | 59.8 | 62.3 | 62.3 | 49.6 | 39.4 | 26.0 | 15.6 | 62.3 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1977 | 1977 | 1988 | 1974 | 1983 | 1998 | 1973 | 1999 | 1987 | 1974 |
| Lowest Mean Min. Temperature (F) | -20.3 | -9.3 | 9.3 | 27.1 | 38.1 | 44.7 | 52.9 | 46.4 | 39.5 | 27.5 | 5.4 | -9.0 | -20.3 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1997 | 1983 | 1982 | 1992 | 1977 | 1984 | 1976 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.75 | 0.66 | 1.44 | 1.91 | 2.84 | 3.16 | 2.88 | 2.22 | 2.02 | 1.80 | 1.03 | 0.41 | 21.12 |
| Highest Precipitation (in.) | 2.05 | 2.28 | 3.96 | 8.61 | 9.24 | 8.88 | 6.99 | 5.63 | 7.97 | 5.50 | 5.47 | 1.40 | 9.24 |
| Year Highest Occurred | 1997 | 1979 | 1975 | 1986 | 1991 | 1975 | 1993 | 1998 | 1973 | 1998 | 1977 | 1972 | 1991 |
| Lowest Precipitation (in.) | 0.01 | 0.08 | 0.11 | 0.00 | 0.33 | 0.45 | 0.29 | 0.29 | 0.34 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1991 | 1985 | 1971 | 1987 | 1976 | 1974 | 1976 | 1982 | 1974 | 1987 | 1999 | 1986 | 1987 |
| Heating Degree Days (F) | 1721. | 1345. | 1115. | 622. | 261. | 82. | 31. | 54. | 203. | 584. | 1114. | 1565. | 8697. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 4. | 27. | 113. | 222. | 191. | 26. | 0. | 0. | 0. | 583. |