| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 16.1 | 24.0 | 36.0 | 52.6 | 67.5 | 74.6 | 78.7 | 76.6 | 65.9 | 53.5 | 33.9 | 20.7 | 50.0 |
| Highest Mean Max. Temperature (F) | 27.4 | 34.4 | 46.2 | 65.3 | 77.9 | 80.4 | 85.0 | 83.6 | 73.0 | 60.6 | 46.8 | 30.4 | 85.0 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1976 | 1975 | 1983 | 1998 | 1973 | 1999 | 1997 | 1975 |
| Lowest Mean Max. Temperature (F) | 3.5 | 13.4 | 26.2 | 43.8 | 58.0 | 68.2 | 69.1 | 71.1 | 59.9 | 49.2 | 24.6 | 7.9 | 3.5 |
| Year Lowest Occurred | 1982 | 1989 | 1996 | 1975 | 1979 | 1993 | 1992 | 1977 | 1993 | 1987 | 1996 | 1983 | 1982 |
| Mean Temperature (F) | 5.9 | 13.3 | 26.0 | 41.1 | 55.1 | 63.3 | 67.9 | 65.6 | 55.6 | 44.3 | 26.5 | 12.0 | 39.7 |
| Highest Mean Temperature (F) | 18.5 | 28.9 | 35.8 | 49.6 | 65.1 | 68.5 | 72.7 | 71.8 | 61.0 | 50.4 | 36.9 | 24.3 | 72.7 |
| Year Highest Occurred | 1990 | 1998 | 2000 | 1987 | 1977 | 1995 | 1975 | 1983 | 1998 | 1973 | 1999 | 1997 | 1975 |
| Lowest Mean Temperature (F) | -7.4 | 1.5 | 15.9 | 34.4 | 47.6 | 57.6 | 59.4 | 60.2 | 50.2 | 38.6 | 17.3 | -0.4 | -7.4 |
| Year Lowest Occurred | 1982 | 1989 | 1996 | 1996 | 1979 | 1982 | 1992 | 1977 | 1993 | 1976 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -4.3 | 2.6 | 16.0 | 29.5 | 42.6 | 51.9 | 57.0 | 54.6 | 45.3 | 35.0 | 19.0 | 3.3 | 29.4 |
| Highest Mean Min. Temperature (F) | 9.6 | 23.3 | 25.8 | 34.2 | 52.2 | 57.0 | 61.1 | 59.9 | 50.3 | 40.6 | 27.0 | 18.2 | 61.1 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1995 | 1983 | 1983 | 1978 | 1994 | 1999 | 1997 | 1983 |
| Lowest Mean Min. Temperature (F) | -18.4 | -10.5 | 5.6 | 24.4 | 37.1 | 46.1 | 49.6 | 49.2 | 39.8 | 27.8 | 9.0 | -9.4 | -18.4 |
| Year Lowest Occurred | 1982 | 1989 | 1996 | 1996 | 1979 | 1982 | 1992 | 1977 | 1974 | 1976 | 1985 | 1976 | 1982 |
| Mean Precipitation (in.) | 0.69 | 0.57 | 0.86 | 1.52 | 2.67 | 4.09 | 4.33 | 3.50 | 2.75 | 2.26 | 1.12 | 0.63 | 24.99 |
| Highest Precipitation (in.) | 2.07 | 1.45 | 1.60 | 3.67 | 6.35 | 8.38 | 7.90 | 7.39 | 7.35 | 5.00 | 3.35 | 1.18 | 8.38 |
| Year Highest Occurred | 1996 | 1998 | 1979 | 1986 | 1982 | 1983 | 1975 | 1974 | 1973 | 1971 | 1988 | 1995 | 1983 |
| Lowest Precipitation (in.) | 0.02 | 0.03 | 0.18 | 0.03 | 0.10 | 0.54 | 0.57 | 0.45 | 0.26 | 0.33 | 0.09 | 0.10 | 0.02 |
| Year Lowest Occurred | 1973 | 1988 | 1992 | 1980 | 1980 | 1995 | 1984 | 1982 | 1976 | 1976 | 1976 | 1979 | 1973 |
| Heating Degree Days (F) | 1834. | 1449. | 1210. | 719. | 336. | 117. | 56. | 84. | 291. | 643. | 1157. | 1644. | 9540. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 28. | 65. | 145. | 103. | 8. | 0. | 0. | 0. | 349. |