| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual Monthly |
|
| Mean Max. Temperature (F) | 17.7 | 25.0 | 37.0 | 55.0 | 70.3 | 79.0 | 84.4 | 83.3 | 72.2 | 57.9 | 36.9 | 23.6 | 53.5 |
| Highest Mean Max. Temperature (F) | 31.8 | 36.6 | 48.2 | 67.1 | 79.5 | 92.5 | 92.4 | 90.9 | 79.5 | 63.1 | 49.8 | 36.2 | 92.5 |
| Year Highest Occurred | 1990 | 1987 | 1981 | 1987 | 1977 | 1988 | 1988 | 1983 | 1990 | 1973 | 1999 | 1999 | 1988 |
| Lowest Mean Max. Temperature (F) | 4.3 | 11.0 | 27.5 | 40.1 | 61.7 | 72.0 | 74.5 | 77.1 | 65.2 | 53.7 | 24.1 | 7.4 | 4.3 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1975 | 1979 | 1993 | 1992 | 1992 | 1993 | 1983 | 1996 | 1983 | 1982 |
| Mean Temperature (F) | 7.4 | 14.8 | 27.3 | 43.0 | 56.7 | 65.8 | 70.8 | 69.1 | 58.2 | 44.9 | 27.1 | 13.7 | 41.6 |
| Highest Mean Temperature (F) | 22.5 | 27.6 | 36.3 | 51.2 | 65.0 | 75.1 | 75.7 | 75.7 | 64.1 | 50.3 | 37.0 | 24.0 | 75.7 |
| Year Highest Occurred | 1990 | 1987 | 1973 | 1987 | 1977 | 1988 | 1989 | 1983 | 1998 | 1973 | 1999 | 1999 | 1989 |
| Lowest Mean Temperature (F) | -6.5 | -0.9 | 18.3 | 34.2 | 49.3 | 60.3 | 63.7 | 63.7 | 52.5 | 39.9 | 15.1 | -1.6 | -6.5 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1975 | 1979 | 1982 | 1992 | 1992 | 1993 | 1976 | 1985 | 1983 | 1982 |
| Mean Min. Temperature (F) | -2.9 | 4.6 | 17.6 | 30.9 | 43.1 | 52.5 | 57.2 | 54.9 | 44.1 | 31.8 | 17.2 | 3.8 | 29.6 |
| Highest Mean Min. Temperature (F) | 13.1 | 19.7 | 27.4 | 35.4 | 50.5 | 58.0 | 61.3 | 60.5 | 49.2 | 37.4 | 24.1 | 16.1 | 61.3 |
| Year Highest Occurred | 1990 | 1998 | 1973 | 1977 | 1977 | 1991 | 1989 | 1983 | 1978 | 1973 | 1999 | 1997 | 1989 |
| Lowest Mean Min. Temperature (F) | -17.3 | -12.8 | 9.1 | 26.1 | 36.8 | 46.5 | 52.6 | 50.2 | 39.3 | 25.3 | 4.0 | -10.7 | -17.3 |
| Year Lowest Occurred | 1982 | 1979 | 1996 | 1997 | 1979 | 1982 | 1971 | 1992 | 1992 | 1976 | 1985 | 1983 | 1982 |
| Mean Precipitation (in.) | 0.60 | 0.44 | 1.04 | 1.71 | 2.45 | 3.25 | 2.76 | 2.04 | 2.26 | 1.77 | 0.82 | 0.41 | 19.55 |
| Highest Precipitation (in.) | 1.62 | 1.62 | 3.09 | 7.52 | 5.97 | 8.03 | 6.55 | 5.75 | 7.60 | 7.24 | 2.03 | 1.63 | 8.03 |
| Year Highest Occurred | 1975 | 1977 | 1987 | 1986 | 1972 | 1984 | 1994 | 1989 | 1999 | 1998 | 1977 | 1972 | 1984 |
| Lowest Precipitation (in.) | 0.00 | 0.00 | 0.13 | 0.00 | 0.15 | 0.61 | 0.10 | 0.28 | 0.22 | 0.00 | 0.00 | 0.00 | 0.00 |
| Year Lowest Occurred | 1991 | 1997 | 1985 | 1987 | 1990 | 1994 | 1976 | 1982 | 1979 | 1987 | 1990 | 1991 | 1991 |
| Heating Degree Days (F) | 1787. | 1407. | 1169. | 664. | 289. | 87. | 27. | 45. | 234. | 625. | 1140. | 1590. | 9064. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 1. | 31. | 109. | 206. | 173. | 27. | 0. | 0. | 0. | 547. |