Weather News

Daily U.S. Extremes

past 24 hours

  Extreme Location
High 123° Death Valley, CA
Low 25° Stanley, ID
Precip 3.16" Fairfield, IA


Summer peak temperature tends to lag because of maximum energy input through sunshine, a lag that is commonly about four weeks in the United States. This time is needed for temperature to reach equilibrium with incoming solar energy. Thus, the third or fourth week of July typically mark the peak of summer with respect to temperature. The same lag between temperature and incoming energy can be seen in winter.

This Day In Weather History

Pittsburgh, Pa. (1872)
Cloudburst of 30 minutes followed by a flash flood. Over 133 people drowned on the north side of Butcher Run and Wood's Run.

Michigan (1991)
Cold morning: 39 at Ironwood and Marquette.

7/26/2014 5:05:31 AM /news.asp 8 .75.113 (accuweather)-- [new]