Jul 25, 2014; 11:38 AM ET
Stormy weather will be the theme for the weekend across the Midwest and Ohio Valley.
Jul 26, 2014; 12:18 AM ET
Jul 25, 2014; 10:47 PM ET
Fresh cooler and less humid air will settle over the New York City area into the weekend.
Jul 25, 2014; 10:46 PM ET
Fresh cooler and less humid air will settle over the Philadelphia area into the weekend.
Jul 25, 2014; 10:45 PM ET
Fresh cooler and less humid air will settle over the Harrisburg area for Friday.
Jul 25, 2014; 10:44 PM ET
Dallas will face consistent temperatures with a beating sun for the next several days and into the weekend.
Jul 25, 2014; 10:25 PM ET
With partly sunny skies ahead, the San Francisco area will not be receiving needed drought relief for an extended stretch of time.
Jul 25, 2014; 9:59 PM ET
After a bout with midweek showers and storms, Seattle will have drier, pleasant weather that will carry into Wednesday.
Jul 25, 2014; 9:56 PM ET
The Cleveland area will see a return of thunderstorms into the weekend.
Jul 25, 2014; 9:54 PM ET
Cooler weather through late week in Detroit will be replaced by more seasonable temperatures and thunderstorms for the weekend.
Jul 25, 2014; 9:28 PM ET
Fresh cooler and less humid air will settle over the Washington, D.C., area into the weekend.
Daily U.S. Extremespast 24 hours
|High||123°||Death Valley, CA|
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.
Cold morning: 39 at Ironwood and Marquette.