Heat dome to scorch major U.S. cities this week. Maps show the forecast and warnings.

A heat wave will blast much of the eastern U.S. this week, and forecasters say temperatures will feel even hotter because of ...

Map shows July 4 firework conditions across US

An interactive forecast map reveals where Americans may get the clearest views of holiday fireworks.
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Weather blog: Weather Prediction Center proposing forecast chart changes

The Weather Prediction Center (WPC) is proposing changes to its National Forecast Charts and is seeking feedback to improve ...

US heat forecast: See where Americans are at the most risk for extreme heat

CNN is tracking extreme heat conditions for Americans each day. See where the risks are greatest — and where high temperature records might be broken.

Forecast into Saturday July 4

Forecast into Saturday July 4 ...