An understanding of some systematic weather patterns is needed when interpreting a map. Easterly winds over the tropics and subtropics incorporate wave-like disturbances ... Cut off from its heat ...

A map shows areas in California where temperatures are expected to surpass 100 this week. There has been an early-season heat wave in Southern and Central California. On Monday, people in four states ...

USA TODAY analysis found that 90-plus heat index days are becoming more frequent, starting earlier, lasting longer and occurring in longer streaks ...

The heat will start rolling in today, and the high temperatures are getting higher in the latest forecast. Here's how hot it ...

Here's a look at what's in store. Ohio temperatures start to rise on Thursday, May 15 Per the NWS map, the heat will start to build in Ohio today, Thursday, May 15. High temperatures that day are ...

Highs will reach the mid-90s, with the heat index entering triple digits this afternoon. We are well above the average temperature for this time of year which is 86 degrees.

Meteorologists are projecting unusually high temperatures in Southern California this week, with the heat predicted to climb above 100 degrees in the San Fernando Valley and reach the 90s elsewhere.

Some regions could see triple-digit temperatures. An early season heat wave is poised to bring scorching temperatures to much of the southern U.S., making the region feel more like summer than ...

An early season heat wave is poised to bring scorching temperatures to much of the southern U.S., making the region feel more like summer than spring over the coming days.

It's a good time to be thinking about it. Much of Florida saw near-record temperatures over the weekend as a heat wave swept over the southern United States, and the hot weather is expected to ...