The National Weather Service called the warm and above-average temperatures coming in behind the system "the first ...

The first major U.S. heat wave of the year starts on Friday. It brings dangerously high temperatures and is expected to last ...

NWS issues severe weather forecast for Washington D.C., with thunderstorms and high heat index warnings for the coming days.

Heat indices could spike into the triple digits on June 22 and June 23 as both the temperature and humidity reach their ...

Heat is the number one killer -- and it’s heading to the most densely populated part of America for a prolonged period.

A wild stretch of weather is expected to engulf the NYC area in the coming days, bringing a mixed bag of heavy rain, ...

Heat indexes -- a measure of how hot it feels factoring in humidity -- could near 110 degrees Monday through Wednesday.

The first significant heat wave of the summer is taking aim at a huge chunk of the United States later this week, and ...