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

STATEN ISLAND, N.Y. — After weeks of predominantly chilly and wet weather, New York City will finally see some summer heat.

A heat wave is in the forecast for eastern Nebraska this weekend, with the heat index predicted to reach triple digits.

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

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

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

It's important that Hoosiers know the signs of serious illness during a heat risk and how to stay safe and cool before next ...

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