The weather in Phoenix was often unpredictable, with an unexpected series of fall rainstorms and a sudden December heat wave.

A stubborn ridge of high pressure is pushing temperatures into record territory and breaking records along the way.

Philadelphia broke a daily record high today, reaching 99 degrees as the region's heat wave officially began. The high temperature so far at Philadelphia International Airport reached 99, breaking a ...

Extreme heat warnings and advisories have been issued to more than 130 million people across the eastern U.S. this week. (National Weather Service) A dangerous heat wave continues to scorch a large ...

After a winter heat wave melted ice rinks across North Texas, colder weather is bringing skaters back, with one Dallas rink ...

Today marks the second straight day of high temperatures in the 90s and heat indices topping 100°, and unfortunately, this is just the beginning of a prolonged and potentially dangerous heat wave ...

The 1995 Chicago heat wave, which took place 30 years ago this week, remains the Chicago area's deadliest weather disaster. Heat indices over 100 degrees kept a hold on the city for five straight days ...

Earlier this year, a spate of deaths in Florida caused by Vibrio vulnificus, known as the flesh-eating bacteria, made ...

Thermometers neared 80 degrees as an unusual heat wave ushered in the new year. Akron residents opened their windows to let ...

There's potential of a third heat wave this summer, and it quite possibly has already begun. Temperatures turned up to 90 degrees in Central Park on Sunday, which could be the start to the tri-state's ...

NEW YORK – A massive heat dome that sparked the first major heat wave of the summer brought record-breaking temperatures to cities from the Midwest to the Northeast this week, but some much-needed ...