Last year capped a string of historically hot years, driven by long-term warming and changes in rain patterns.

PHOENIX - Thursday was an unseasonably warm day across Arizona. Temperatures climbed to 79 degrees in Phoenix, just two ...

Phoenix hit 78 degrees Friday, kicking off a warm holiday weekend with temperatures nearly 10 degrees above average. Sunny ...

The BriefWe are expecting warm conditions today for the Valley, with a forecast high of 78°F.Gusty winds are expected through ...

Warmer temperatures are arriving in the Valley, with highs reaching the upper 70s—nearly 10 degrees above average—by the end ...

In the Proceedings of the National Academy of Sciences, Derek Lemoine of the University of Arizona reports that climate ...

A pair of winter storms is set to sweep across Arizona starting Wednesday, bringing widespread Valley rain and heavy mountain snow through the end of the week.

Arizona is mostly known for its hot summers and desert terrain. But during the winter, parts of the state stand out, ranking ...

The first low pressure system will move over southern Arizona as it slides up from the southwest. It will bring rain showers, ...

This system will keep skies dry and temperatures well above normal until late next week, with temperatures running about 8 to ...

New research from the University of Arizona reveals that climate change has already reduced U.S. income by about 12 percent.

PHOENIX (AZFamily) — Unseasonably warm weather is on the way for much of Arizona for the rest of this week and the upcoming ...