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

According to a forecast posted by NWS in Phoenix, "dry conditions with temperatures hovering around 5 to 8 degrees above ...

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

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

From encouraging ideas about climate solutions to dystopian views of the future, climate leaders found a lot to read over the ...

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

Phoenix Mayor Kate Gallego said she was proud of the way U.S. mayors took the lead on climate issues as the White House ...

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

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

We're not expecting record-breaking temperatures today, but things will still be on the warm side in the Valley.

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.