It's no secret that Phoenix is hot, but late summer and the start of fall were scorchers, even by Valley of the Sun standards. Between Sept. 23 and Oct. 14, Phoenix set daily record high temperatures ...

Discussion about climate classifications usually revolves around geographic location at a broad scale. One of the most popular climate classification systems, the Köppen system, divides earth into ...

David Easterling, a NOAA climate scientist, didn’t think much about the rainfall forecast until his wife called him on the evening of Tuesday, Sept. 24, asking whether he’d seen the weather outlook.

With rising temperatures, the atmosphere can hold more moisture, meaning precipitation has a tendency to fall at more extreme levels. By Christina Kelso The severe storm system that has inundated the ...