Every forecast across The Lower Colorado, highway-clear.
Official National Weather Service forecasts for Yuma and the lower Colorado — Yuma and La Paz counties, from the Yuma Valley and San Luis north along the river through Quartzsite and Parker, and east on I-8 across the Gila Bend desert.
Every Arizona region shares one system — the same maps, the same live radar, the same climate record. Yuma is the sunniest place on Earth — 90 percent of the possible daylight, more than 4,000 hours a year — and the driest corner of the driest state, under three inches of rain. It grows most of America's winter lettuce on Colorado River water, and its population doubles every winter when the snowbirds come down I-8 and US-95.