10 sunniest cities in the US - Yuma, Arizona • Earth.com

Last update: December 13th, 2019 at 8:00 am

Yuma, Arizona

With a 90 percent chance of sunshine year-round, Yuma is not only the sunniest city in the United States but is also the sunniest place on Earth. Yuma receives more than 4,000 sunlight hours per year and averages 11 sunny hours per day.

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