4.Yuma, Arizona – The sunniest place in the world.
Yuma, Arizona, is noted for its weather “extremes”. According to the National Climatic Data Center, It is the driest, sunniest city and the least humid place in the United States. It also holds the Guinness World Record for sunniest city on Earth. The city has the lowest frequency of rain and snow, and has the most number of days, 175, per year. It experiences an average of 4015 hours of sunshine per year, and 11.0 hours of sunshine per day.