Sunny Weather in US

Sunniest US Cities

The major cities in United States with the most sun year round are Phoenix and Las Vegas. Both are sunny for 85 percent of the time between sunrise and sunset, amounting to over 3800 hours a year.

It gets even sunnier during July and August in Sacramento, California, where the sun shines 96% of the time and all but nine days in those two months have mainly clear skies. During winter though, clouds move in and Sacramento sees sun for less than half of the daylight hours.

Meanwhile on the California coast, the pattern reverses. San Diego, another of the top-ranking US cities for sunshine, gets more sun in winter than in summer.

The major cities included in the weather rankings represent the metropolitan areas in the United States with over one million people in 2010.

Average annual sunshine in the sunniest major US cities.
City % Sunshine Hours of Sun Clear Days
Phoenix, Arizona 85 3872 211
Las Vegas, Nevada 85 3825 210
Sacramento, California 78 3608 188
Los Angeles, California 73 147
Miami, Florida 70 3154   74
Denver, Colorado 69 3107 115
Oklahoma City, Oklahoma 68 3089 139
San Diego, California 68 3055 146
Salt Lake City, Utah 66 3029 125
San Francisco, California 66 160
Tampa, Florida 66 2927 101

% sunshine is the percentage of time between sunrise and sunset that sun reaches the earth's surface.
Clear days is the number days a year when clouds cover less than one-third of the sky on average.

References

NOAA National Climatic Data Center. Comparative Climatic Data Publication.

World Data Center for Meteorology. Climate of the World.

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AMERICAN WEATHER