Total Cloudy and Foggy Days at US Cities in August





The table below gives averages for how many days in August that major cities in the United States have cloud and fog.

The figure for cloud counts the days when cloud covers at least 80 percent of the sky during daylight hours. The number averages measurements for most of the years that each city's main weather station has collected data.

The totals listed for foggy days includes days with mist. This monthly average is based on weather data collected from 1961 to 1990.

Average number of days in August with cloud or fog
City Cloud Fog
Atlanta, Georgia 10 18
Austin, Texas 5 5
Baltimore, Maryland 11 15
Birmingham, Alabama 10 17
Boston, Massachusetts 11 13
Buffalo, New York 12 17
Charlotte, North Carolina 11 19
Chicago, Illinois 11 11
Cincinnati, Ohio 11 20
Cleveland, Ohio 11 16
Columbus, Ohio 11 20
Dallas, Texas 6 3
Denver, Colorado 8 3
Detroit, Michigan 11 16
Hartford, Connecticut 13 17
Houston, Texas 8 15
Indianapolis, Indiana 10 19
City Cloud Fog
Jacksonville, Florida 11 18
Kansas City, Missouri 8 11
Las Vegas, Nevada 3 0
Los Angeles, California 5 6
Louisville, Kentucky 9 16
Memphis, Tennessee 7 9
Miami, Florida 11 1
Milwaukee, Wisconsin 10 14
Minneapolis, Minnesota 10 8
Nashville, Tennessee 9 17
New Orleans, Louisiana 10 16
New York, New York 10 12
Oklahoma City, Oklahoma 7 4
Orlando, Florida 11 10
Philadelphia, Pennsylvania 11 16
Phoenix, Arizona 4 0
Pittsburgh, Pennsylvania 13 21
City Cloud Fog
Portland, Oregon 10 6
Providence, Rhode Island 12 17
Raleigh, North Carolina 11 24
Richmond, Virginia 12 21
Rochester, New York 12 14
Sacramento, California 1 1
Salt Lake City, Utah 4 0
San Antonio, Texas 6 5
San Diego, California 4 6
San Francisco, California 3 4
Seattle, Washington 12 11
St. Louis, Missouri 10 14
Tampa, Florida 11 9
Virginia Beach, Virginia 11 16
Washington, DC 12 11
References

NOAA National Climatic Data Center. Comparative Climatic Data Publication.

World Data Center for Meteorology. Climate of the World.

US City Cloud
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