Total Cloudy and Foggy Days at US Cities in March





The table below gives averages for how many days in March 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 March with cloud or fog
City Cloud Fog
Atlanta, Georgia 15 12
Austin, Texas 15 12
Baltimore, Maryland 14 10
Birmingham, Alabama 16 14
Boston, Massachusetts 15 12
Buffalo, New York 19 15
Charlotte, North Carolina 14 12
Chicago, Illinois 18 12
Cincinnati, Ohio 19 12
Cleveland, Ohio 20 14
Columbus, Ohio 19 12
Dallas, Texas 14 9
Denver, Colorado 13 7
Detroit, Michigan 18 13
Hartford, Connecticut 16 12
Houston, Texas 18 18
Indianapolis, Indiana 18 14
City Cloud Fog
Jacksonville, Florida 13 17
Kansas City, Missouri 16 12
Las Vegas, Nevada 9 0
Los Angeles, California 11 7
Louisville, Kentucky 18 11
Memphis, Tennessee 17 10
Miami, Florida 8 4
Milwaukee, Wisconsin 17 13
Minneapolis, Minnesota 17 10
Nashville, Tennessee 16 11
New Orleans, Louisiana 15 18
New York, New York 12 11
Oklahoma City, Oklahoma 13 10
Orlando, Florida 12 15
Philadelphia, Pennsylvania 15 12
Phoenix, Arizona 8 1
Pittsburgh, Pennsylvania 20 13
City Cloud Fog
Portland, Oregon 23 9
Providence, Rhode Island 15 13
Raleigh, North Carolina 14 13
Richmond, Virginia 15 12
Rochester, New York 18 10
Sacramento, California 12 9
Salt Lake City, Utah 16 3
San Antonio, Texas 15 13
San Diego, California 11 8
San Francisco, California 13 8
Seattle, Washington 22 13
St. Louis, Missouri 16 14
Tampa, Florida 10 13
Virginia Beach, Virginia 15 12
Washington, DC 15 10
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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