Total Cloudy and Foggy Days at US Cities in April





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