Average Relative Humidity in July at US Cities





The average humidity in July is listed here for the largest cities in the United States. The tables below give this month's daily averages along with morning and afternoon relative humidity levels.

Relative humidity measures the actual amount of moisture in the air as a percentage of the maximum amount of moisture the air can hold.

For each city, the Daily number gives the average of humidity readings taken every three hours throughout the day. Morning values are recorded between 4 and 6 am local standard time, when usually temperatures are coolest and humidity highest. Afternoon humidity percentages are readings taken between 3 and 5 pm local standard time, when normally the day's temperature peaks and relative humidity reaches its lowest point. All the figures are averages for the years 1961 to 1990.

Average Relative Humidity (%) in July
Daily CityMorn­ing After­noon
74 Atlanta, Georgia 89 58
65 Austin, Texas 88 44
69 Baltimore, Maryland 84 53
74 Birmingham, Alabama 88 57
68 Boston, Massachusetts 80 58
68 Buffalo, New York 83 54
72 Charlotte, North Carolina 86 55
69 Chicago, Illinois 82 54
72 Cincinnati, Ohio 86 55
70 Cleveland, Ohio 85 56
71 Columbus, Ohio 86 54
60 Dallas, Texas 81 42
48 Denver, Colorado 68 34
69 Detroit, Michigan 85 52
68 Hartford, Connecticut 86 51
74 Houston, Texas 93 55
73 Indianapolis, Indiana 88 56
Daily CityMorn­ing After­noon
78 Jacksonville, Florida 91 64
67 Kansas City, Missouri 84 51
21 Las Vegas, Nevada 29 15
77 Los Angeles, California 86 68
71 Louisville, Kentucky 85 55
69 Memphis, Tennessee 84 54
75 Miami, Florida 86 66
72 Milwaukee, Wisconsin 82 60
65 Minneapolis, Minnesota 80 50
73 Nashville, Tennessee 89 55
79 New Orleans, Louisiana 92 66
64 New York, New York 75 53
61 Oklahoma City, Oklahoma 80 44
78 Orlando, Florida 92 64
70 Philadelphia, Pennsylvania 85 54
32 Phoenix, Arizona 45 20
69 Pittsburgh, Pennsylvania 84 53
Daily CityMorn­ing After­noon
63 Portland, Oregon 80 44
71 Providence, Rhode Island 85 58
76 Raleigh, North Carolina 92 58
75 Richmond, Virginia 91 57
70 Rochester, New York 87 53
53 Sacramento, California 76 28
36 Salt Lake City, Utah 52 22
65 San Antonio, Texas 87 44
75 San Diego, California 82 66
73 San Francisco, California 86 59
65 Seattle, Washington 81 49
68 St. Louis, Missouri 85 52
77 Tampa, Florida 88 65
73 Virginia Beach, Virginia 86 60
67 Washington, DC 80 53
Reference

World Data Center for Meteorology. Climate of the World.

US City Humidity
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