Average Total Rainfall in US Cities During September





The tables below give monthly averages for rainfall during September at the largest cities in the United States.

Each place has a total for the amount of precipitation it usually receives this month along with information on the number of days with wet weather. The count of days includes those when precipitation amounts to 0.01 inches (0.25 millimetres) or more.

The rainfall totals are averages based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

September rainfall averages by city
Days City Inches Milli­metres
7 Atlanta, Georgia 3.8 97
7 Austin, Texas 3.5 88
9 Baltimore, Maryland 4.4 113
7 Birmingham, Alabama 4.0 102
9 Boston, Massachusetts 3.6 90
11 Buffalo, New York 4.1 104
8 Charlotte, North Carolina 3.7 94
8 Chicago, Illinois 3.3 85
8 Cincinnati, Ohio 3.1 79
10 Cleveland, Ohio 3.9 100
9 Columbus, Ohio 3.1 80
6 Dallas, Texas 3.1 79
6 Denver, Colorado 1.5 38
10 Detroit, Michigan 3.2 82
9 Hartford, Connecticut 4.4 112
10 Houston, Texas 5.8 146
8 Indianapolis, Indiana 3.1 80
Days City Inches Milli­metres
12 Jacksonville, Florida 6.1 154
8 Kansas City, Missouri 4.0 103
2 Las Vegas, Nevada 0.3 8
0 Los Angeles, California 0.1 3
8 Louisville, Kentucky 3.7 93
7 Memphis, Tennessee 3.0 77
18 Miami, Florida 10.2 260
9 Milwaukee, Wisconsin 3.2 80
9 Minneapolis, Minnesota 3.0 77
8 Nashville, Tennessee 3.8 97
10 New Orleans, Louisiana 5.1 130
9 New York, New York 4.3 109
7 Oklahoma City, Oklahoma 3.7 94
15 Orlando, Florida 6.6 166
9 Philadelphia, Pennsylvania 4.4 112
3 Phoenix, Arizona 0.6 14
10 Pittsburgh, Pennsylvania 3.3 84
Days City Inches Milli­metres
7 Portland, Oregon 1.7 42
9 Providence, Rhode Island 4.2 106
9 Raleigh, North Carolina 5.2 131
9 Richmond, Virginia 4.6 117
1 Riverside, California 0.1 3
11 Rochester, New York 3.2 81
1 Sacramento, California 0.2 4
5 Salt Lake City, Utah 1.1 27
7 San Antonio, Texas 3.9 99
1 San Diego, California 0.1 3
1 San Francisco, California 0.1 3
1 San Jose, California 0.1 2
8 Seattle, Washington 1.6 41
7 St. Louis, Missouri 3.0 75
13 Tampa, Florida 6.1 155
9 Virginia Beach, Virginia 5.4 137
9 Washington, DC 3.9 100
Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

US City Precipitation
Back to Top