Average Temperatures for Large US Cities in September





Average temperatures for the month of September in the largest US cities are listed below in degrees Fahrenheit and Celsius.

The tables give the normals for maximum and minimum temperatures based on weather data collected from 1981 to 2010 by the NOAA National Climatic Data Center of the United States.

Average high temperatures for major US cities during September range from 70 degrees Fahrenheit (21 degrees Celsius) in San Francisco to 100 F (38 C) in Phoenix. Temperatures this month are especially comfortable in cities such as New York and Philadelphia where the days are usually around 75 F (24 C) and the nights average about 60 F (16 C).

Average September temperatures for US cities.
High °F Low °F City High °C Low °C
82 65 Atlanta, Georgia 28 18
91 69 Austin, Texas 33 21
78 58 Baltimore, Maryland 26 14
85 64 Birmingham, Alabama 30 18
72 57 Boston, Massachusetts 22 14
71 53 Buffalo, New York 22 12
81 60 Charlotte, North Carolina 27 16
75 54 Chicago, Illinois 24 12
79 55 Cincinnati, Ohio 26 13
74 56 Cleveland, Ohio 23 13
77 57 Columbus, Ohio 25 14
89 69 Dallas, Texas 32 21
77 48 Denver, Colorado 25 9
74 55 Detroit, Michigan 23 13
75 53 Hartford, Connecticut 24 12
90 70 Houston, Texas 32 21
78 56 Indianapolis, Indiana 25 13
High °F Low °F City High °C Low °C
87 70 Jacksonville, Florida 31 21
80 61 Kansas City, Missouri 27 16
94 71 Las Vegas, Nevada 34 22
83 63 Los Angeles, California 28 17
82 61 Louisville, Kentucky 28 16
85 65 Memphis, Tennessee 30 18
89 77 Miami, Florida 32 25
71 55 Milwaukee, Wisconsin 22 13
72 52 Minneapolis, Minnesota 22 11
82 61 Nashville, Tennessee 28 16
88 72 New Orleans, Louisiana 31 22
75 61 New York, New York 24 16
85 63 Oklahoma City, Oklahoma 29 17
90 73 Orlando, Florida 32 23
78 60 Philadelphia, Pennsylvania 26 16
100 75 Phoenix, Arizona 38 24
74 54 Pittsburgh, Pennsylvania 24 12
High °F Low °F City High °C Low °C
75 52 Portland, Oregon 24 11
74 55 Providence, Rhode Island 23 13
82 61 Raleigh, North Carolina 28 16
81 60 Richmond, Virginia 27 16
92 61 Riverside, California 34 16
72 52 Rochester, New York 22 11
87 56 Sacramento, California 31 13
79 53 Salt Lake City, Utah 26 12
90 69 San Antonio, Texas 32 21
76 65 San Diego, California 24 18
70 55 San Francisco, California 21 13
80 57 San Jose, California 27 14
71 53 Seattle, Washington 22 12
80 61 St. Louis, Missouri 27 16
89 75 Tampa, Florida 32 24
79 65 Virginia Beach, Virginia 26 19
80 62 Washington, DC 26 17
Reference

National Climatic Data Center. NOAA's 1981-2010 Climate Normals.

US City Temperatures
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