September Average Weather in Each U.S. State

This page compares the average temperature and precipitation in September in all fifty U.S. states. It is based on the average temperature over the entire territory of the state between 1991–2020.
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City High (°F) Low (°F) Precipitation (in)
Alabama 86.0 63.6 4.1
Alaska 48.3 34.5 5.0
Arizona 87.9 59.2 1.2
Arkansas 84.5 61.5 3.7
California 85.2 55.9 0.3
Colorado 73.6 44.2 1.5
Connecticut 73.9 52.9 4.4
Delaware 79.0 59.1 4.2
Florida 89.0 71.0 6.5
Georgia 85.4 64.1 4.1
Hawaii [1] 83.8 69.8 2.8
Idaho 71.2 41.6 1.1
Illinois 78.5 55.0 3.4
Indiana 77.9 54.1 3.3
Iowa 75.4 51.9 3.5
Kansas 81.9 55.8 2.5
Kentucky 80.7 57.0 3.6
Louisiana 88.2 67.4 4.5
Maine 68.0 45.8 3.7
Maryland 78.4 58.1 4.3
Massachusetts 73.0 51.7 4.2
Michigan 71.1 48.8 3.2
Minnesota 69.8 47.4 3.1
Mississippi 86.8 64.1 3.8
Missouri 79.8 56.6 3.9
Montana 69.9 41.5 1.4
Nebraska 77.6 49.9 2.1
Nevada 79.4 47.6 0.5
New Hampshire 70.0 46.8 4.0
New Jersey 77.2 56.6 4.2
New Mexico 80.4 51.1 1.8
New York 71.1 49.7 4.0
North Carolina 81.0 60.6 5.3
North Dakota 71.1 44.7 1.9
Ohio 76.6 53.6 3.3
Oklahoma 85.1 60.7 3.3
Oregon 74.1 44.3 1.0
Pennsylvania 73.8 51.7 4.3
Rhode Island 73.8 54.2 4.1
South Carolina 84.5 63.9 4.5
South Dakota 75.2 47.8 1.9
Tennessee 82.0 58.8 3.9
Texas 88.2 64.4 3.1
Utah 76.7 47.8 1.2
Vermont 69.0 46.6 3.9
Virginia 78.6 57.2 4.4
Washington 70.8 46.1 1.7
West Virginia 76.5 53.6 3.7
Wisconsin 70.6 48.4 3.6
Wyoming 70.3 40.4 1.3