September
Americannoun
noun
Usage
What is September? September is the ninth month of the year in the Gregorian calendar. It has 30 days and is between August and October. In the Northern Hemisphere, September is known as the first month of the autumn season, while in the Southern Hemisphere, it’s the first month of the spring season. Much of the world celebrates International Workers Day in May, but in the United States and Canada, a similar celebration, called Labor Day, is held. It is celebrated on the first Monday of September. The Jewish holiday Rosh Hashanah, which marks the beginning of the year, is normally held in September. The holiday’s exact date changes because it is set according to the Hebrew calendar, which is based on the Moon’s cycle. Example: For many people, September is a calm month before the holidays in October, November, and December.
Other Word Forms
Etymology
Origin of September
First recorded before 1050; Middle English Septembre, Old English, from Latin September “seventh month” in the early Roman calendar; for formation see December
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Shares of Smucker are down 14% since the day the deal was announced in September 2023.
From The Wall Street Journal • Jul. 8, 2026
Renovated historic buildings and a purpose-built 17-storey student boarding centre will open in Cardiff Bay in September 2026.
From BBC • Jul. 7, 2026
While July might be too soon for a rate increase, according to Bullard, he thinks a “tightening cycle” could be afoot starting in September, meaning more than one single hike.
From MarketWatch • Jul. 7, 2026
SuperC's research will be featured in Aalto University's Designs for a Cooler Planet exhibition from September 1 to October 30, 2026, in Greater Helsinki, Finland.
From Science Daily • Jul. 7, 2026
In the Middle East, the Turks had suffered a series of defeats by the British, who captured Baghdad in March 1917 and Palestine in September 1918.
From "The War to End All Wars: World War I" by Russell Freedman
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
