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
Derived 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.
In an interview with The Times, Farage said "if you represent working people in this country, my door is open" and invited unions to attend his party's conference in September.
From BBC • Jun. 9, 2026
An upward move this week would mark the first hike since September 2023, after Russia’s full-scale invasion of Ukraine beginning in February of the previous year drove an energy-price spike.
From MarketWatch • Jun. 9, 2026
Investors expect the ECB to raise borrowing costs at the same time after inflation picked up in May to its highest level since September 2023.
From The Wall Street Journal • Jun. 9, 2026
Shares are up nearly 80% since Andrew argued in September 2025 that shares were too cheap given the premium valuation that should be placed on the Knicks.
From Barron's • Jun. 8, 2026
This photograph from September 1862 was taken by Alexander Gardner, who worked for Mathew Brady in documenting the Civil War.
From "American Spirits" by Barb Rosenstock
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.
