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.
The Wall Street Journal reported that the company is aiming to go public as soon as September.
From MarketWatch • May 24, 2026
Jay Hatfield, chief executive at Infrastructure Capital Advisors, pointed to overall seasonal risks, noting that May and September have historically been weaker months for stocks.
From MarketWatch • May 23, 2026
The inclusion of Zendejas on the roster was a bit of a surprise since his last appearance with the national team came in September but he has played well with América this season.
From Los Angeles Times • May 23, 2026
Big Weekend marked the first festival she's played since collapsing on stage at New York's All Things Go last September.
From BBC • May 23, 2026
As he breathed, his nostrils expanded and contracted and his nose glistened, cold and wet in the warm, sunshiny September afternoon.
From Each Little Bird That Sings by Deborah Wiles
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.
