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
- Septembral adjective
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.
Chirkinian is scheduled to return to court in September for a preliminary hearing.
From Los Angeles Times • Apr. 18, 2026
There was an emotional memorial in her honor near her home in September.
From Los Angeles Times • Apr. 17, 2026
Cerebras first filed for an IPO in September 2024 before withdrawing its filing about a year later, according to the Journal.
From The Wall Street Journal • Apr. 17, 2026
Arriving by helicopter on 11 September, his team searched a series of compounds near a dry creek bed, capturing three detainees, the court documents say.
From BBC • Apr. 17, 2026
She’d left school in June with ho-hum hair and returned in September with Oh My Goddess! without layers or fancy highlights.
From "Legendary Frybread Drive-In" by Cynthia Leitich Smith
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.
