When is fall? | wbir.com [Video]

WASHINGTON — While the temperatures may not reflect it just yet, fall is officially upon us. 

The autumn equinox, which comes around every September for the Northern Hemisphere, marks the official astronomical start of fall. This year, the equinox arrives Sunday, Sept. 22 at 8:44 a.m. Eastern, according to The Farmers’ Almanac.

However, fall is already in full swing for meteorologists. Unlike the astronomical equinoxes and solstices, fall is based on annual temperature cycles and start on the first of the month. 

When is the first day of fall?

The first day of fall is on Sunday, Sept. 22, 2024, in the Northern Hemisphere. 

What’s the difference between meteorological and astronomical seasons?

These are just two different ways to carve up the year.

Meteorological seasons are defined by the weather. They break down the year into three-month seasons based on annual temperature cycles. By that calendar, spring starts on March 1, summer on June 1, …