The fall season officially begins on Monday, Sept. 22, 2025, with the autumnal equinox. An equinox occurs when the Earth's axis is tilted neither toward nor away from the sun, resulting in nearly ...

September's (sporadic) sweater weather chill and the changing leaf colors are a sign that the first day of fall is near. Here's what to know about the autumnal equinox and fall foliage forecast map ...

During an equinox, places around the globe experience nearly equal amounts of daytime and nighttime. The second occurrence this year happens on Monday. By Katrina Miller Sept. 19, 2025: This article ...

On Sept. 22, the autumnal equinox, which signals the start of fall in the Northern Hemisphere, finally brings an end to our long, hot summer on Monday at 2:19 p.m. EDT. This happens at a precise ...

This year's autumnal equinox arrives on Sept. 22, marking the first day of fall in the northern hemisphere As summertime comes to a close, the autumnal equinox reminds us that every ending is also the ...

September's sweater-weather chill and the changing leaf colors are a sign that the first day of fall is here. Here's what to know about the autumnal equinox, fall foliage forecast map for 2025, and ...