Fall Equinox 2026 Arrives on September 22
Fall Equinox 2026 Arrives on September 22
US · Published Sep 17, 2026
The fall equinox, marking the official start of the autumn season, will occur on Tuesday, September 22, 2026, at 8:05 p.m.
ET, according to NASA.

Impact & Risks

The fall equinox signals a shift in weather patterns, with cooler temperatures and shorter days becoming more prominent. This seasonal change can impact agriculture, outdoor activities, and travel plans. In regions where leaves change color, tourism may increase as people seek to enjoy the vibrant autumn scenery. However, the transition to fall also brings the potential for early frosts in some areas, which could affect crops and outdoor vegetation. Residents in colder regions should prepare for the gradual onset of winter conditions in the coming months.

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