Today Is The First Day of – FALL! 2026

WAIT - today is the first day of fall 2026?

WHERE DID THE YEAR GO? I had so much I wanted to get done.

The first day of astronomical fall in 2026 is Tuesday, September 22, 2026.

Exact Time: The autumnal equinox occurs at 8:05 p.m. EDT (5:05 p.m. PDT).

Astronomical vs. Meteorological: While astronomical fall begins with the equinox on September 22, meteorological fall began earlier on September 1 based on temperature cycles and climate records.

Day and Night: The equinox marks the moment the Sun crosses the celestial equator, giving nearly equal amounts of daylight and darkness worldwide.

This is a good time to start taking road trips up into the high country to have a look at the first of the fall leaves.

bokeh lights photography of brown maple leaf

Yes, the leaves are changing, and the temperatures are getting cooler. Folks are bringing out Halloween decorations. Leaves are slowly changing, and some are starting to fall.

In late September, seasonal temperatures in Casper and central Wyoming feature comfortable daytime highs and cool autumn evenings. Average Late-September Weather. Daytime Highs: Around 75°F (24°C), perfect for outdoor activities. Nighttime Lows: Around 46°F (8°C), making for crisp and chilly nights. Daylight: About 12 hours and 10 minutes of daylight as the fall season settles in. Conditions will be mostly clear skies with low humidity and gentle breezes.

But we all know what is coming. At some point, those gentle breezes are going to give way to Wyoming winds. That's winter trying to force its way in. So enjoy these pleasant days and cool nights while they last. The season change to winter can be brutal in this part of the country.