Maple seeds have been swirling everywhere this spring. Find out what it means and the science behind their flight!

The calendar says fall begins on one date. Meteorologists say another. But trees, birds, butterflies, and frost may tell an entirely different story. Here are the three ways autumn really begins—and how to tell when fall has arrived where you live.

Can you really balance an egg only on the fall equinox? Discover the surprising truth behind the famous equinox egg-balancing myth and try it yourself.

When will the first snowfall happen where you live? See our U.S. first snow map and typical first snowfall timing from September through winter.

Have you noticed your lawn suddenly soaking wet every September morning even though it hasn't rained? Longer nights, cooler temperatures, and lingering late-summer moisture create ideal conditions for heavy morning dew.

The next full Moon is September’s Harvest Moon on Saturday, September 26, 2026. Find the exact time, why it’s called the Harvest Moon, and the best time to see it.

What animal falls on your birthday? Farmers’ Almanac has assigned a Birth Animal to every day of 2026. Find your birthday, discover your animal, and compare Birth Animals with family and friends.

Does the night sky suddenly look brighter? September’s earlier darkness, changing weather, Moon phase, and improving atmospheric transparency can reveal stars that were hiding in plain sight all summer.

Your old knee starts aching even though the sky is still dry. Hours later, the rain arrives. Coincidence? Research suggests some people really may feel atmospheric changes before a storm.

That crisp September morning followed by an 80-degree afternoon isn’t unusual. Here’s why fall often arrives overnight before it shows up during the day.