You may have noticed that meteorologists and climatologists define seasons differently from “regular” or astronomical spring, summer, fall, and winter. So, why do meteorological and astronomical ...

There was a time when the American calendar felt more predictable. Summer meant long, dry heat that broke in September.

The annual clock of the seasons—winter, spring, summer, autumn—is often taken as a given. But our new study in Nature, using a new approach for observing seasonal growth cycles from satellites, shows ...

Add Yahoo as a preferred source to see more of our stories on Google. Fall arrives on Sept. 22 in Michigan as we reach the equinox — the halfway point between the summer and winter solstices. The fall ...

After years of little snow across the Chicago area, recent record-breaking snowfall and below-freezing temperatures might seem to contradict scientific reports of winters getting warmer. But climate ...

Pumpkin spice, cooler nights, football weekends and clock changes: fall is on the horizon. But the official start of autumn isn’t about lattes or leaf piles. It comes down to astronomy. When does fall ...

Summer is not only getting hotter, but also longer and more intense across much of the world, says a new study published in ...

When will spring get here? That depends on which "spring" you're referring to: astronomical or meteorological.