When does the chance of an overnight freeze drop below 50 percent? Explore this map to find out.
Rebecca Lindsey
Below-average precipitation across the West led to an expansion of drought.
It was the sixth-warmest year on record for planet Earth.
The month brought a warm West and a cold East. Amid widespread dryness, wetter-than-average conditions occurred in Colorado, the Ohio Valley, and the Mid-Atlantic.
It's been 45 years since the planet had a cooler-than-average year.
NOAA National Centers for Environmental Information recaps the 2021 climate for the United States.
A cool, wet January is slightly favored across much of the North, with a warm, dry month favored for the South. Elsewhere, there are even chances for any outcome.
Use this interactive map to browse a collection of animated gifs showing monthly sea level at U.S. tide-monitoring stations over their lifetimes.
The fingerprints of La Niña were all over the global precipitation map.