Hot dates aren’t just for Valentine’s Day. Here’s a state-by-state look at how February temps have warmed since 1970.
All regions of the continental U.S. have seen the frost-free season, defined as the stretch between the last below-32°F reading in the spring and the first in the fall, grow longer.
The relentless heat that has plagued the western half of the country this summer has ratcheted up California’s terrible drought once again.
The contiguous U.S. has warmed 2.1°F since the first Earth Day in 1970.
While this has been a snowy winter, the past 50 years have shown a trend of less overall spring snow cover in the Northern Hemisphere.
Spring is arriving earlier across the U.S. by an average of three days.
If it seems like autumn leaves are taking longer to change color, you're not imagining things. Over the past 25 years, the onset of autumn has shifted.
A look at which states were hit hardest by extreme climate and weather events in 2011.