Snow cover in North America is on the decline in part due to climate change.
See how snowfall is trending in these U.S. cities.
Warmer winters have consequences, including for our winter fun.
See the trend in winter high temperatures across the U.S.
Halloween weather can be highly variable depending on the year.
The annual Arctic sea ice minimum extent has been below average every year since 2002.
Climate change has delayed the date of the annual Arctic sea ice minimum.
The rapidly warming Arctic is already impacting Alaska, as earlier ice breakups on the Tanana River are more likely.