Winters have gotten 3.9°warmer since 1970.
Winters have gotten 3.9°warmer since 1970.
2025 Winter Package | Climate Central
Winters have warmed by 3.9°F on average across 239 U.S. cities since 1970. Warmer, shorter winters have lingering effects on health, water supplies, and agriculture throughout the year.
Winter is the fastest-warming season for most of the U.S. — affecting snowfall, water supplies, winter sports, spring allergies, summer fruits, and more. In our warming world, the coldest days aren’t as cold and cold snaps are shrinking.
From 1970 to 2025, winters have warmed in 98% of 244 U.S. cities analyzed — by 3.9°F on average. Most cities (88%) now experience at least seven more warmer-than-normal winter days than they did in the early 1970s. Locations across the Northeast and the Great Lakes region have seen some of the highest rates of winter warming: