| A graphic from Climate Central shows how winters in Burlington, Vermont have gotten shorter in recent decades. This winter is an exception to the trend. |
But this long winter is an exception. Winters overall have been getting shorter, thanks to climate change.
Climate Central waded through data from 245 American cities and found that in 195 of those cities, the coldest part of winter is on average nine days shorter than winters were between the years 1970 and 1997.
Here's how the study worked, according to Climate Central:
"This analysis defined winter as the coldest 90 consecutive days of the year during the past (1970-1997) and then compared the frequency of those winter-like temperatures during the most recent 28-year period (1998-2025)."
Juneau and Anchorage, Alaska have seen winters shrink the most, by 62 and 49 days respectively. That makes sense, since warming is much faster in northern latitudes and the Arctic. I would note that like here in Vermont, Juneau and Anchorage are bucking the trend this winter as it's been unusually cold and snowy this winter in Alaska. At least compared to recent winters.
Climate Central's analysis included Burlington, Vermont, where winters are 17 days shorter than they once were.
In 1970-1997, the coldest 90 days pf winter on average started on December 9 and ended March 8. Now, the period with those coldest temperatures only goes from December 20 to March 2.
Not everyone is experiencing shorter winters.
Reflecting the fact that in some cases, regular variability and other factors besides climate change can keep winters relatively long. A few cities in the Ohio Valley have winters as long now as the once were. So, too in parts of California, though the ocean's influence there limits large seasonal temperature swings.
Even if you like these shorter winters, there are downsides to these milder seasons.
As Climate Central notes, warmer, shorter winters can reduce mountain snowpacks, especially in the western U.S. That can lead to summer water shortages and an increased risk of wildfires.
Sometimes, a lack of winter chill prevents fruit and nut trees and plants from getting enough of a cold cycle to adequately produce crops int the following growing season. Warm winters can also prevent pests like ticks from dying off. A shorter winter could also mean the spring allergy season might last longer.
Here in Vermont, as noted, we have had a long, cold winter, bucking the trend Climate Central has outlined. But the trend toward shorter, warmer winters will continue. A season like the winter of 2025-26 will keep getting increasingly rare.
