Weather
Wisconsin Winter 2026-27: Milwaukee, 55.8-Inch Snow History
WISCONSIN – Milwaukee, Madison, Green Bay and Eau Claire face another winter in which warmer seasonal conditions could coexist with significant snowfall. Wisconsin's historical statewide weather stati
By Rachel Monroe · 2026-10-20T09:57:08.096Z
WISCONSIN – Milwaukee, Madison, Green Bay and Eau Claire face another winter in which warmer seasonal conditions could coexist with significant snowfall. Wisconsin's historical statewide weather station average is approximately 55.8 inches annually, highlighting the state's substantial winter snow potential. Even during El Niño winters, snowstorms, Arctic cold and dangerous travel conditions remain possible through March.
According to the National Oceanic and Atmospheric Administration NOAA , its October 15, 2026, outlook favors above normal temperatures across Wisconsin for December 2026 through February 2027. Probabilities are generally around 40%–60%, depending on location. The precipitation outlook favors below normal totals in portions of northern Wisconsin, while much of the state has equal chances of above , near or below normal precipitation. Neither outlook predicts seasonal snowfall totals.
What Wisconsin's Snowfall History Actually Shows Wisconsin's 55.8 inch historical average represents statewide weather station measurements, not the expected snowfall in Milwaukee or any individual community.
Snowfall varies considerably. Northern Wisconsin communities, including Ashland, Hurley and Superior, can experience substantial lake effect and lake enhanced snowfall near Lake Superior. Milwaukee, Madison and southern Wisconsin generally have different snowfall patterns.
NOAA historical maps covering 1950–2009 show that strong El Niño winters have generally favored below average snowfall across Wisconsin and the broader Upper Midwest.
However, those maps do not establish a comparable statewide El Niño snowfall average or percentage reduction.
Below average snowfall does not mean insignificant snowfall.
Why El Niño Doesn't Guarantee an Easy Winter El Niño influences Pacific Ocean temperatures, atmospheric circulation and jet stream patterns, often shifting winter storm tracks.
Wisconsin remains vulnerable to Arctic air outbreaks, rapidly changing temperatures and powerful low pressure systems crossing the Midwest.
Lake Superior can also generate localized snowfall when cold air moves across relatively warmer water, particularly affecting northern communities.
A winter averaging warmer than normal can still produce heavy snow, freezing rain and dangerous wind chills.
What This Means Through March Travelers along Interstate 94 between Milwaukee, Madison and Eau Claire, Interstate 43 toward Green Bay, and Interstate 90 near Janesville should remain prepared for icy pavement, blowing snow and reduced visibility.
NOAA's December–February outlook does not cover March 2027, when Wisconsin can still experience significant late season snowstorms.
El Niño changes seasonal probabilities, but Wisconsin's winter history shows that warmer conditions do not guarantee a snow free or disruption free season.