2020-2021 Winter Events and an Active Three Weeks in Perspective

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July 2025 Climate Summary

Stats and visualizations of the active winter stretch in Chicago from late January through mid-February

Snowiest three weeks since 1979	Chicago O'Hare snowfall accumulation	Chicago O'Hare frequently low visibility
This winter also experienced nine consecutive days (Feb 8-16) with measurable snowfall in Chicago, tying the record for the most with February 3-11, 2018. This winter had the longest stretch of a foot or more of snow cover since the 1978-79 winter for both Chicago (15 days) and Rockford (19 days). This also was the longest stretch of 4+" of snow cover at Rockford since the 1978-79 winter.

Winter 2020-2021 Events

February 14-16, 2021: Heavy snow including lake effect brings a foot plus to all of the city of Chicago; caps off record three weeks

February 12-13, 2021: Widespread 2-4" with lake enhanced in northwest Indiana up to 8"

February 8-9, 2021: Multiple light to moderate snow events bring 2-5"

February 4-5, 2021: Wind gusts over 40 mph bring widespread blowing snow and whiteout conditions at times

January 30-31, 2021: Widespread 6-13" of snow brings Chicago its largest snow event in five years

January 25-26, 2021: Snow event brings 5 to 8 inches of snow to parts of the I-88 corridor and Chicago

January 19, 2021: Snow squall moves over part of the Chicago area producing intense snowfall rates

January 3-5, 2021: Multiple days with rime ice, hoar frost, and "smoke stack" snow

January 1, 2021: Wintry system brings up to 3" of snow for the Chicago metro and over 1/4" of ice accumulation farther south

December 29-30, 2020: Snow and ice event, with 6" to 8" in Winnebago County

November 24, 2020: First measurable snow of the winter season for many with totals up to 3"

NWS Chicago Past Events Page

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