Snowall Statistics for Chicago


First Snowfall

Trace or More
Average Date: October 30th
Earliest: September 25, 1942 (Trace)
  September 25, 1948 (Trace)
Latest: December 5, 1999 (0.1 inches)

Measurable (0.1 inches or more)
Average Date: November 16th
Earliest: October 18, 1989 (0.7 inches)
  October 18, 1972 (0.2 inches)
Latest: December 16, 1965 (0.3 inches)

One Inch or More

Average Date: December 2nd
Earliest: October 19th, 1989 (3.8 inches)
Latest: January 17, 1899 (1.0 inch)


Seasonal Snowfall

Average Snowfall from Fall through Spring (1971-2000):38.0 inches
Least amount of snowfall:9.8 inches (1920-1921 season)
Greatest amount of snowfall:89.7 inches (1978-1979 season)

Monthly Snowfall

  Greatest Least
January 42.5 inches (1918) 0.2 inches (1928)
February 27.8 inches (1896) Trace (1998, 1987)
March 23.1 inches (1926) Trace (2000, 97, 94, 21, 1910)
April 13.6 inches (1938) Zero (Numerous Years)
May 2.2 inches (1940) Zero (Numerous Years)
June Trace (1910) Zero (Numerous Years)
September Trace (1942, 1928) Zero (Numerous Years)
October 6.3 inches (1989) Zero (Numerous Years)
November 14.8 inches (1940) Zero (1999, 2001)
December 33.3 inches (1951) Trace (December 1912, 1889)

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