Snowfall Statistics for the First Snowfall of the Season

 With our first snowfall of the season occurring at both Rockford and Chicago O'Hare, winter is knocking on the door.  Here are some snowfall statistics for the first snowfall of the season for both Chicago and Rockford Illinois.

For the First Snowfall of the Season

Chicago

Trace or More

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

Measurable (0.1 inches or more)
Average Date: November 16th
Earliest: October 12th, 2006 (0.3 inches)
Latest: December 16th, 1965 (0.3 inches)

One Inch or More

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

  


Rockford

Trace or More

Average Date: November 2nd
Earliest: October 3rd, 1951 (Trace) 
Latest: December 19th, 1999 (0.1 inches)

Measurable (0.1 inches or more)
Average Date: November 20th
Earliest: October 12th, 1909 (0.2 inches)
Latest: January 7th, 1940 (1.6 inches)

One Inch or More

Average Date: December 1st
Earliest: October 23th, 1917 (1.0 inches)
October 23th, 1929 (5.0 inches)
Latest: February 7th, 1921 (2.2 inches)



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