Today's 3.4" of snow in Chicago shatters daily record for Oct 31st of 0.1" set back in 2014. This is also now the 2nd heaviest Oct calendar snowfall behind 3.8" back on 10/19/1989. Oct 2019 monthly snowfall up to 4.6" which is now 2nd snowiest Oct in Chicago behind 6.3" in 1989!

— NWS Chicago (@NWSChicago) October 31, 2019