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Friday, January 1, 2010

CHICAGO SNOWFALL RECORDS

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)kkk


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

GreatestLeast
January42.5 inches (1918)0.2 inches (1928)
February27.8 inches (1896)Trace (1998, 1987)
March23.1 inches (1926)Trace (2000, 97, 94, 21, 1910)
April13.6 inches (1938)Zero (Numerous Years)
May2.2 inches (1940)Zero (Numerous Years)
JuneTrace (1910)Zero (Numerous Years)
SeptemberTrace (1942, 1928)Zero (Numerous Years)
October6.3 inches (1989)Zero (Numerous Years)
November14.8 inches (1940)Zero (1999, 2001)
December33.3 inches (1951)Trace (December 1912, 1889)

SOURCE:
http://www.crh.noaa.gov/lot/winter/chi_snow_statistics.php

See also ...
Snow Probability Forecasts
http://www.hpc.ncep.noaa.gov/wwd/winter_wx.shtml

CHICAGO O'HARE CURRENT AND HISTORY (3-DAY) ...


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