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
| 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) |
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) ...
Arlingtoncardinal.com/weather
LIVE RADAR | STORM TRACKS | CLOUDS INFRARED SAT | CLOUDS VISIBLE SAT (during daylight)
WunderMap® with Temperature/Wind Data || Google: O'Hare Temps | NE Illinois Temps
Full Screen Motion Weather Radar (Wunderground.com) Midwest Cloud Cover and Arlington Heights Weather Forecast
SUNLIGHT DATA FOR SECURITY, TRAFFIC SAFETY, AND SPORTS
SunCalc.net data with azimuth & trajectory, times for dawn, sunrise, solar noon, sunset, dusk ...
