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The greatest amount of precipitation that fell in a 24-hour period was 9.35 in (237.5 mm) on August 13–14, 1987. That event also set the records for heaviest 6 and 12 hour rainfall amounts and contributed to August 1987's record rainfall. The heaviest calendar day snowfall was 18.6 in (47.2 cm), again at O'Hare, on January 2, 1999. [18]
Climate data for Chicago (O'Hare Int'l Airport), 1991–2020 normals, [a] extremes 1871–present [b]Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Record high °F (°C)
National Weather Service Chicago, currently based in Romeoville, Illinois, at Lewis University, is a weather forecast office responsible for monitoring weather conditions for 23 counties in Northern Illinois, the Chicago metropolitan area and Northwest Indiana. [1]
Chicago's O'Hare International Airport issued a ground stop on Friday, pausing departures amid snowy and icy conditions as airports around the country grappled with inclement weather.
According to the latest climate outlook from NOAA, the answer if wintry weather will return is a bit complicated, as several atmospheric oscillations, which influence everything from moisture ...
Infrared imagery via @NOAA's #GOESEast (GOES-16) satellite is showing a major #WinterStorm that has been moving from the central Plains and is now bringing heavy snow and freezing rain across the ...
Chicago's yearly precipitation averages about 39 inches (990 millimeters). Summer is typically the rainiest season, with short-lived rainfall and thunderstorms more common than prolonged rainy periods. [4] Winter precipitation tends to be more snow than rain. Chicago's snowiest winter on record was that of 1978–79, with 89.7 inches (227.8 cm ...
Millions of people across 30 states will be under winter weather alerts through Monday as the storm rages across the country, according to NBC News.Cities such as St. Louis, Washington, D.C., and ...