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Get the Chicago, IL local weather forecast by the hour and the next 10 days.
Get the Morton Grove, IL local weather forecast by the hour and the next 10 days.
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The maximum frost depth observed in the contiguous United States ranges from 0 to 8 feet (2.4 m). [1] Below that depth, the temperature varies, but is always above 0 °C (32 °F). Alternatively, in Arctic and Antarctic locations the freezing depth is so deep that it becomes year-round permafrost , and the term " thaw depth " is used instead.
In 1931 the Peoria Weather Bureau began 24-hour operations, and in the following years the office began direct radio broadcasts, through local radio station WMBD. [2] As the aviation industry grew a Weather Bureau Airport Station (WBAS) was opened at the Peoria Municipal Airport, initial observations included temperature, wind and rain readings. [7]
The National Weather Service office of Chicago has one of the longest periods of official weather records, dating back to 1870, though all the 1870 and 1871 weather records taken at 181 West Washington Street were lost in the Great Chicago Fire. Of the two major airports located in Chicago, Midway Airport began observations in 1928, and O'Hare ...
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Illinois averages around 50 days of thunderstorm activity a year which put it somewhat above average for number of thunderstorm days for the United States. Illinois is vulnerable to tornadoes with an average of 54 occurring annually, which puts much of the state at around 9.7 tornadoes per 10,000 square miles (30,000 km 2) annually. [2] [3] The ...