Autumn Equinox 2021 Timing, Weather and More for First Day of Fall in Illinois

Autumn Equinox 2021: Timing, Weather and More for First Day of Fall in Illinois

The start of the new season will officially begin on Wednesday, when the temperature drops again in the Chicago area. On 22Sep , the first day of fall, it is 21 degrees Celsius. The autumnal equinox, also known as the September or fall equinox, arrives at 2:21 p.m. Wednesday in the Northern Hemisphere, according to …

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