Record 24 Hour Precipitation Amounts in Sioux Falls, SD

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PRECIPITATION RECORDS AT SIOUX FALLS

The following are the official top ten heaviest 24-hour precipitation events
on record for Sioux Falls

1. 5.67 inches Aug 6-7th 2022

2. 5.07 inches Sep 19-20th 2018

3. 4.67 inches June 20-21st 2024
4. 4.65 inches Jun 14-15th 2014
5. 4.59 inches Aug 1st 1975
6. 4.54 inches Oct 9th 1973
7. 4.40 inches Jun 20-21st 2018
8. 4.35 inches May 29-30th 2004
9. 4.32 inches Jun 16-17th 1957
10. 4.13 inches Jun 6th 1896

The following are the greatest 24-hour precipitation events by month for
Sioux Falls (in inches melted and by date)

Jan   1.61   1-2nd 1960
Feb   2.00   17-18th 1962
Mar 3.27 31st 2007
Apr   3.72   22nd 2001
May   4.35   29-30th 2004
Jun   4.67 20-21st 2024
Jul   3.35   1st 1992
Aug 5.67 6-7th 2022
Sep   5.07   19-20th 2018
Oct   4.54   9th 1973
Nov   2.68   23-24th 2001
Dec   1.44   2-3rd 1955

Note that the most rain ever recorded within the city of Sioux Falls was
7.52 inches in parts of southwest Sioux Falls between 5 pm and 10 pm on
August 27, 2015. Generally 4 to 8 inches fell over most of the southern half
of Sioux Falls, with considerable flash flooding across the southern portions
of the city. There was also 7.50 inches in a small part of southwest Sioux
Falls between 4 am and 8 am on June 16th in 2004. Southwest Sioux Falls was also
the target with 7.46 inches 4 PM and 7 PM on May 22nd 1993, which resulted in
some of the worst flash flooding in Sioux Falls history.

Updated Nov '24

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