100 Degree Days or Higher in Sioux Falls, SD

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100 Degree Temperatures or Higher in Sioux Falls, SD

Weather records for Sioux Falls, South Dakota commenced in 1893 and
continue to the present day.

The maximum temperature has reached 100 degrees or higher during
the months of May through September on 227 occasions. This event
occurred in 63 of 130 years, slightly less than one half (48.5%) of
the years on record.

Monthly Data

100 degrees or higher occurs most often in July. Breakdown by month
follows:

May	3 days
June	31 days
July	136 days
August	46 days
September	11 days

Annual Data

Occurrence of 100 degree or higher temperatures was most frequent
in 1936. The top 10 years for frequency of occurrence were:

1936	21 days
1988	14 days
1894	12 days
1934	10 days
2012	9 days
1974	8 days
1947	7 days
1941	7 days
1931	7 days
1930	7 days

Decadal Data

100 degrees or higher occurred most often during the decade from 1930-1939.
The breakdown by decades follows:

1893-1899 (partial decade)	19 days
1900-1909	9 days
1910-1919	12 days
1920-1929	8 days
1930-1939	58 days
1940-1949	22 days
1950-1959	13 days
1960-1969	10 days
1970-1979	31 days
1980-1989	23 days
1990-1999	6 days
2000-2009	3 days
2010-2019	9 days
2020-	4 days

Record Data

The highest temperature on record for Sioux Falls is 110 degrees,
reached on July 17, 1936 and June 21, 1988.

Highest temperatures recorded in each month from May through September:

May 104 on May 30, 1934
June 110 on June 21, 1988
July 110 on July 17, 1936
August 109 on August 24, 1936
September 104 on September 4, 1913
September 5, 1913
September 6, 1913
September 6, 1922
September 6, 1976

The earliest occurrence of 100 degrees or higher was on May 25, 1967
(100 degrees).

The latest occurrence of 100 degrees or higher was on September 19, 1895
(103 degrees).

The records for consecutive days of 100 degrees or higher:

9 days July 9 through July 17, 1936

6 days July 19 through July 24, 1934

5 days July 16 through July 20, 1926

4 days June 18 through June 21, 1988
July 22 through July 25, 1941
July 26 through July 29, 1935
June 27 through June 30, 1931

3 days July 5 through July 7, 1988
August 26 through August 28, 1973
July 17 through July 19, 1940
July 4 through July 6, 1936
July 9 through July 11, 1930
September 4 through September 6, 1913
June 24 through June 26, 1911
July 22 through July 24, 1901
July 21 through July 23, 1894

updated Jun '23

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