Sioux Falls May 21 Weather Records

Daily averages and all-time records for weather in Sioux Falls, South Dakota for the date of May 21.

May 21 All-Time Records
1932–2024

93 °F

33 °F

50 °F

Highest daily low

68 °F

1.71 inches

Most snow

none

May 21 Average Weather
1991–2020 ¹

Average high

71.3 °F

Average low

48.7 °F

Chance precipitation

40.6%

Chance snow

Year	High (°F)	Low (°F)	Precip. (inches)
2023	84	46	0.00
2022	53	37	0.00
2021	84	63	0.00
2020	70	58	0.00
2019	52	46	0.96
2018	68	53	0.13
2017	60	36	0.01
2016	73	44	0.00
2015	75	42	0.00
2014	72	46	0.00
2013	61	51	0.03
2012	74	45	0.00
2011	74	54	0.62
2010	74	55	0.00
2009	62	52	0.07
2008	73	35	0.00
2007	83	65	0.00
2006	64	48	0.03
2005	81	55	0.21
2004	78	57	0.51
2003	67	35	0.00
2002	71	42	0.00
2001	55	43	0.01
2000	78	47	0.00
1999	73	48	0.00
1998	74	56	0.00
1997	73	41	0.00
1996	75	48	0.00
1995	75	44	0.00
1994	83	61	0.00
1993	72	37	0.00
1992	79	65	0.00
1991	83	63	0.00
1990	62	49	0.00
1989	78	48	0.08
1988	69	57	0.27
1987	65	41	0.02
1986	72	42	0.00
1985	74	40	0.00
1984	78	55	0.16
1983	74	48	0.00
1982	56	49	0.02
1981	79	56	0.04
1980	80	43	0.00
1979	65	36	0.00
1978	74	39	0.00
1977	73	58	0.83
1976	86	60	0.13
1975	78	54	0.00
1974	72	52	0.60
1973	89	60	0.00
1972	86	59	0.00
1971	75	50	0.00
1970	88	59	0.00
1969	50	45	0.99
1968	67	34	0.00
1967	69	42	0.00
1966	83	54	0.00
1965	71	52	0.06
1964	93	68	0.00
1963	51	33	0.00
1962	77	55	1.71
1961	74	40	0.00
1960	72	51	0.05
1959	57	44	0.17
1958	81	44	0.00
1957	68	46	0.10
1956	88	54	0.00
1955	88	56	0.00
1954	75	55	0.00
1953	64	43	0.05
1952	72	48	0.00
1951	63	56	0.01
1950	73	48	0.00
1949	58	50	0.73
1948	79	54	0.24
1947	67	37	0.04
1946	73	41	0.00
1945	56	40	0.78
1944	80	56	0.00
1943	78	43	0.00
1942	63	42	1.16
1941	80	49	0.00
1940	73	49	0.00
1939	85	51	0.00
1938	72	47	0.00
1937	73	51	0.00
1936	85	60	0.28
1935	72	48	0.00
1934	83	60	0.00
1933	80	48	0.00
1932	78	55	0.00

What's the all-time high for Sioux Falls on 5/21?

For the date of May 21, the highest temperature ever reached in Sioux Falls history is 93 °F which happened in 1964.

Highest Temperatures in Sioux Falls on May 21

What's the all-time low for Sioux Falls on 5/21?

For the date of May 21, the lowest temperature ever reached in Sioux Falls history is 33 °F which happened in 1963.

Lowest Temperatures in Sioux Falls on May 21

Lowest High Temperatures in Sioux Falls on May 21

What's the most it has ever rained in Sioux Falls on 5/21?

For the date of May 21, the most precipitation ever recorded in Sioux Falls history is 1.71 inches which happened in 1962.

All-Time Most Precipitation in Sioux Falls on May 21

Weather Station Details

Years	Station	Coordinates
1932–2024	Sioux Falls	location