Sioux Falls Weather in 2021

Historical record of Sioux Falls, South Dakota weather for the year 2021 based on NOAA data.

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2021 Sioux Falls Weather Extremes
Highest temperature	101 °F	July 28
Lowest temperature	-26 °F	February 15
Highest daily low	76 °F	July 28
Lowest daily high	-9 °F	February 14
Most daily precipitation	3.4 inches	August 28
Most daily snow	9.5 inches	December 10
Total annual precipitation	27.7 inches	-
Total annual snow	32.0 inches	-

What was the hottest temperature in Sioux Falls in 2021?

The highest temperature recorded in Sioux Falls, South Dakota in 2021 was 101 °F which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in Sioux Falls in 2021

Rank	Temperature	Date
1	101 °F	Jul 28
1	101 °F	Jun 5
3	99 °F	Jun 10
3	99 °F	Jun 4
5	97 °F	Jul 5
5	97 °F	Jul 4
5	97 °F	Jun 7
8	96 °F	Jul 27
8	96 °F	Jun 16
8	96 °F	Jun 6

What was the coldest temperature in Sioux Falls in 2021?

The lowest temperature recorded in Sioux Falls, South Dakota in 2021 was -26 °F which happened on Feb 15.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Sioux Falls in 2021

Rank	Temperature	Date
1	-26 °F	February 15
2	-24 °F	February 16
3	-19 °F	February 14
4	-13 °F	February 13
5	-12 °F	February 8
5	-12 °F	February 7
7	-11 °F	February 12
8	-7 °F	February 6
9	-4 °F	December 31
9	-4 °F	February 20
9	-4 °F	February 18
9	-4 °F	February 11
9	-4 °F	February 9

January 2021 Sioux Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	35	4	0.00	0.0
January 2	32	9	0.00	0.0
January 3	31	5	0.00	0.0
January 4	39	17	0.00	0.0
January 5	41	13	0.00	0.0
January 6	38	33	0.33	0.8
January 7	35	28	0.00	0.0
January 8	32	28	0.00	0.0
January 9	33	24	0.00	0.0
January 10	36	30	0.00	0.0
January 11	37	23	0.00	0.0
January 12	43	21	0.00	0.0
January 13	45	25	0.08	0.0
January 14	42	30	0.34	1.5
January 15	31	27	0.04	0.6
January 16	27	22	0.00	0.0
January 17	35	22	0.00	0.0
January 18	32	19	0.01	0.3
January 19	34	13	0.00	0.0
January 20	47	17	0.00	0.0
January 21	37	17	0.00	0.0
January 22	23	9	0.00	0.0
January 23	25	18	0.17	2.0
January 24	23	12	0.00	0.0
January 25	21	10	0.00	0.1
January 26	19	10	0.00	0.0
January 27	22	9	0.00	0.0
January 28	25	15	0.00	0.0
January 29	28	25	0.00	0.0
January 30	30	28	0.00	0.0
January 31	28	25	0.00	0.0

February 2021 Sioux Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	28	22	0.00	0.0
February 2	28	20	0.00	0.0
February 3	42	22	0.03	0.2
February 4	31	12	0.36	3.6
February 5	17	6	0.00	0.0
February 6	7	-7	0.00	0.0
February 7	1	-12	0.03	0.3
February 8	6	-12	0.00	0.0
February 9	9	-4	0.00	0.0
February 10	10	-2	0.00	0.0
February 11	3	-4	0.01	0.1
February 12	-2	-11	0.00	0.0
February 13	1	-13	0.02	0.3
February 14	-9	-19	0.00	0.0
February 15	-2	-26	0.00	0.0
February 16	0	-24	0.00	0.0
February 17	10	-1	0.03	0.9
February 18	20	-4	0.00	0.0
February 19	22	-3	0.00	0.0
February 20	27	-4	0.00	0.0
February 21	34	13	0.12	1.3
February 22	49	21	0.00	0.0
February 23	55	26	0.00	0.0
February 24	41	29	0.00	0.0
February 25	42	23	0.00	0.0
February 26	49	31	0.00	0.0
February 27	45	22	0.03	0.0
February 28	34	20	0.10	0.8

March 2021 Sioux Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	32	17	0.00	0.0
March 2	55	27	0.00	0.0
March 3	62	27	0.00	0.0
March 4	58	29	0.00	0.0
March 5	56	27	0.00	0.0
March 6	56	27	0.00	0.0
March 7	68	35	0.00	0.0
March 8	66	29	0.00	0.0
March 9	73	47	0.00	0.0
March 10	49	29	0.41	0.3
March 11	48	27	0.00	0.0
March 12	54	22	0.00	0.0
March 13	57	25	0.00	0.0
March 14	46	33	0.36	1.8
March 15	33	30	0.57	4.7
March 16	34	30	0.15	1.5
March 17	35	31	0.00	0.0
March 18	42	25	0.00	0.0
March 19	52	20	0.00	0.0
March 20	63	38	0.00	0.0
March 21	62	34	0.00	0.0
March 22	57	30	0.06	0.0
March 23	46	40	1.03	0.0
March 24	50	29	0.00	0.0
March 25	53	24	0.00	0.0
March 26	56	26	0.00	0.0
March 27	50	34	0.05	0.0
March 28	55	24	0.00	0.0
March 29	81	42	0.00	0.0
March 30	44	26	0.00	0.0
March 31	39	18	0.00	0.0

April 2021 Sioux Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	56	16	0.00	0.0
April 2	74	39	0.00	0.0
April 3	76	33	0.00	0.0
April 4	84	48	0.00	0.0
April 5	90	50	0.18	0.0
April 6	66	47	0.25	0.0
April 7	52	46	0.42	0.0
April 8	47	44	0.85	0.0
April 9	54	40	0.11	0.0
April 10	61	38	0.00	0.0
April 11	64	29	0.00	0.0
April 12	52	36	0.00	0.0
April 13	41	31	0.00	0.0
April 14	47	30	0.00	0.0
April 15	49	34	0.00	0.0
April 16	49	39	0.00	0.0
April 17	58	37	0.01	0.0
April 18	68	33	0.00	0.0
April 19	43	28	0.00	0.0
April 20	47	22	0.01	0.1
April 21	50	20	0.00	0.1
April 22	61	32	0.05	0.0
April 23	60	39	0.00	0.0
April 24	53	32	0.00	0.0
April 25	61	35	0.17	0.0
April 26	76	46	0.00	0.0
April 27	61	44	0.02	0.0
April 28	71	40	0.00	0.0
April 29	72	41	0.00	0.0
April 30	74	43	0.00	0.0

May 2021 Sioux Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	93	59	0.00
May 2	72	54	0.00
May 3	66	45	0.00
May 4	62	32	0.00
May 5	49	36	0.08
May 6	67	30	0.00
May 7	64	36	0.00
May 8	48	41	0.40
May 9	61	41	0.00
May 10	62	38	0.00
May 11	62	29	0.00
May 12	67	40	0.00
May 13	69	47	0.00
May 14	69	49	0.51
May 15	79	50	0.00
May 16	73	50	0.01
May 17	69	47	0.01
May 18	68	59	0.00
May 19	74	59	0.05
May 20	73	64	0.00
May 21	84	63	0.00
May 22	86	68	0.00
May 23	86	59	0.00
May 24	81	60	0.24
May 25	82	58	0.00
May 26	72	52	0.00
May 27	59	44	0.71
May 28	57	43	0.00
May 29	64	42	0.00
May 30	71	55	0.03
May 31	80	49	0.00

June 2021 Sioux Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	83	41	0.00
June 2	83	51	0.00
June 3	91	58	0.00
June 4	99	68	0.00
June 5	101	73	0.00
June 6	96	71	0.00
June 7	97	68	0.00
June 8	95	71	0.00
June 9	95	69	0.00
June 10	99	73	0.00
June 11	86	60	0.40
June 12	88	52	0.00
June 13	93	59	0.00
June 14	92	62	0.00
June 15	92	54	0.00
June 16	96	69	0.00
June 17	91	65	0.00
June 18	92	57	0.00
June 19	84	58	0.00
June 20	77	58	0.07
June 21	73	53	0.00
June 22	85	47	0.00
June 23	94	61	0.00
June 24	88	62	0.00
June 25	87	58	0.00
June 26	79	65	0.25
June 27	86	62	0.00
June 28	88	65	0.05
June 29	87	62	0.01
June 30	89	59	0.00

July 2021 Sioux Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	90	60	0.00
July 2	91	63	0.00
July 3	92	63	0.00
July 4	97	73	0.00
July 5	97	70	0.18
July 6	86	69	0.12
July 7	74	60	0.01
July 8	77	57	0.33
July 9	84	64	0.47
July 10	73	61	1.08
July 11	85	61	0.00
July 12	82	56	0.00
July 13	84	66	0.00
July 14	81	63	1.01
July 15	83	58	0.00
July 16	82	61	0.00
July 17	84	63	0.00
July 18	84	65	0.00
July 19	86	62	0.00
July 20	86	60	0.00
July 21	88	68	0.00
July 22	90	71	0.05
July 23	94	72	0.00
July 24	94	67	0.01
July 25	93	60	0.00
July 26	92	68	0.00
July 27	96	74	0.00
July 28	101	76	0.00
July 29	88	65	0.00
July 30	72	61	1.64
July 31	86	59	0.00

August 2021 Sioux Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	82	60	0.00
August 2	82	56	0.00
August 3	81	62	0.00
August 4	81	64	0.12
August 5	88	65	1.50
August 6	84	65	0.05
August 7	84	71	0.00
August 8	84	68	0.21
August 9	87	62	0.00
August 10	89	70	0.00
August 11	87	71	0.00
August 12	81	62	0.00
August 13	82	55	0.00
August 14	87	55	0.00
August 15	86	62	0.00
August 16	89	66	0.00
August 17	91	70	0.00
August 18	89	71	0.00
August 19	90	72	0.00
August 20	83	66	0.23
August 21	76	57	0.00
August 22	79	58	0.11
August 23	88	65	0.00
August 24	88	72	0.00
August 25	85	64	0.00
August 26	82	65	0.09
August 27	87	68	0.15
August 28	89	67	3.35
August 29	82	60	0.00
August 30	81	57	0.05
August 31	80	62	0.43

September 2021 Sioux Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	78	60	0.00
September 2	69	65	0.34
September 3	69	65	0.00
September 4	79	56	0.00
September 5	84	53	0.09
September 6	90	52	0.00
September 7	80	59	0.00
September 8	80	52	0.00
September 9	78	47	0.00
September 10	84	56	0.00
September 11	84	61	0.00
September 12	76	57	0.04
September 13	74	54	0.17
September 14	77	53	0.00
September 15	80	48	0.00
September 16	93	64	0.23
September 17	74	51	0.01
September 18	85	49	0.00
September 19	89	70	0.00
September 20	77	50	1.17
September 21	69	45	0.00
September 22	71	41	0.00
September 23	78	51	0.00
September 24	70	42	0.03
September 25	80	39	0.00
September 26	89	57	0.00
September 27	86	53	0.00
September 28	89	59	0.00
September 29	80	64	0.13
September 30	72	62	1.00

October 2021 Sioux Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	73	64	0.16
October 2	68	57	0.01
October 3	77	46	0.00
October 4	83	45	0.00
October 5	78	47	0.00
October 6	71	54	0.00
October 7	75	52	0.00
October 8	83	55	0.00
October 9	80	57	0.00
October 10	63	45	0.00
October 11	74	41	0.00
October 12	70	42	0.00
October 13	66	46	0.31
October 14	57	40	0.00
October 15	58	37	0.00
October 16	68	34	0.00
October 17	73	34	0.00
October 18	76	42	0.00
October 19	71	47	0.00
October 20	53	38	0.57
October 21	53	38	0.00
October 22	52	33	0.08
October 23	53	31	0.00
October 24	47	43	0.03
October 25	53	32	0.00
October 26	56	42	0.00
October 27	54	48	1.17
October 28	58	45	0.00
October 29	61	36	0.00
October 30	60	33	0.00
October 31	47	27	0.00

November 2021 Sioux Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	46	23	0.00	0.0
November 2	47	21	0.00	0.0
November 3	51	24	0.00	0.0
November 4	45	23	0.00	0.0
November 5	68	42	0.00	0.0
November 6	68	32	0.00	0.0
November 7	62	42	0.00	0.0
November 8	60	34	0.00	0.0
November 9	56	34	0.00	0.0
November 10	49	40	0.20	0.0
November 11	46	33	0.03	0.2
November 12	33	28	0.02	0.3
November 13	43	25	0.03	0.0
November 14	37	25	0.00	0.0
November 15	45	31	0.00	0.0
November 16	70	35	0.00	0.0
November 17	43	23	0.00	0.0
November 18	34	21	0.00	0.0
November 19	49	26	0.00	0.0
November 20	48	33	0.01	0.0
November 21	39	19	0.00	0.0
November 22	44	19	0.00	0.0
November 23	68	23	0.00	0.0
November 24	53	23	0.00	0.0
November 25	29	12	0.00	0.0
November 26	48	24	0.00	0.0
November 27	51	28	0.00	0.0
November 28	46	20	0.00	0.0
November 29	67	30	0.00	0.0
November 30	55	28	0.00	0.0

December 2021 Sioux Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	61	33	0.00	0.0
December 2	53	35	0.00	0.0
December 3	51	28	0.00	0.0
December 4	37	31	0.00	0.0
December 5	44	28	0.00	0.0
December 6	28	8	0.00	0.0
December 7	30	13	0.03	0.3
December 8	36	11	0.00	0.0
December 9	51	29	0.00	0.0
December 10	33	28	0.70	9.5
December 11	30	18	0.00	0.0
December 12	39	20	0.00	0.0
December 13	42	15	0.00	0.0
December 14	42	21	0.00	0.0
December 15	52	23	0.73	0.0
December 16	29	17	0.00	0.0
December 17	28	20	0.01	0.2
December 18	22	11	0.00	0.0
December 19	36	14	0.00	0.0
December 20	28	11	0.00	0.0
December 21	34	14	0.00	0.0
December 22	40	21	0.00	0.0
December 23	42	20	0.00	0.0
December 24	50	24	0.00	0.0
December 25	27	15	0.00	0.0
December 26	35	12	0.02	0.2
December 27	34	12	0.00	0.0
December 28	29	2	0.00	0.0
December 29	17	0	0.00	0.0
December 30	36	14	0.00	0.0
December 31	21	-4	0.00	0.0

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Weather Station Details

Years	Station	Coordinates
1932–2023	Sioux Falls	location