Sioux City Weather in 2020

Historical record of Sioux City, Iowa weather for the year 2020 based on NOAA data.

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2020 Sioux City Weather Extremes
Highest temperature	99 °F	June 2
Lowest temperature	-14 °F	February 20
Highest daily low	77 °F	June 29
Lowest daily high	4 °F	January 19
Most daily precipitation	2.3 inches	July 9
Most daily snow	5.5 inches	February 19
Total annual precipitation	20.1 inches	-
Total annual snow	39.9 inches	-

What was the hottest temperature in Sioux City in 2020?

The highest temperature recorded in Sioux City, Iowa in 2020 was 99 °F which happened on June 2.

Highest Temperatures: All-Time By Year

Highest Temperatures in Sioux City in 2020

Rank	Temperature	Date
1	99 °F	Jun 2
2	97 °F	Jun 1
3	96 °F	Aug 23
4	95 °F	Aug 24
4	95 °F	Jun 7
4	95 °F	Jun 6
7	94 °F	Aug 27
7	94 °F	Aug 26
7	94 °F	Aug 25
7	94 °F	Jul 25
7	94 °F	Jul 24
7	94 °F	Jul 18
7	94 °F	Jun 8

What was the coldest temperature in Sioux City in 2020?

The lowest temperature recorded in Sioux City, Iowa in 2020 was -14 °F which happened on Feb 20.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Sioux City in 2020

Rank	Temperature	Date
1	-14 °F	February 20
2	-8 °F	February 19
2	-8 °F	February 13
2	-8 °F	January 20
2	-8 °F	January 19
2	-8 °F	January 16
7	-7 °F	January 21
8	-5 °F	December 24
9	-4 °F	December 25
10	-2 °F	February 12

January 2020 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	38	22	0.01	0.0
January 2	38	24	0.00	0.0
January 3	36	23	0.01	0.1
January 4	41	14	0.00	0.0
January 5	43	26	0.00	0.0
January 6	36	22	0.02	0.0
January 7	40	20	0.00	0.0
January 8	31	13	0.00	0.0
January 9	37	25	0.00	0.0
January 10	26	8	0.00	0.0
January 11	23	2	0.00	0.0
January 12	23	6	0.12	2.3
January 13	33	9	0.00	0.0
January 14	32	15	0.00	0.0
January 15	24	-1	0.00	0.0
January 16	11	-8	0.00	0.0
January 17	31	11	0.44	4.7
January 18	31	1	0.05	0.5
January 19	4	-8	0.00	0.0
January 20	6	-8	0.00	0.0
January 21	28	-7	0.08	0.0
January 22	34	28	0.06	0.2
January 23	33	27	0.03	0.3
January 24	30	27	0.00	0.0
January 25	30	24	0.00	0.0
January 26	38	19	0.00	0.0
January 27	34	24	0.00	0.0
January 28	27	24	0.04	0.4
January 29	29	24	0.00	0.1
January 30	36	27	0.01	0.0
January 31	34	32	0.04	0.2

February 2020 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	43	22	0.00	0.0
February 2	52	30	0.00	0.0
February 3	33	22	0.00	0.0
February 4	25	18	0.00	0.0
February 5	32	17	0.00	0.0
February 6	35	15	0.01	0.1
February 7	32	12	0.00	0.0
February 8	33	10	0.00	0.0
February 9	37	20	0.00	0.0
February 10	41	12	0.00	0.0
February 11	40	22	0.00	0.0
February 12	38	-2	0.02	0.3
February 13	10	-8	0.00	0.0
February 14	30	2	0.00	0.0
February 15	45	18	0.00	0.0
February 16	47	29	0.00	0.0
February 17	42	25	0.00	0.0
February 18	38	21	0.00	0.0
February 19	22	-8	0.22	5.5
February 20	22	-14	0.00	0.0
February 21	47	7	0.00	0.0
February 22	55	27	0.00	0.0
February 23	53	26	0.00	0.0
February 24	45	27	0.00	0.0
February 25	41	26	0.00	0.0
February 26	35	19	0.00	0.0
February 27	38	20	0.05	0.8
February 28	41	25	0.00	0.2
February 29	60	25	0.00	0.0

March 2020 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	53	28	0.00	0.0
March 2	47	31	0.00	0.0
March 3	57	34	0.00	0.0
March 4	62	26	0.00	0.0
March 5	48	31	0.00	0.0
March 6	50	21	0.00	0.0
March 7	70	31	0.00	0.0
March 8	71	38	0.00	0.0
March 9	38	28	0.49	0.0
March 10	41	23	0.17	0.0
March 11	59	33	0.00	0.0
March 12	56	31	0.00	0.0
March 13	48	26	0.00	0.0
March 14	37	28	0.12	2.0
March 15	34	30	0.00	0.0
March 16	44	31	0.00	0.0
March 17	45	25	0.01	0.0
March 18	53	41	0.04	0.0
March 19	45	24	1.58	3.5
March 20	26	13	0.02	0.3
March 21	40	18	0.00	0.0
March 22	44	29	0.00	0.0
March 23	48	39	0.01	0.0
March 24	60	42	0.00	0.0
March 25	52	38	0.06	0.0
March 26	53	35	0.00	0.0
March 27	47	42	0.05	0.0
March 28	47	35	0.70	0.0
March 29	57	32	0.00	0.0
March 30	67	29	0.00	0.0
March 31	65	40	0.00	0.0

April 2020 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	74	43	0.00	0.0
April 2	58	24	0.06	0.1
April 3	29	22	0.00	0.0
April 4	50	19	0.00	0.0
April 5	60	25	0.00	0.0
April 6	71	48	0.00	0.0
April 7	80	43	0.00	0.0
April 8	66	36	0.00	0.0
April 9	45	25	0.00	0.0
April 10	57	18	0.00	0.0
April 11	57	37	0.00	0.0
April 12	44	24	0.45	3.7
April 13	36	15	0.00	0.0
April 14	40	21	0.00	0.0
April 15	47	18	0.00	0.0
April 16	43	32	0.00	0.0
April 17	55	27	0.00	0.0
April 18	75	36	0.00	0.0
April 19	59	37	0.00	0.0
April 20	72	43	0.02	0.0
April 21	74	29	0.00	0.0
April 22	83	52	0.00	0.0
April 23	82	40	0.01	0.0
April 24	66	40	0.00	0.0
April 25	66	34	0.00	0.0
April 26	73	33	0.00	0.0
April 27	82	49	0.00	0.0
April 28	70	50	0.10	0.0
April 29	70	48	0.02	0.0
April 30	74	39	0.00	0.0

May 2020 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	89	54	0.00
May 2	66	49	0.03
May 3	79	49	0.00
May 4	60	50	0.21
May 5	57	39	0.00
May 6	62	41	0.01
May 7	57	34	0.34
May 8	58	34	0.00
May 9	67	31	0.08
May 10	56	34	0.00
May 11	57	29	0.00
May 12	60	42	0.00
May 13	58	39	0.01
May 14	78	50	0.00
May 15	75	44	0.00
May 16	73	50	0.25
May 17	57	53	0.13
May 18	62	51	0.00
May 19	63	53	0.00
May 20	68	57	0.00
May 21	68	58	0.00
May 22	73	57	0.23
May 23	74	60	0.12
May 24	77	60	0.75
May 25	70	59	0.02
May 26	64	60	0.38
May 27	78	57	0.00
May 28	81	55	0.00
May 29	75	45	0.00
May 30	65	53	0.00
May 31	80	57	0.00

June 2020 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	97	68	0.00
June 2	99	68	0.00
June 3	92	60	0.00
June 4	92	60	0.00
June 5	91	64	0.00
June 6	95	70	0.00
June 7	95	77	0.00
June 8	94	73	0.00
June 9	91	57	1.06
June 10	75	54	0.00
June 11	84	50	0.00
June 12	89	53	0.00
June 13	91	61	0.00
June 14	91	65	0.00
June 15	92	73	0.00
June 16	91	71	0.00
June 17	91	70	0.00
June 18	82	62	0.13
June 19	82	58	0.00
June 20	80	59	0.06
June 21	80	62	0.20
June 22	80	58	0.02
June 23	79	52	0.00
June 24	85	50	0.00
June 25	91	58	0.00
June 26	88	69	0.04
June 27	89	66	0.00
June 28	90	69	0.05
June 29	83	77	0.00
June 30	88	73	0.00

July 2020 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	88	68	0.17
July 2	90	64	0.00
July 3	90	69	0.00
July 4	89	63	0.00
July 5	90	65	0.00
July 6	89	67	0.37
July 7	91	65	0.00
July 8	92	71	0.00
July 9	86	66	2.33
July 10	88	64	0.00
July 11	86	62	0.01
July 12	85	59	0.00
July 13	88	64	0.00
July 14	80	67	0.18
July 15	81	60	0.00
July 16	87	57	0.00
July 17	91	70	0.00
July 18	94	73	0.00
July 19	86	64	0.00
July 20	84	68	0.07
July 21	87	61	0.00
July 22	86	57	0.00
July 23	91	64	0.00
July 24	94	75	0.00
July 25	94	76	0.11
July 26	87	75	0.00
July 27	87	59	0.00
July 28	90	61	0.00
July 29	89	67	0.87
July 30	83	65	0.04
July 31	84	59	0.00

August 2020 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	84	61	0.00
August 2	80	59	0.00
August 3	77	53	0.00
August 4	78	47	0.12
August 5	78	60	0.24
August 6	85	63	0.00
August 7	83	70	0.00
August 8	85	71	0.00
August 9	90	66	0.20
August 10	79	57	0.38
August 11	82	53	0.00
August 12	86	70	0.01
August 13	88	69	0.00
August 14	86	64	0.14
August 15	83	55	0.00
August 16	87	59	0.00
August 17	86	60	0.00
August 18	84	52	0.00
August 19	87	55	0.00
August 20	86	59	0.00
August 21	93	64	0.00
August 22	93	66	0.00
August 23	96	63	0.00
August 24	95	68	0.00
August 25	94	65	0.00
August 26	94	67	0.00
August 27	94	66	0.00
August 28	89	68	0.00
August 29	81	55	0.00
August 30	81	51	0.00
August 31	78	51	0.23

September 2020 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	81	50	0.00
September 2	88	48	0.00
September 3	77	50	0.00
September 4	86	50	0.00
September 5	91	49	0.00
September 6	93	69	0.00
September 7	74	51	0.00
September 8	51	44	1.02
September 9	53	44	0.16
September 10	62	46	0.13
September 11	57	52	0.22
September 12	66	51	0.07
September 13	81	44	0.00
September 14	82	51	0.00
September 15	81	54	0.00
September 16	76	53	0.00
September 17	71	45	0.00
September 18	71	47	0.00
September 19	73	52	0.00
September 20	77	54	0.00
September 21	79	56	0.00
September 22	84	54	0.00
September 23	82	53	0.00
September 24	86	55	0.00
September 25	85	54	0.00
September 26	82	52	0.00
September 27	71	53	0.00
September 28	62	43	0.00
September 29	81	39	0.00
September 30	70	44	0.00

October 2020 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
October 1	58	32	0.00	0.0
October 2	60	30	0.09	0.0
October 3	57	43	0.03	0.0
October 4	64	31	0.00	0.0
October 5	78	46	0.00	0.0
October 6	84	39	0.00	0.0
October 7	82	43	0.00	0.0
October 8	79	40	0.00	0.0
October 9	84	52	0.00	0.0
October 10	78	42	0.00	0.0
October 11	85	51	0.59	0.0
October 12	67	44	0.01	0.0
October 13	66	39	0.00	0.0
October 14	71	38	0.00	0.0
October 15	54	30	0.00	0.0
October 16	55	32	0.00	0.0
October 17	68	39	0.00	0.0
October 18	43	34	0.00	0.0
October 19	36	31	0.04	0.0
October 20	43	32	0.03	0.0
October 21	52	31	0.00	0.0
October 22	41	35	0.11	0.0
October 23	38	19	0.00	0.0
October 24	32	15	0.00	0.0
October 25	29	18	0.27	4.2
October 26	27	15	0.00	0.0
October 27	37	8	0.00	0.0
October 28	54	20	0.00	0.0
October 29	45	30	0.00	0.0
October 30	53	24	0.00	0.0
October 31	65	36	0.00	0.0

November 2020 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	47	23	0.00	0.0
November 2	70	23	0.00	0.0
November 3	79	32	0.00	0.0
November 4	73	30	0.00	0.0
November 5	77	34	0.00	0.0
November 6	77	37	0.00	0.0
November 7	75	57	0.00	0.0
November 8	74	56	0.00	0.0
November 9	66	31	0.54	0.0
November 10	32	14	0.74	3.0
November 11	38	14	0.00	0.0
November 12	31	13	0.00	0.0
November 13	41	12	0.00	0.0
November 14	45	29	0.00	0.0
November 15	47	21	0.00	0.0
November 16	57	20	0.00	0.0
November 17	52	20	0.00	0.0
November 18	65	34	0.00	0.0
November 19	66	38	0.00	0.0
November 20	56	32	0.00	0.0
November 21	46	20	0.02	0.0
November 22	47	22	0.00	0.0
November 23	37	18	0.00	0.0
November 24	40	33	0.79	0.0
November 25	34	29	0.00	0.0
November 26	42	23	0.00	0.0
November 27	49	23	0.00	0.0
November 28	56	22	0.00	0.0
November 29	38	23	0.00	0.0
November 30	40	9	0.00	0.0

December 2020 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	47	15	0.00	0.0
December 2	42	16	0.00	0.0
December 3	48	17	0.00	0.0
December 4	51	20	0.00	0.0
December 5	48	22	0.00	0.0
December 6	39	19	0.00	0.0
December 7	51	17	0.00	0.0
December 8	58	19	0.00	0.0
December 9	57	28	0.00	0.0
December 10	47	23	0.00	0.0
December 11	41	31	0.02	0.3
December 12	34	25	0.00	0.0
December 13	33	16	0.00	0.0
December 14	21	9	0.00	0.0
December 15	26	19	0.00	0.0
December 16	32	14	0.00	0.0
December 17	36	11	0.00	0.0
December 18	47	21	0.00	0.0
December 19	35	8	0.00	0.0
December 20	47	16	0.00	0.0
December 21	51	25	0.00	0.0
December 22	55	21	0.00	0.0
December 23	51	8	0.22	3.0
December 24	11	-5	0.00	0.0
December 25	36	-4	0.00	0.0
December 26	35	8	0.00	0.0
December 27	32	22	0.01	0.1
December 28	31	10	0.00	0.0
December 29	26	17	0.26	4.0
December 30	31	9	0.00	0.0
December 31	28	1	0.00	0.0

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Weather Station Details

Years	Station	Coordinates
1948–2024	Sioux City Gateway Airport	location