Sioux City Weather in 2018

Historical record of Sioux City, Iowa weather for the year 2018 based on NOAA data.

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2018 Sioux City Weather Extremes
Highest temperature	102 °F	May 27
Lowest temperature	-28 °F	January 2
Highest daily low	78 °F	June 29
Lowest daily high	-2 °F	January 1
Most daily precipitation	2.7 inches	September 4
Most daily snow	12.1 inches	January 22
Total annual precipitation	37.8 inches	-
Total annual snow	43.1 inches	-

What was the hottest temperature in Sioux City in 2018?

The highest temperature recorded in Sioux City, Iowa in 2018 was 102 °F which happened on May 27.

Highest Temperatures: All-Time By Year

Highest Temperatures in Sioux City in 2018

Rank	Temperature	Date
1	102 °F	May 27
2	97 °F	May 26
3	96 °F	May 28
4	95 °F	Jul 12
4	95 °F	Jun 1
6	94 °F	Sep 17
6	94 °F	Jun 16
6	94 °F	Jun 5
9	93 °F	Jun 6
9	93 °F	May 25
9	93 °F	May 24

What was the coldest temperature in Sioux City in 2018?

The lowest temperature recorded in Sioux City, Iowa in 2018 was -28 °F which happened on Jan 2.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Sioux City in 2018

Rank	Temperature	Date
1	-28 °F	January 2
2	-25 °F	January 1
3	-12 °F	February 10
4	-11 °F	February 11
5	-9 °F	February 12
6	-7 °F	February 6
7	-5 °F	January 16
7	-5 °F	January 4
9	-4 °F	January 17
9	-4 °F	January 12

January 2018 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	-2	-25	0.00	0.0
January 2	25	-28	0.00	0.0
January 3	21	-2	0.00	0.0
January 4	12	-5	0.00	0.0
January 5	12	7	0.00	0.0
January 6	17	2	0.00	0.0
January 7	39	15	0.00	0.0
January 8	46	14	0.00	0.0
January 9	46	30	0.00	0.0
January 10	42	28	0.00	0.0
January 11	28	2	0.03	0.5
January 12	10	-4	0.00	0.0
January 13	15	0	0.00	0.0
January 14	30	11	0.06	0.8
January 15	12	-3	0.00	0.0
January 16	10	-5	0.00	0.0
January 17	35	-4	0.00	0.0
January 18	44	10	0.00	0.0
January 19	57	24	0.00	0.0
January 20	56	22	0.00	0.0
January 21	41	27	0.03	0.0
January 22	35	27	1.26	12.1
January 23	27	13	0.00	0.0
January 24	27	10	0.00	0.0
January 25	43	12	0.00	0.0
January 26	43	32	0.00	0.0
January 27	39	17	0.00	0.0
January 28	27	3	0.00	0.0
January 29	17	0	0.00	0.0
January 30	40	10	0.00	0.0
January 31	37	20	0.00	0.0

February 2018 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	20	0	0.00	0.0
February 2	32	-3	0.00	0.0
February 3	42	17	0.00	0.0
February 4	17	-1	0.00	0.0
February 5	16	-1	0.30	3.2
February 6	10	-7	0.01	0.1
February 7	14	0	0.01	0.1
February 8	18	11	0.22	2.2
February 9	14	5	0.05	1.5
February 10	7	-12	0.00	0.0
February 11	17	-11	0.00	0.0
February 12	14	-9	0.00	0.0
February 13	33	9	0.00	0.0
February 14	44	15	0.00	0.0
February 15	37	14	0.00	0.0
February 16	27	4	0.00	0.0
February 17	36	18	0.08	1.0
February 18	48	19	0.00	0.0
February 19	30	18	0.04	0.0
February 20	19	6	0.01	0.0
February 21	22	-1	0.00	0.0
February 22	28	19	0.26	2.6
February 23	27	12	0.00	0.0
February 24	28	16	0.07	0.4
February 25	36	9	0.00	0.0
February 26	45	12	0.00	0.0
February 27	44	25	0.00	0.0
February 28	39	20	0.00	0.0

March 2018 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	38	20	0.00	0.0
March 2	46	21	0.00	0.0
March 3	58	33	0.00	0.0
March 4	57	38	0.00	0.0
March 5	47	24	0.40	2.4
March 6	31	20	0.06	1.3
March 7	27	20	0.00	0.0
March 8	30	15	0.00	0.0
March 9	39	26	0.00	0.0
March 10	47	29	0.03	0.0
March 11	33	30	0.03	0.0
March 12	44	25	0.00	0.0
March 13	45	23	0.00	0.0
March 14	65	25	0.00	0.0
March 15	53	30	0.00	0.0
March 16	37	32	0.80	0.0
March 17	39	32	0.00	0.0
March 18	41	35	0.00	0.0
March 19	49	35	0.00	0.0
March 20	37	32	0.06	0.0
March 21	51	26	0.00	0.0
March 22	59	33	0.02	0.0
March 23	49	37	0.18	0.0
March 24	37	30	0.31	0.2
March 25	38	31	0.01	0.0
March 26	38	34	0.05	0.0
March 27	55	33	0.00	0.0
March 28	64	29	0.00	0.0
March 29	47	29	0.00	0.0
March 30	56	29	0.00	0.0
March 31	48	23	0.00	0.0

April 2018 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	38	21	0.00	0.0
April 2	37	24	0.00	0.0
April 3	32	13	0.15	1.0
April 4	40	7	0.00	0.0
April 5	48	27	0.00	0.0
April 6	32	18	0.00	0.0
April 7	42	13	0.00	0.0
April 8	35	27	0.02	0.3
April 9	36	28	0.00	0.0
April 10	67	22	0.00	0.0
April 11	68	35	0.00	0.0
April 12	65	33	0.00	0.0
April 13	49	39	0.00	0.0
April 14	39	23	0.52	5.7
April 15	30	22	0.00	0.0
April 16	42	20	0.00	0.0
April 17	53	24	0.00	0.0
April 18	39	31	0.32	2.5
April 19	54	26	0.00	0.0
April 20	60	29	0.00	0.0
April 21	56	40	0.00	0.0
April 22	68	33	0.00	0.0
April 23	73	32	0.00	0.0
April 24	65	39	0.13	0.0
April 25	63	38	0.00	0.0
April 26	66	38	0.00	0.0
April 27	73	35	0.00	0.0
April 28	65	36	0.00	0.0
April 29	78	38	0.00	0.0
April 30	86	60	0.00	0.0

May 2018 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	70	55	0.56
May 2	61	48	0.00
May 3	65	42	0.66
May 4	77	48	0.00
May 5	82	49	0.04
May 6	79	49	0.00
May 7	83	45	0.00
May 8	83	56	0.00
May 9	80	53	0.00
May 10	70	51	0.00
May 11	60	46	0.74
May 12	51	47	0.13
May 13	63	51	0.12
May 14	71	56	0.18
May 15	78	50	0.00
May 16	84	51	0.00
May 17	86	56	0.00
May 18	80	57	0.00
May 19	66	52	0.22
May 20	56	52	0.33
May 21	71	54	0.30
May 22	79	54	0.06
May 23	90	62	0.00
May 24	93	65	0.00
May 25	93	64	0.00
May 26	97	62	0.00
May 27	102	65	0.00
May 28	96	68	0.00
May 29	87	63	0.37
May 30	85	64	0.00
May 31	91	60	0.00

June 2018 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	95	63	0.30
June 2	77	59	0.59
June 3	79	54	0.00
June 4	85	52	0.00
June 5	94	60	0.00
June 6	93	70	0.00
June 7	81	66	0.68
June 8	89	66	0.00
June 9	85	64	0.76
June 10	83	67	0.66
June 11	83	69	0.10
June 12	81	62	0.00
June 13	79	54	0.11
June 14	86	64	0.01
June 15	92	77	0.00
June 16	94	76	0.00
June 17	87	71	0.31
June 18	86	69	0.56
June 19	80	69	0.00
June 20	69	58	0.79
June 21	68	60	0.15
June 22	78	58	0.00
June 23	77	58	0.00
June 24	85	62	2.10
June 25	73	65	1.35
June 26	81	65	0.04
June 27	86	63	0.00
June 28	83	67	0.01
June 29	91	78	0.00
June 30	85	69	0.13

July 2018 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	80	65	0.86
July 2	84	59	0.00
July 3	89	70	0.00
July 4	90	68	0.06
July 5	84	66	0.00
July 6	83	59	0.00
July 7	86	63	0.00
July 8	87	62	0.00
July 9	92	66	0.00
July 10	91	71	0.00
July 11	92	69	0.00
July 12	95	75	0.00
July 13	79	66	0.83
July 14	86	64	0.00
July 15	88	62	0.28
July 16	84	62	0.00
July 17	84	63	0.00
July 18	84	58	0.02
July 19	83	65	0.04
July 20	85	62	0.00
July 21	84	61	0.00
July 22	83	61	0.00
July 23	87	60	0.15
July 24	84	56	0.00
July 25	87	61	0.00
July 26	80	57	0.00
July 27	76	51	0.00
July 28	75	59	0.06
July 29	81	53	0.00
July 30	83	53	0.00
July 31	83	54	0.00

August 2018 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	84	58	0.00
August 2	82	51	0.00
August 3	90	65	0.00
August 4	84	67	0.69
August 5	76	64	0.32
August 6	83	66	0.00
August 7	83	61	0.09
August 8	87	60	0.00
August 9	89	62	0.00
August 10	86	59	0.00
August 11	85	61	0.00
August 12	86	64	0.00
August 13	89	63	0.00
August 14	87	64	0.00
August 15	86	62	0.00
August 16	81	63	1.16
August 17	85	63	0.00
August 18	82	60	0.00
August 19	78	64	1.15
August 20	75	63	0.65
August 21	74	56	0.00
August 22	76	50	0.00
August 23	71	55	0.00
August 24	83	63	0.01
August 25	85	57	0.00
August 26	84	69	0.44
August 27	85	70	0.00
August 28	72	53	0.00
August 29	76	48	0.00
August 30	73	54	0.00
August 31	81	66	0.00

September 2018 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	83	68	0.06
September 2	78	66	0.00
September 3	78	67	0.09
September 4	75	68	2.65
September 5	71	59	0.01
September 6	77	52	0.00
September 7	75	51	0.00
September 8	75	50	0.00
September 9	74	48	0.00
September 10	81	53	0.00
September 11	84	59	0.00
September 12	83	59	0.00
September 13	80	64	0.00
September 14	90	68	0.00
September 15	92	65	0.00
September 16	90	64	0.00
September 17	94	65	0.00
September 18	73	63	2.29
September 19	82	63	2.12
September 20	92	59	0.04
September 21	59	43	0.00
September 22	71	39	0.00
September 23	80	46	0.00
September 24	74	53	0.00
September 25	62	49	0.15
September 26	70	39	0.00
September 27	65	53	0.00
September 28	54	38	0.00
September 29	49	37	0.01
September 30	53	47	0.00

October 2018 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
October 1	54	47	0.07	0.0
October 2	61	50	0.11	0.0
October 3	92	42	0.38	0.0
October 4	47	35	0.19	0.0
October 5	58	44	0.00	0.0
October 6	53	40	0.00	0.0
October 7	51	42	0.22	0.0
October 8	55	50	0.30	0.0
October 9	50	44	1.14	0.0
October 10	45	35	0.00	0.0
October 11	46	33	0.00	0.0
October 12	44	32	0.04	0.0
October 13	63	31	0.10	0.0
October 14	41	32	0.06	0.1
October 15	49	25	0.00	0.0
October 16	64	27	0.00	0.0
October 17	60	31	0.00	0.0
October 18	73	35	0.00	0.0
October 19	69	39	0.09	0.0
October 20	52	27	0.00	0.0
October 21	72	26	0.00	0.0
October 22	66	31	0.00	0.0
October 23	57	25	0.00	0.0
October 24	61	32	0.00	0.0
October 25	51	44	0.12	0.0
October 26	65	40	0.00	0.0
October 27	70	35	0.02	0.0
October 28	62	35	0.00	0.0
October 29	70	30	0.00	0.0
October 30	56	39	0.00	0.0
October 31	60	30	0.00	0.0

November 2018 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	61	25	0.00	0.0
November 2	49	38	0.00	0.0
November 3	43	39	0.47	0.0
November 4	42	37	0.03	0.0
November 5	46	37	0.24	0.0
November 6	41	29	0.00	0.0
November 7	31	20	0.00	0.0
November 8	35	19	0.00	0.0
November 9	26	8	0.05	0.6
November 10	29	6	0.00	0.0
November 11	33	24	0.00	0.0
November 12	25	9	0.00	0.0
November 13	40	6	0.00	0.0
November 14	50	19	0.00	0.0
November 15	60	23	0.00	0.0
November 16	43	28	0.01	0.0
November 17	31	13	0.00	0.0
November 18	38	8	0.00	0.0
November 19	34	14	0.00	0.0
November 20	52	10	0.00	0.0
November 21	51	21	0.00	0.0
November 22	62	26	0.00	0.0
November 23	51	34	0.00	0.0
November 24	49	26	0.00	0.0
November 25	29	19	0.00	0.0
November 26	27	12	0.00	0.0
November 27	28	6	0.00	0.0
November 28	31	21	0.03	0.0
November 29	38	19	0.00	0.0
November 30	39	28	0.10	0.0

December 2018 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	36	32	0.56	2.7
December 2	33	24	0.04	0.6
December 3	25	23	0.00	0.0
December 4	28	21	0.00	0.0
December 5	30	16	0.00	0.0
December 6	26	13	0.00	0.0
December 7	29	8	0.00	0.0
December 8	27	5	0.00	0.0
December 9	28	8	0.00	0.0
December 10	30	4	0.00	0.0
December 11	28	13	0.00	0.0
December 12	35	17	0.00	0.0
December 13	37	21	0.00	0.0
December 14	40	15	0.00	0.0
December 15	42	18	0.00	0.0
December 16	43	25	0.00	0.0
December 17	42	21	0.00	0.0
December 18	43	28	0.00	0.0
December 19	43	27	0.00	0.0
December 20	38	25	0.00	0.0
December 21	29	23	0.00	0.0
December 22	40	26	0.00	0.0
December 23	38	22	0.00	0.0
December 24	37	18	0.00	0.0
December 25	33	21	0.00	0.0
December 26	39	32	0.70	0.0
December 27	39	18	0.54	0.2
December 28	18	2	0.03	0.5
December 29	24	1	0.00	0.0
December 30	37	20	0.00	0.0
December 31	30	8	0.02	0.5

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Weather Station Details

Years	Station	Coordinates
1948–2024	Sioux City Gateway Airport	location