Sioux City Weather in 1999

Historical record of Sioux City, Iowa weather for the year 1999 based on NOAA data.

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1999 Sioux City Weather Extremes
Highest temperature	96 °F	July 29
Lowest temperature	-20 °F	January 9
Highest daily low	75 °F	July 25
Lowest daily high	-4 °F	January 4
Most daily precipitation	2.8 inches	August 29
Most daily snow	8.0 inches	February 22
Total annual precipitation	29.5 inches	-
Total annual snow	37.2 inches	-

What was the hottest temperature in Sioux City in 1999?

The highest temperature recorded in Sioux City, Iowa in 1999 was 96 °F which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in Sioux City in 1999

Rank	Temperature	Date
1	96 °F	Jul 29
1	96 °F	Jul 8
3	95 °F	Jul 28
4	94 °F	Jul 15
4	94 °F	Jul 4
4	94 °F	Jun 8
7	93 °F	Jul 3
8	92 °F	Jul 30
8	92 °F	Jul 25
8	92 °F	Jul 22
8	92 °F	Jul 5
8	92 °F	Jun 9
8	92 °F	Jun 7

What was the coldest temperature in Sioux City in 1999?

The lowest temperature recorded in Sioux City, Iowa in 1999 was -20 °F which happened on Jan 9.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Sioux City in 1999

Rank	Temperature	Date
1	-20 °F	January 9
2	-14 °F	January 4
3	-11 °F	January 5
4	-9 °F	January 13
5	-6 °F	December 22
5	-6 °F	December 21
7	-5 °F	December 20
7	-5 °F	January 8
7	-5 °F	January 3
10	-1 °F	December 23

January 1999 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	12	7	0.08	4.5
January 2	14	5	0.02	1.1
January 3	5	-5	0.00	0.0
January 4	-4	-14	0.00	0.0
January 5	26	-11	0.00	0.0
January 6	28	0	0.01	0.1
January 7	10	0	0.01	0.6
January 8	15	-5	0.03	1.0
January 9	24	-20	0.00	0.0
January 10	25	3	0.00	0.0
January 11	30	11	0.00	0.0
January 12	24	0	0.00	0.0
January 13	11	-9	0.00	0.0
January 14	22	8	0.00	0.0
January 15	37	11	0.00	0.0
January 16	41	18	0.00	0.0
January 17	41	31	0.13	0.0
January 18	34	21	0.00	0.0
January 19	36	18	0.00	0.0
January 20	38	23	0.00	0.0
January 21	39	22	0.03	0.0
January 22	33	28	0.01	0.0
January 23	31	27	0.00	0.0
January 24	30	18	0.00	0.0
January 25	30	9	0.00	0.0
January 26	38	23	0.00	0.0
January 27	38	26	0.00	0.0
January 28	33	19	0.00	0.0
January 29	39	18	0.00	0.0
January 30	30	19	0.00	0.0
January 31	37	22	0.01	0.0

February 1999 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	39	32	0.00	0.0
February 2	49	26	0.00	0.0
February 3	49	30	0.02	0.0
February 4	38	25	0.00	0.0
February 5	51	30	0.00	0.0
February 6	45	24	0.00	0.0
February 7	53	28	0.00	0.0
February 8	60	31	0.00	0.0
February 9	55	28	0.00	0.0
February 10	68	35	0.00	0.0
February 11	35	22	0.00	0.0
February 12	31	22	0.00	0.0
February 13	44	13	0.00	0.0
February 14	60	25	0.00	0.0
February 15	45	31	0.00	0.0
February 16	37	17	0.00	0.0
February 17	34	14	0.00	0.0
February 18	32	26	0.16	1.6
February 19	29	10	0.09	1.5
February 20	31	13	0.11	2.2
February 21	29	4	0.00	0.0
February 22	27	21	0.40	8.0
February 23	29	16	0.03	0.3
February 24	36	18	0.00	0.0
February 25	39	14	0.00	0.0
February 26	38	30	0.00	0.0
February 27	40	31	0.00	0.0
February 28	48	30	0.00	0.0

March 1999 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	57	27	0.01	0.0
March 2	45	27	0.05	0.0
March 3	36	19	0.00	0.0
March 4	47	28	0.00	0.0
March 5	39	29	0.00	0.0
March 6	29	24	0.00	0.0
March 7	40	25	0.00	0.0
March 8	31	21	0.65	7.6
March 9	30	15	0.00	0.0
March 10	30	26	0.10	1.8
March 11	31	14	0.00	0.0
March 12	34	12	0.00	0.0
March 13	36	12	0.00	0.0
March 14	39	14	0.00	0.0
March 15	55	26	0.00	0.0
March 16	69	31	0.00	0.0
March 17	55	32	0.00	0.0
March 18	51	26	0.00	0.0
March 19	56	21	0.00	0.0
March 20	57	25	0.00	0.0
March 21	51	23	0.00	0.0
March 22	46	29	0.00	0.0
March 23	55	21	0.00	0.0
March 24	49	26	0.00	0.0
March 25	50	16	0.00	0.0
March 26	60	20	0.00	0.0
March 27	57	37	0.07	0.0
March 28	57	36	0.01	0.0
March 29	69	23	0.00	0.0
March 30	77	41	0.00	0.0
March 31	76	54	0.00	0.0

April 1999 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	79	40	0.00	0.0
April 2	48	36	0.00	0.0
April 3	45	30	0.00	0.0
April 4	64	23	0.00	0.0
April 5	53	36	0.95	0.0
April 6	63	37	0.00	0.0
April 7	74	41	0.00	0.0
April 8	58	42	1.09	0.0
April 9	54	43	0.01	0.0
April 10	56	40	0.09	0.0
April 11	56	39	0.00	0.0
April 12	64	31	0.00	0.0
April 13	67	47	0.14	0.0
April 14	54	38	1.10	0.0
April 15	45	36	0.22	0.0
April 16	36	32	0.07	0.7
April 17	50	33	0.01	0.1
April 18	60	27	0.00	0.0
April 19	65	34	0.00	0.0
April 20	76	48	0.01	0.0
April 21	65	46	0.66	0.0
April 22	52	40	0.01	0.0
April 23	54	37	0.00	0.0
April 24	63	47	0.00	0.0
April 25	64	46	0.11	0.0
April 26	55	48	0.01	0.0
April 27	54	48	0.18	0.0
April 28	66	48	0.00	0.0
April 29	69	46	0.00	0.0
April 30	71	35	0.00	0.0

May 1999 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	74	37	0.00
May 2	70	45	0.03
May 3	77	56	0.03
May 4	66	55	1.03
May 5	57	49	0.11
May 6	53	47	0.05
May 7	58	46	0.01
May 8	64	44	0.00
May 9	77	42	0.00
May 10	78	49	0.08
May 11	63	47	0.23
May 12	68	46	0.00
May 13	74	38	0.00
May 14	70	53	0.16
May 15	78	57	0.00
May 16	74	61	1.19
May 17	67	50	0.05
May 18	77	42	0.00
May 19	83	58	0.00
May 20	69	62	0.57
May 21	75	54	0.00
May 22	83	53	1.40
May 23	65	53	0.00
May 24	69	49	0.00
May 25	72	47	0.00
May 26	77	42	0.00
May 27	86	56	0.00
May 28	87	55	0.00
May 29	85	53	0.00
May 30	83	57	0.24
May 31	64	55	0.03

June 1999 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	62	51	1.42
June 2	75	47	0.00
June 3	81	58	0.17
June 4	87	63	1.88
June 5	89	72	0.00
June 6	89	69	0.00
June 7	92	63	0.00
June 8	94	70	0.00
June 9	92	66	0.41
June 10	75	63	0.58
June 11	70	59	0.00
June 12	77	56	0.00
June 13	77	58	0.00
June 14	74	52	0.00
June 15	61	49	1.75
June 16	68	43	0.00
June 17	72	45	0.00
June 18	69	52	0.01
June 19	70	62	0.00
June 20	78	63	0.00
June 21	84	63	0.00
June 22	77	65	0.12
June 23	84	63	0.15
June 24	87	59	0.01
June 25	90	65	0.00
June 26	91	67	0.00
June 27	78	59	1.36
June 28	72	53	0.01
June 29	65	49	0.01
June 30	71	55	0.02

July 1999 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	79	53	0.00
July 2	81	60	0.77
July 3	93	74	0.00
July 4	94	75	0.00
July 5	92	72	0.00
July 6	84	56	0.00
July 7	87	58	0.00
July 8	96	71	0.35
July 9	79	59	0.00
July 10	78	59	0.00
July 11	80	55	0.00
July 12	83	56	0.00
July 13	91	64	0.00
July 14	91	73	0.00
July 15	94	74	0.00
July 16	83	65	0.20
July 17	83	59	0.00
July 18	87	71	1.68
July 19	90	73	0.13
July 20	89	71	0.10
July 21	91	72	0.01
July 22	92	74	0.00
July 23	91	73	0.01
July 24	91	70	0.00
July 25	92	75	0.00
July 26	88	74	0.00
July 27	88	69	0.00
July 28	95	70	0.00
July 29	96	74	0.00
July 30	92	71	0.05
July 31	84	64	0.00

August 1999 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	77	58	0.00
August 2	78	63	0.00
August 3	80	58	0.00
August 4	81	58	0.00
August 5	83	51	0.00
August 6	72	57	0.45
August 7	83	66	0.00
August 8	80	58	0.00
August 9	89	64	0.00
August 10	88	59	0.00
August 11	77	66	0.34
August 12	86	60	0.21
August 13	74	52	0.00
August 14	77	50	0.00
August 15	86	62	0.00
August 16	88	57	0.00
August 17	86	52	0.00
August 18	83	61	0.70
August 19	79	56	0.00
August 20	80	57	0.00
August 21	83	62	0.00
August 22	79	63	0.00
August 23	79	59	0.00
August 24	83	57	0.00
August 25	80	55	0.00
August 26	87	65	0.01
August 27	90	63	0.00
August 28	90	64	0.00
August 29	84	67	2.78
August 30	81	64	0.08
August 31	82	64	0.00

September 1999 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	85	67	0.07
September 2	87	63	0.00
September 3	86	68	0.00
September 4	74	62	0.28
September 5	74	51	0.00
September 6	79	57	0.00
September 7	85	61	0.07
September 8	73	50	0.00
September 9	69	43	0.00
September 10	77	39	0.00
September 11	80	48	0.09
September 12	70	48	0.01
September 13	66	42	0.00
September 14	65	43	0.00
September 15	69	36	0.00
September 16	74	43	0.00
September 17	76	45	0.00
September 18	82	45	0.00
September 19	66	51	0.00
September 20	61	34	0.00
September 21	70	29	0.00
September 22	84	39	0.00
September 23	87	42	0.00
September 24	83	44	0.00
September 25	87	53	0.00
September 26	69	52	0.00
September 27	66	47	0.00
September 28	69	41	0.00
September 29	67	30	0.00
September 30	71	37	0.00

October 1999 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	55	28	0.16
October 2	49	31	0.00
October 3	52	30	0.00
October 4	68	27	0.00
October 5	73	37	0.00
October 6	77	35	0.00
October 7	84	60	0.04
October 8	74	45	0.04
October 9	81	41	0.00
October 10	72	40	0.00
October 11	73	32	0.00
October 12	76	51	0.00
October 13	59	37	0.00
October 14	75	37	0.00
October 15	69	44	0.00
October 16	58	39	0.00
October 17	53	28	0.00
October 18	57	34	0.00
October 19	50	25	0.00
October 20	67	22	0.00
October 21	76	37	0.00
October 22	57	34	0.00
October 23	49	25	0.00
October 24	62	18	0.00
October 25	72	30	0.00
October 26	76	31	0.00
October 27	86	37	0.00
October 28	57	34	0.00
October 29	70	34	0.00
October 30	64	34	0.00
October 31	71	30	0.00

November 1999 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	59	37	0.00	0.0
November 2	53	24	0.00	0.0
November 3	60	20	0.00	0.0
November 4	69	22	0.00	0.0
November 5	59	32	0.00	0.0
November 6	64	28	0.00	0.0
November 7	73	30	0.00	0.0
November 8	81	39	0.00	0.0
November 9	73	48	0.00	0.0
November 10	61	33	0.00	0.0
November 11	60	30	0.00	0.0
November 12	66	34	0.00	0.0
November 13	78	35	0.00	0.0
November 14	56	30	0.00	0.0
November 15	68	26	0.00	0.0
November 16	59	31	0.00	0.0
November 17	59	31	0.00	0.0
November 18	69	38	0.00	0.0
November 19	43	27	0.07	0.0
November 20	51	19	0.00	0.0
November 21	52	30	0.00	0.0
November 22	49	26	0.05	0.0
November 23	43	31	0.38	1.5
November 24	47	25	0.00	0.0
November 25	49	21	0.00	0.0
November 26	50	36	0.14	0.0
November 27	47	36	0.02	0.0
November 28	48	28	0.01	0.0
November 29	45	24	0.00	0.0
November 30	52	34	0.00	0.0

December 1999 Sioux City Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	53	36	0.00	0.0
December 2	48	36	0.00	0.0
December 3	44	33	0.09	0.0
December 4	39	30	0.00	0.0
December 5	38	19	0.00	0.0
December 6	44	17	0.00	0.0
December 7	52	20	0.00	0.0
December 8	50	24	0.00	0.0
December 9	43	19	0.00	0.0
December 10	39	14	0.00	0.0
December 11	42	22	0.00	0.0
December 12	49	15	0.00	0.0
December 13	49	14	0.00	0.0
December 14	44	26	0.04	0.6
December 15	31	15	0.16	2.4
December 16	20	3	0.00	0.0
December 17	21	15	0.00	0.0
December 18	27	19	0.00	0.0
December 19	34	16	0.02	0.4
December 20	17	-5	0.00	0.0
December 21	15	-6	0.04	1.2
December 22	10	-6	0.00	0.0
December 23	40	-1	0.00	0.0
December 24	33	20	0.00	0.0
December 25	51	14	0.00	0.0
December 26	42	26	0.00	0.0
December 27	43	21	0.00	0.0
December 28	53	26	0.00	0.0
December 29	61	21	0.00	0.0
December 30	54	21	0.00	0.0
December 31	54	17	0.00	0.0

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Weather Station Details

Years	Station	Coordinates
1948–2024	Sioux City Gateway Airport	location