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Sioux City October Weather

Averages and records for weather in Sioux City, Iowa in the month of October.

Typical Sioux City October Weather 1991–2020
Average daily high	63.4 °F
Average daily low	38.2 °F
Average monthly precipitation	2.2 inches
Average monthly snow	0.8 inches
Daily chance of precipitation	24.5%
Daily chance of snow	1.7%

Sioux City October Weather Records 1948–2024
Highest temperature	94 °F	October 2, 1997
Lowest temperature	8 °F	October 27, 2020
Highest daily low	70 °F	October 1, 2023
Lowest daily high	27 °F	October 26, 2020
Hottest average high temperature	74.4 °F	1963
Coldest average high temperature	53.3 °F	2009
Most daily precipitation	4.4 inches	October 30, 1979
Most monthly precipitation	6.8 inches	2017
Most daily snow	8.8 inches	October 31, 1991
Most monthly snow	9.8 inches	1991

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°F)		Record (°F)
Day	High	Low	High	Low
October 1	70.9	44.4	92	25
October 2	70.4	43.9	94	24
October 3	70.0	43.5	93	28
October 4	69.6	43.0	91	27
October 5	69.1	42.6	93	23
October 6	68.8	42.2	91	22
October 7	68.5	41.7	89	15
October 8	68.1	41.4	93	17
October 9	67.6	41.1	87	20
October 10	67.0	40.6	87	24
October 11	66.5	40.2	91	19
October 12	65.9	39.8	92	23
October 13	65.3	39.5	92	23
October 14	64.7	39.1	89	22
October 15	64.1	38.6	90	22
October 16	63.4	38.2	85	22
October 17	62.8	37.7	89	15
October 18	62.3	37.3	87	15
October 19	61.8	36.9	88	13
October 20	61.3	36.4	87	16
October 21	60.8	35.9	81	21
October 22	60.2	35.5	85	17
October 23	59.6	35.0	87	18
October 24	59.1	34.5	82	15
October 25	58.6	34.2	81	18
October 26	58.1	33.7	84	15
October 27	57.5	33.2	86	8
October 28	56.9	32.7	78	15
October 29	56.2	32.3	80	18
October 30	55.8	31.9	85	16
October 31	55.3	31.5	80	12

Weather Station Details

Years	Station	Coordinates
1948–2024	Sioux City Gateway Airport	location