Average Temperature in Sioux City by Year

This page contains a list of the average yearly high and low temperatures in Sioux City, Iowa for each year between 1948 and 2023. It is based on NOAA data.

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What Was the Hottest Year Ever in Sioux City?

2012 was the warmest year in the history of Sioux City, Iowa. The average daily high temperature was 65.8 °F, and the average low was 39.4 °F.

What Was the Coldest Year Ever in Sioux City?

1996 was the coolest year in the history of Sioux City, Iowa. The average daily high temperature was 55.9 °F, and the average low was 34.3 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	8	62.7	39.1
2022	32	62.6	35.7
2021	10	62.6	38.8
2020	21	61.5	38.3
2019	66	57.5	37.1
2018	63	57.9	37.2
2017	9	62.2	39.3
2016	2	63.4	41.4
2015	6	62.2	39.7
2014	56	59.6	36.2
2013	64	58.7	36.2
2012	1	65.8	39.4
2011	42	60.2	37.0
2010	38	60.0	37.7
2009	60	58.8	36.5
2008	70	57.8	35.0
2007	26	60.4	38.3
2006	7	62.8	38.9
2005	4	63.3	39.5
2004	28	60.9	37.7
2003	41	60.6	36.7
2002	25	61.1	37.5
2001	35	60.2	37.8
2000	39	60.6	37.1
1999	15	61.6	38.6
1998	5	61.4	40.5
1997	61	58.8	36.5
1996	76	55.9	34.3
1995	48	58.8	37.8
1994	49	59.1	37.5
1993	71	56.0	36.2
1992	36	59.2	38.8
1991	18	60.7	39.4
1990	11	62.1	38.9
1989	55	59.9	36.1
1988	19	62.2	37.8
1987	3	63.4	41.0
1986	20	60.4	39.6
1985	65	57.5	37.1
1984	47	57.7	39.0
1983	52	56.9	39.2
1982	68	56.8	36.9
1981	14	61.9	38.6
1980	33	60.5	37.7
1979	72	56.1	35.0
1978	75	56.0	34.6
1977	27	59.8	38.8
1976	46	60.8	36.2
1975	54	58.3	37.7
1974	16	61.4	38.8
1973	12	60.3	40.7
1972	62	57.6	37.6
1971	29	60.0	38.5
1970	50	59.0	37.2
1969	69	56.7	36.7
1968	34	60.3	37.8
1967	58	59.1	36.6
1966	59	58.8	36.8
1965	51	58.7	37.5
1964	31	60.2	38.3
1963	22	60.6	38.9
1962	53	58.2	37.8
1961	57	58.4	37.4
1960	67	58.1	36.1
1959	43	59.1	38.0
1958	37	60.2	37.5
1957	30	59.5	39.0
1956	23	61.5	37.9
1955	24	61.3	38.0
1954	13	61.0	39.9
1953	17	61.9	38.2
1952	45	60.1	36.9
1951	74	55.9	34.7
1950	73	57.1	33.6
1949	44	60.4	36.8
1948	40	60.4	37.0

Weather Station Details

Years	Station	Coordinates
1948–2024	Sioux City Gateway Airport	location