Number of Days of 100 °F in Sioux City by Year

This page contains a list of the number of days in each year that the high temperature equaled or exceeded 100 degrees Fahrenheit in Sioux City, Iowa, between 1948 and 2024.

Also see:

Which year had the most 100° days?

Based on NOAA records, the year 1988 holds the record for the most 100 °F days in Sioux City history. There were 11 days with a high temperature of at least 100 degrees that year.

How many so far this year (2024)?

It has not reached 100 degrees Fahrenheit in Sioux City so far in 2024. As of April 26, the highest temperature this year is 86 °F.

The last time it reached at least 100° F was September 2, 2023.

Years marked with a gold background have more than 5% incomplete data
Click column headers to sort

Year	Rank	Days >= 100 °F
2024	33	0
2023	6	4
2022	12	2
2021	33	0
2020	33	0
2019	33	0
2018	22	1
2017	33	0
2016	33	0
2015	33	0
2014	33	0
2013	22	1
2012	4	6
2011	12	2
2010	33	0
2009	33	0
2008	33	0
2007	33	0
2006	6	4
2005	33	0
2004	33	0
2003	33	0
2002	33	0
2001	22	1
2000	12	2
1999	33	0
1998	33	0
1997	33	0
1996	33	0
1995	12	2
1994	33	0
1993	33	0
1992	33	0
1991	33	0
1990	22	1
1989	22	1
1988	1	11
1987	33	0
1986	33	0
1985	22	1
1984	33	0
1983	10	3
1982	33	0
1981	33	0
1980	5	5
1979	33	0
1978	33	0
1977	33	0
1976	10	3
1975	33	0
1974	3	9
1973	33	0
1972	22	1
1971	12	2
1970	12	2
1969	33	0
1968	33	0
1967	22	1
1966	33	0
1965	33	0
1964	12	2
1963	33	0
1962	33	0
1961	12	2
1960	22	1
1959	33	0
1958	33	0
1957	22	1
1956	6	4
1955	2	10
1954	6	4
1953	22	1
1952	12	2
1951	33	0
1950	33	0
1949	33	0
1948	12	2

Weather Station Details

Years	Station	Coordinates
1948–2024	Sioux City Gateway Airport	location