Sioux City, IA: Fall

10 October 2026: Fall 2026 so far averaged 67.7°F in Sioux City, IA, the warmest 1 September to 10 October since 1939, tied 4th warmest of 138 (with 1939).

Fall 2026 so far, to 10 October 2026

Mean temperature: 67.7°F; Warmest since 1939; 4th warmest of 138
Precipitation: 3.50 in; Wettest since 2023; 56th wettest of 138

A normal 1 September to 10 October in Sioux City, IA (1991 to 2020): a mean temperature of 61.6°F, between 59°F and 65.6°F in eight years of ten and 3.56 in of precipitation, between 1.25 in and 6.56 in in eight years of ten.

The mean temperature of every 1 September to 10 October in Sioux City, IA since 1889: 67.7°F in 2026; the highest is 69.7°F, in 1897.

Normal range, 59 to 65.6°F

Every year, ranked, as a table

Every 1 September to 10 October in Sioux City, IA from 1889 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank
2026	67.7	4	77.4	28	58	2	3.50	56
2025	65.9	16	79.3	11	52.6	37	2.08	93
2024	65.8	17	82	2	49.6	75	0.22	138
2023	66.2	11	79.8	8	52.6	37	5.10	32
2022	64.5	32	79.9	7	49.1	89	0.80	127
2021	66	13	79.1	13	53	27	2.56	81
2020	61.3	84	74.9	57	47.6	114	1.72	106
2019	65	29	75.8	47	54.1	14	6.17	20
2018	61.4	79	70.8	120	52.1	45	9.83	2
2017	64.2	38	75.4	52	53	27	8.70	7
2016	65.3	26	76.7	35	53.9	16	3.80	53
2015	65.6	19	76.6	38	54.7	12	3.13	64
2014	61.4	79	73.1	82	49.7	73	3.32	60
2013	66.4	9	79.5	10	53.3	22	2.43	88
2012	59.2	124	77.3	29	41.1	138	0.47	135
2011	61.6	75	76.1	44	47.1	124	0.42	136
2010	62.7	60	76.7	35	48.6	103	3.01	66
2009	59.6	120	71.1	117	48.1	109	6.55	17
2008	62.4	64	75.6	49	49.3	82	4.08	47
2007	63.5	48	76.5	40	50.5	63	5.12	31
2006	60	109	71.7	109	48.4	106	5.71	26
2005	67.2	6	81.8	3	52.7	33	4.50	39
2004	64.7	30	79	15	50.4	65	3.85	51
2003	60.2	103	75.5	51	44.8	133	6.65	16
2002	62	71	75.2	54	48.9	97	2.77	72
2001	59.9	114	72.4	96	47.4	120	4.35	42
2000	59.6	120	74.9	57	44.3	136	1.30	117
1999	59	128	73.4	75	44.6	134	0.76	129
1998	66	13	79.3	11	52.7	33	2.42	89
1997	65.2	28	79.8	8	50.7	61	2.68	75
1996	58.9	131	70.4	125	47.4	120	2.67	76
1995	59	128	71.9	105	46	131	5.00	34
1994	64.1	39	75.4	52	52.9	30	5.94	22
1993	57.6	136	69.8	130	45.5	132	2.48	84
1992	60.8	91	72.7	88	48.9	97	6.31	18
1991	61.6	75	74.6	64	48.6	103	2.96	68
1990	64.5	32	77.6	25	51.4	51	1.81	104
1989	59.1	127	71.8	108	46.5	128	4.41	41
1988	61	87	73.2	76	48.8	101	5.17	30
1987	60.4	100	73.2	76	47.7	112	1.44	114
1986	61.5	78	71.3	113	51.8	48	5.91	23
1985	58.1	134	66.6	138	49.5	79	4.66	36
1984	60.3	102	71.7	109	48.9	97	2.38	90
1983	64.3	35	76.3	42	52.4	41	3.99	49
1982	62.2	65	72.4	96	51.9	46	7.08	14
1981	62	71	75.1	56	48.9	97	1.16	121
1980	62.5	62	76.5	40	48.4	106	1.40	115
1979	62	71	74.7	59	49.2	87	2.05	96
1978	64.1	39	76.7	35	51.5	50	1.84	103
1977	60.8	91	71.2	116	50.3	67	6.23	19
1976	61.7	74	75.7	48	47.7	112	2.06	94
1975	59.4	123	72.5	93	46.2	130	1.17	119
1974	58.1	134	72.6	91	43.6	137	1.01	124
1973	62.9	54	72.5	93	53.3	22	6.06	21
1972	62.8	56	74.7	59	51	59	2.83	71
1971	63.7	44	77.5	27	49.9	72	1.14	122
1970	61.4	79	72.3	99	50.5	63	11.12	1
1969	62.9	54	74.7	59	51.2	56	2.01	97
1968	60.5	99	72	104	49.1	89	4.75	35
1967	61	87	73.2	76	48.8	101	1.33	116
1966	60.7	96	72.4	96	49.1	89	1.29	118
1965	57.3	137	67.1	137	47.5	115	9.69	4
1964	60	109	70.7	123	49.3	82	3.22	62
1963	67	7	78.4	19	55.6	5	2.46	85
1962	60.8	91	71.9	105	49.7	73	3.30	61
1961	60.1	105	71.3	113	49	93	4.14	45
1960	64.3	35	77.3	29	51.4	51	1.87	102
1959	59.9	114	70.7	123	49.1	89	3.00	67
1958	64.1	39	77.1	31	51.2	56	0.58	131
1957	60.6	97	70.9	118	50.2	68	5.82	25
1956	63.1	52	78.3	20	47.9	110	0.40	137
1955	65.4	23	77.7	24	53.1	25	1.46	112
1954	63.7	44	74.3	68	53.2	24	4.10	46
1953	62.8	56	78.8	17	46.8	126	1.12	123
1952	61.4	79	76.2	43	46.6	127	1.51	109
1951	58.8	133	70.2	126	47.5	115	5.10	32
1950	59.8	117	72.7	88	47	125	1.17	119
1949	60.8	91	74.1	71	47.4	120	7.65	10
1948	65.5	20	79.1	13	51.9	46	1.49	110
1947	65.8	17	79	15	52.6	37	2.27	91
1946	61.4	79	72.7	88	50.1	70	7.25	13
1945	59.9	114	72.6	91	47.2	123	2.66	77
1944	60.1	105	70.8	120	49.4	80	2.01	97
1943	60.1	105	73.9	73	46.3	129	2.50	83
1942	60	109	71.3	113	48.6	103	4.22	44
1941	63.2	50	74.7	59	51.7	49	9.27	5
1940	65.4	23	78.2	21	52.7	33	2.65	78
1939	67.7	4	81.5	4	54	15	0.56	134
1938	68.7	3	80.7	5	56.8	3	8.39	8
1937	64.4	34	75.6	49	53.1	25	2.95	69
1936	66	13	77	32	55	10	2.45	86
1935	60.8	91	72.2	102	49.4	80	1.93	100
1934	60.6	97	72.3	99	49	93	3.43	58
1933	66.3	10	77.8	23	54.8	11	5.85	24
1932	60.2	103	71.4	112	49	93	2.45	86
1931	69.6	2	80.2	6	59.1	1	4.01	48
1930	66.1	12	76.6	38	55.6	5	2.60	80
1929	59.5	122	68.3	136	50.7	61	3.55	54
1928	62.2	65	74.7	59	49.6	75	2.14	92
1927	62.8	56	72.2	102	53.5	19	3.54	55
1926	61.2	85	70.1	128	52.4	41	7.58	11
1925	63.2	50	72.8	86	53.7	17	3.19	63
1924	59.2	124	69.5	132	49	93	2.76	73
1923	63.7	44	73	83	54.4	13	7.46	12
1922	66.6	8	78.1	22	55.1	7	0.79	128
1921	63.3	49	74.4	67	52.3	44	4.59	38
1920	65.5	20	77.6	25	53.4	20	1.94	99
1919	64.6	31	74.2	69	55.1	7	2.88	70
1918	59.2	124	70.9	118	47.5	115	0.95	126
1917	60.4	100	70.8	120	50.1	70	0.97	125
1916	60.9	90	72.3	99	49.6	75	3.49	57
1915	59	128	68.7	135	49.3	82	4.23	43
1914	63.8	42	74.2	69	53.4	20	8.80	6
1913	63.6	47	74.6	64	52.6	37	1.47	111
1912	59.8	117	69.3	133	50.2	68	3.83	52
1911	62.5	62	71.9	105	53	27	5.32	29
1910	62.2	65	73.2	76	51.2	56	4.63	37
1909	63	53	73.2	76	52.8	31	2.61	79
1908	65.3	26	77	32	53.6	18	1.89	101
1907	61.1	86	73	83	49.2	87	2.06	94
1906	62.1	70	73	83	51.3	54	8.06	9
1905	65.5	20	75.9	45	55.1	7	6.88	15
1904	62.2	65	73.2	76	51.3	54	1.56	108
1903	59.7	119	70.2	126	49.3	82	5.54	28
1902	58.9	131	70	129	47.8	111	4.49	40
1901	60.1	105	69.8	130	50.4	65	9.73	3
1900	62.7	60	74	72	51.4	51	5.65	27
1899	61	87	74.5	66	47.5	115	0.68	130
1898	62.2	65	75.2	54	49.3	82	1.78	105
1897	69.7	1	83.6	1	55.7	4	0.57	133
1896	56.7	138	69	134	44.4	135	3.36	59
1895	64.3	35	75.9	45	52.7	33	3.95	50
1894	61.6	75	73.6	74	49.6	75	2.76	73
1893	63.8	42	76.8	34	50.9	60	1.45	113
1892	65.4	23	78.5	18	52.4	41	0.58	131
1891	62.8	56	72.8	86	52.8	31	3.07	65
1890	60	109	71.6	111	48.4	106	2.52	82
1889	60	109	72.5	93	47.5	115	1.71	107

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1897	69.7
1931	69.6
1938	68.7
2026	67.7
1939	67.7
2005	67.2
1963	67
1922	66.6
2013	66.4
1933	66.3

Coldest
Year	Mean, °F
1896	56.7
1965	57.3
1993	57.6
1985	58.1
1974	58.1
1951	58.8
1996	58.9
1902	58.9
1999	59
1995	59
More years share the last value

Wettest
Year	Precipitation, in
1970	11.12
2018	9.83
1901	9.73
1965	9.69
1941	9.27
1914	8.80
2017	8.70
1938	8.39
1906	8.06
1949	7.65

Driest
Year	Precipitation, in
2024	0.22
1956	0.40
2011	0.42
2012	0.47
1939	0.56
1897	0.57
1958	0.58
1892	0.58
1899	0.68
1999	0.76

The hottest, coldest and wettest days

Hottest day: 96°F; 18 September 2026
Coldest night: 40°F; 5 October 2026
Wettest day: 0.61 in; 24 September 2026

Every month, season and year

Months

Seasons

Years

Sioux City, IA the day's answers

All-time records

Every answer in words

Fall 2026 so far brought 3.50 in of precipitation in Sioux City, IA, the wettest 1 September to 10 October since 2023, 56th wettest of 138.
The hottest day of fall 2026 so far in Sioux City, IA: 96°F on Friday 18 September 2026.
The coldest night of fall 2026 so far in Sioux City, IA: a low of 40°F on Monday 5 October 2026.
The wettest day of fall 2026 so far in Sioux City, IA: 0.61 in on Thursday 24 September 2026.