Des Moines, IA: August

31 August 2026: August 2026 averaged 75.2°F in Des Moines, IA, the warmest August since 2023, tied 44th warmest of 149 (with 2001 and 1998).

August 2026

Mean temperature: 75.2°F; Warmest since 2023; 44th warmest of 149
Precipitation: 5.83 in; Wettest since 2019; 27th wettest of 149

A normal August in Des Moines, IA (1991 to 2020): a mean temperature of 74.8°F, between 72°F and 77.4°F in eight years of ten and 3.58 in of precipitation, between 1.30 in and 7.45 in in eight years of ten.

The mean temperature of every August in Des Moines, IA since 1878: 75.2°F in 2026; the highest is 83.3°F, in 1983.

Normal range, 72 to 77.4°F

Every year, ranked, as a table

Every August in Des Moines, IA from 1878 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	Days missing
2026	75.2	44	83.3	83	67.1	17	5.83	27	0
2025	73.7	75	82.5	94	64.9	47	1.96	110	0
2024	75	48	84.4	66	65.6	37	2.90	78	0
2023	75.9	31	85.4	43	66.4	28	2.40	97	0
2022	76.1	27	86.4	31	65.8	36	4.04	57	0
2021	76.4	24	86.4	31	66.4	28	2.13	105	0
2020	75	48	85.8	37	64.3	59	1.37	134	0
2019	73.2	86	82.2	104	64.1	63	6.16	25	0
2018	75.4	41	85.6	40	65.3	40	3.93	59	0
2017	72.2	111	82.8	89	61.6	118	3.50	66	0
2016	76	28	84.6	58	67.5	13	5.64	30	0
2015	73.1	92	82.1	107	64.2	61	4.25	52	0
2014	75.4	41	83.6	77	67.2	16	11.36	3	0
2013	77.4	19	88	19	66.7	25	0.98	142	0
2012	75.5	38	87.5	21	63.5	72	2.32	100	0
2011	76.3	25	85.5	41	67	19	3.18	70	0
2010	78	13	87.6	20	68.4	6	10.75	4	0
2009	72.5	104	81.9	111	63.2	84	4.29	51	0
2008	72.6	100	82.4	99	62.9	95	1.94	111	0
2007	77.3	20	86.1	35	68.6	5	7.08	14	0
2006	74.6	58	82.8	89	66.3	30	5.82	28	0
2005	75.4	41	85.5	41	65.4	39	1.33	137	0
2004	68.8	146	78.1	147	59.5	140	5.61	32	0
2003	77.7	15	88.1	18	67.4	15	0.67	146	0
2002	72.7	97	82.2	104	63.3	82	4.14	55	0
2001	75.2	44	85.2	44	65.2	42	2.53	92	0
2000	75.5	38	84.6	58	66.3	30	1.70	127	0
1999	72.3	108	81.6	118	63.1	85	4.56	47	0
1998	75.2	44	83.3	83	67	19	5.64	30	0
1997	72.1	113	81	129	63.1	85	2.61	88	0
1996	72.3	108	81	129	63.5	72	2.54	90	0
1995	79.1	5	88.7	12	69.5	4	1.04	140	0
1994	71.2	126	82	109	60.5	132	2.81	82	0
1993	73.8	72	82.5	94	65	44	12.24	2	0
1992	68.3	148	78.8	144	57.8	148	1.39	132	0
1991	73.7	75	83.8	73	63.5	72	3.65	62	0
1990	74.4	61	83.8	73	64.9	47	1.83	116	0
1989	73.3	84	83.5	79	63	90	6.53	22	0
1988	78.8	6	90.8	4	66.8	22	3.05	74	0
1987	72	116	81.2	126	62.9	95	10.04	6	0
1986	69.2	145	78.7	146	59.8	138	4.52	48	0
1985	71.9	118	81.8	112	62	111	2.83	79	0
1984	77.5	18	89.1	11	65.9	33	0.25	148	0
1983	83.3	1	94.8	1	71.8	1	3.01	75	0
1982	73.2	86	81.8	112	64.6	55	5.25	37	0
1981	72.4	106	81.2	126	63.5	72	6.32	24	0
1980	76.2	26	85.8	37	66.5	27	7.24	13	0
1979	74.3	64	83.3	83	65.3	40	5.07	40	0
1978	75.1	47	86.1	35	64.1	63	3.10	72	0
1977	72.1	113	82.3	102	61.9	114	13.68	1	0
1976	73.8	72	84.8	54	62.7	103	2.26	101	0
1975	77.1	21	87.5	21	66.6	26	9.73	7	0
1974	71.1	128	80.8	133	61.4	123	2.81	82	0
1973	76.9	22	86.7	30	67.1	17	1.37	134	0
1972	72.4	106	81.5	120	63.3	82	6.65	18	0
1971	73.2	86	84.5	63	61.8	116	1.83	116	0
1970	73.9	67	83.5	79	64.2	61	4.95	42	0
1969	74.7	56	84.8	54	64.5	58	1.83	116	0
1968	73	94	82.4	99	63.6	70	4.05	56	0
1967	70.3	135	81.7	117	58.9	145	0.79	144	0
1966	70.8	131	81.6	118	59.9	136	2.09	107	0
1965	72.8	95	84.2	67	61.5	122	1.93	112	0
1964	70.3	135	81.2	126	59.5	140	3.94	58	0
1963	71.4	122	80.3	136	62.5	108	4.83	44	0
1962	74.2	65	84.6	58	63.7	68	1.60	129	0
1961	73.2	86	83.6	77	62.8	101	2.77	84	0
1960	74.9	53	85	49	64.8	52	6.78	15	0
1959	77.8	14	87.5	21	68.2	7	2.44	95	0
1958	74.4	61	85.2	44	63.5	72	1.78	121	0
1957	74.4	61	84.9	51	64	66	2.93	77	0
1956	74.5	59	84.9	51	64.1	63	3.47	67	0
1955	78.1	11	90	7	66.2	32	1.77	122	0
1954	73.4	82	82.6	91	64.3	59	10.47	5	0
1953	75	48	87.1	26	62.9	95	0.71	145	0
1952	71.1	128	81.3	123	60.9	128	5.70	29	0
1951	72.3	108	82.2	104	62.3	109	4.74	46	0
1950	68.4	147	77.7	148	59.1	144	2.05	108	0
1949	73.7	75	84.7	56	62.7	103	1.76	125	0
1948	75.7	36	86.4	31	64.9	47	1.37	134	0
1947	82.2	2	93.6	2	70.5	2	0.93	143	1
1946	70	139	78.9	143	60.4	133	6.06	26	3
1945	74	66	84.5	63	63.4	79	1.56	131	0
1944	72.6	100	82.6	91	62.6	107	4.42	50	0
1943	74.5	59	83.3	83	65.6	37	6.42	23	0
1942	72.8	95	82.5	94	63	90	2.20	103	0
1941	76	28	87.1	26	65	44	2.36	99	0
1940	71.2	126	79.5	140	62.9	95	9.63	8	0
1939	71.7	120	81.8	112	61.6	118	5.58	33	0
1938	77.6	17	88.5	15	66.8	22	3.08	73	0
1937	78.7	7	89.4	10	68.1	8	2.72	85	0
1936	80.4	3	92.7	3	68.1	8	2.53	92	0
1935	74.9	53	84.9	51	64.9	47	1.85	114	0
1934	75.8	34	88.5	15	63.1	85	1.39	132	0
1933	71.8	119	81.8	112	61.8	116	1.85	114	0
1932	73.1	92	82.5	94	63.6	70	8.40	9	0
1931	72.6	100	83.7	76	61.6	118	3.66	61	0
1930	75.8	34	86.8	29	64.8	52	1.00	141	0
1929	73.5	80	84	69	62.9	95	2.82	81	0
1928	73.9	67	83.9	72	63.8	67	7.75	12	0
1927	69.7	143	80.2	137	59.3	143	1.61	128	0
1926	75.9	31	85.8	37	65.9	33	2.95	76	0
1925	73.9	67	84.7	56	63	90	4.79	45	0
1924	73.6	78	82.6	91	64.6	55	4.15	54	0
1923	71.5	121	80.9	131	62	111	5.34	35	0
1922	74.7	56	84.6	58	64.9	47	6.63	19	0
1921	73.2	86	83	88	63.5	72	6.63	19	0
1920	71.4	122	81.8	112	61	127	2.11	106	0
1919	73.3	84	83.3	83	63.4	79	2.19	104	0
1918	78.7	7	89.9	9	67.5	13	2.54	90	0
1917	70.9	130	82	109	59.8	138	1.82	119	0
1916	75.7	36	86.4	31	65.1	43	2.62	87	0
1915	67.3	149	76.8	149	57.8	148	1.71	126	0
1914	75.9	31	87.2	25	64.6	55	1.77	122	0
1913	78.7	7	90.6	5	66.8	22	3.44	68	0
1912	72.7	97	82.4	99	63	90	3.52	65	0
1911	73.8	72	84.6	58	63.1	85	1.82	119	0
1910	73.4	82	84	69	62.8	101	2.40	97	0
1909	78.1	11	88.5	15	67.7	12	0.14	149	0
1908	71.4	122	81.3	123	61.6	118	6.54	21	0
1907	72	116	82.1	107	62	111	5.03	41	0
1906	74.9	53	85.1	46	64.7	54	4.86	43	0
1905	75.5	38	85.1	46	65.9	33	5.21	38	0
1904	70.1	137	80.4	135	59.9	136	2.60	89	0
1903	70.1	137	79.2	142	61.1	126	6.72	16	0
1902	70.4	133	78.8	144	62.1	110	7.82	11	0
1901	75	48	87.1	26	62.9	95	0.67	146	0
1900	77.7	15	87.5	21	67.9	11	8.02	10	0
1899	75	48	85.1	46	65	44	3.53	64	0
1898	73.9	67	85	49	62.7	103	1.09	139	0
1897	70.4	133	81.3	123	59.4	142	1.77	122	0
1896	72.7	97	82.3	102	63.1	85	5.49	34	0
1895	73.6	78	84.5	63	62.7	103	3.57	63	0
1894	76	28	88.6	13	63.4	79	1.89	113	0
1893	73.5	80	88.6	13	58.4	147	1.60	129	0
1892	72.2	111	82.5	94	61.9	114	2.45	94	0
1891	69.8	142	79.6	139	60.1	135	4.22	53	0
1890	69.6	144	80.5	134	58.7	146	3.35	69	0
1889	72.1	113	83.4	81	60.8	129	2.25	102	0
1888	71.4	122	81.5	120	61.2	125	4.52	48	0
1887	72.6	100	83.8	73	61.4	123	2.66	86	0
1886	78.5	10	90	7	67	19	1.10	138	0
1885	70	139	79.7	138	60.3	134	5.10	39	0
1884	70	139	79.4	141	60.7	131	3.84	60	0
1883	70.8	131	80.9	131	60.8	129	2.83	79	0
1882	72.5	104	81.5	120	63.5	72	3.14	71	0
1881	79.3	4	90.5	6	68.1	8	5.29	36	0
1880	73.9	67	84.2	67	63.7	68	6.69	17	0
1879	73.2	86	83.4	81	63	90	1.98	109	0
1878	76.9	22	84	69	69.7	3	2.41	96	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1983	83.3
1947	82.2
1936	80.4
1881	79.3
1995	79.1
1988	78.8
1937	78.7
1918	78.7
1913	78.7
1886	78.5

Coldest
Year	Mean, °F
1915	67.3
1992	68.3
1950	68.4
2004	68.8
1986	69.2
1890	69.6
1927	69.7
1891	69.8
1946	70
1885	70
More years share the last value

Wettest
Year	Precipitation, in
1977	13.68
1993	12.24
2014	11.36
2010	10.75
1954	10.47
1987	10.04
1975	9.73
1940	9.63
1932	8.40
1900	8.02

Driest
Year	Precipitation, in
1909	0.14
1984	0.25
2003	0.67
1901	0.67
1953	0.71
1967	0.79
1947	0.93
2013	0.98
1930	1.00
1995	1.04

The hottest, coldest and wettest days

Hottest day: 92°F; 31 August 2026, 11 August 2026
Coldest night: 57°F; 23 August 2026
Wettest day: 2.38 in; 13 August 2026

Every month, season and year

Months

Seasons

Years

Des Moines, IA the day's answers

All-time records

Every answer in words

August 2026 brought 5.83 in of precipitation in Des Moines, IA, the wettest August since 2019, 27th wettest of 149.
The hottest day of August 2026 in Des Moines, IA: 92°F on Monday 31 August 2026 and Tuesday 11 August 2026.
The coldest night of August 2026 in Des Moines, IA: a low of 57°F on Sunday 23 August 2026.
The wettest day of August 2026 in Des Moines, IA: 2.38 in on Thursday 13 August 2026.