Rapid City Downtown, SD: August

31 August 2026: August 2026 averaged 74.7°F in Rapid City Downtown, SD, the warmest August since 2022, tied 13th warmest of 115 (with 1958).

August 2026

Mean temperature: 74.7°F; Warmest since 2022; 13th warmest of 115
Precipitation: 4.16 in; Wettest since 2014; 7th wettest of 115

The mean temperature of every August in Rapid City Downtown, SD since 1888: 74.7°F in 2026; the highest is 77.3°F, in 1961.

Every year, ranked, as a table

Every August in Rapid City Downtown, SD from 1888 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	74.7	13	87.3	18	62.2	8	4.16	7	0
2025	72.8	36	84	55	61.6	17	1.52	61	0
2024	73.6	23	85.8	31	61.4	22	1.67	54	0
2023	73.4	28	84.8	46	61.9	13	1.67	54	0
2022	76.4	3	88.8	9	64	1	2.38	31	0
2021	74.5	16	87.3	18	61.7	15	0.94	84	0
2020	74.9	11	87.7	14	62.2	8	1.72	53	0
2019	68.6	97	78.5	108	58.7	58	3.81	9	0
2018	69.6	82	80.4	97	58.9	56	1.59	60	0
2017	69.6	82	81.6	88	57.7	77	2.57	25	0
2016	71.2	62	82.5	77	59.9	35	3.32	15	0
2015	71.5	53	83.2	66	59.9	35	2.25	35	0
2014	69.8	79	79.5	106	60.1	33	4.75	3	0
2013	74	20	85.2	39	62.8	5	3.04	18	0
2012	73.9	22	87	24	60.9	27	0.38	107	0
2011	73.5	24	85.6	33	61.5	20	2.39	30	0
2010	73.2	31	85.4	36	61	24	1.66	56	0
2009	68.6	97	80.7	94	56.5	92	1.23	72	0
2008	72	43	84.6	48	59.4	45	1.30	67	0
2007	72.4	40	83.4	63	61.4	22	4.65	4	0
2006	71.7	49	83.5	59	59.9	35	3.37	13	0
2005	70.2	73	82	83	58.5	61	1.94	48	0
2004	68.3	100	80.6	96	56	101	1.02	80	0
2003	76	5	88.3	12	63.6	2	1.65	58	0
2002	70.6	68	83.5	59	57.7	77	0.83	86	0
2001	74.6	15	87.2	21	62	12	2.70	22	0
2000	74.5	16	86.8	27	62.3	7	1.76	51	0
1999	71.5	53	83.3	65	59.8	39	1.23	72	0
1998	72.6	38	83.5	59	61.6	17	1.49	63	0
1997	69.2	90	78.5	108	59.8	39	3.94	8	0
1996	71.5	53	85	42	58.1	67	1.02	80	0
1971	74.8	12	89.2	7	60.4	30	0.50	100	0
1970	75.4	9	89.8	4	61	24	1.30	67	0
1969	75.6	7	89.5	5	61.7	15	0.31	111	0
1968	69	94	81.4	90	56.5	92	3.15	17	0
1967	72	43	85.2	39	58.8	57	1.08	78	0
1966	67.6	105	79.7	104	55.4	107	2.87	20	0
1965	71.1	64	83.1	68	59.1	51	2.07	39	0
1964	69.5	87	83	70	55.9	102	1.44	64	0
1963	74	20	86.9	25	61	24	1.88	49	0
1962	72.1	42	85.2	39	59.1	51	0.79	87	0
1961	77.3	1	91.2	1	63.3	3	0.48	102	0
1960	73.5	24	87.2	21	59.7	41	1.97	45	0
1959	75.7	6	90	3	61.5	20	0.65	95	1
1958	74.7	13	87.6	16	61.8	14	0.65	95	0
1957	71.4	59	82.8	74	59.9	35	1.52	61	0
1956	69.5	87	81.6	88	57.6	80	3.67	11	2
1955	76.2	4	89	8	63.3	3	2.19	36	0
1954	71.6	51	84.6	48	58.6	59	2.01	41	0
1953	72.4	40	85.4	36	59.6	43	2.47	27	1
1952	72.8	36	86	30	59.5	44	0.44	103	0
1951	70	76	82.1	82	58	71	4.23	5	0
1950	68.6	97	81.8	87	55.4	107	1.76	51	0
1949	73.5	24	88.4	11	58.5	61	2.68	23	0
1948	71.5	53	84.7	47	58.2	66	2.46	29	0
1947	75.5	8	89.3	6	61.6	17	1.03	79	0
1946	67.7	104	79.6	105	55.7	104	2.06	40	0
1945	71.6	51	83.9	56	59.3	47	4.19	6	0
1944	70.3	72	82.5	77	58	71	0.09	115	0
1943	73.5	24	87.3	18	59.7	41	0.36	108	0
1942	70.4	71	82.3	79	58.5	61	0.66	93	0
1941	71.8	46	83.5	59	60.1	33	2.17	37	0
1940	71.8	46	84.4	51	59.3	47	1.18	76	0
1939	71.5	53	85	42	58.1	67	1.28	71	0
1938	74.5	16	88.7	10	60.3	31	0.66	93	0
1937	76.7	2	90.7	2	62.7	6	0.43	104	0
1936	75	10	87.8	13	62.1	10	0.70	91	0
1935	70.9	67	84.9	44	57	85	0.19	112	0
1934	71.7	49	85.4	36	58	71	0.43	104	0
1933	69	94	79.9	100	58.1	67	3.00	19	0
1932	71.2	62	83.2	66	59.2	50	3.78	10	0
1931	71.1	64	84.3	53	57.9	75	1.00	82	0
1930	72.5	39	82.9	72	62.1	10	0.96	83	0
1929	73.1	33	87.2	21	59	54	1.29	70	0
1928	69.7	80	82.6	76	56.9	88	0.42	106	0
1927	65	115	75.2	115	54.8	109	3.18	16	0
1926	69.7	80	81.9	85	57.5	81	2.27	34	0
1925	71.4	59	84.9	44	57.9	75	2.30	33	0
1924	69.6	82	82.9	72	56.3	97	1.19	75	0
1923	67	109	77.2	112	56.8	89	3.50	12	0
1922	73.3	30	85.8	31	60.9	27	1.22	74	0
1921	70.5	69	83	70	58	71	1.99	44	0
1920	69.3	89	82.2	81	56.4	95	1.30	67	0
1919	71.8	46	85.5	34	58.1	67	0.35	109	0
1918	69.9	77	82.7	75	57.1	84	2.64	24	0
1917	67.1	108	80.3	98	54	113	1.36	65	0
1916	67.8	103	79.9	100	55.6	105	2.36	32	0
1915	65.5	113	76.5	114	54.5	111	3.35	14	0
1914	68.3	100	80.8	93	55.8	103	1.95	47	0
1913	73.1	33	86.9	25	59.4	45	1.12	77	0
1912	67.6	105	79	107	56.2	98	2.86	21	0
1911	65.5	113	77	113	54.1	112	2.01	41	0
1910	66.9	111	80.1	99	53.8	115	0.59	98	0
1909	74.1	19	87.6	16	60.5	29	0.49	101	0
1908	67	109	79.9	100	54	113	0.87	85	0
1907	68.7	96	82	83	55.5	106	0.72	88	0
1906	67.3	107	77.6	110	57	85	5.67	1	0
1905	69.6	82	81.4	90	57.7	77	1.66	56	0
1904	70.1	74	83.7	58	56.4	95	1.36	65	0
1903	68	102	79.8	103	56.1	100	2.47	27	0
1902	69.1	93	80.7	94	57.5	81	0.72	88	0
1901	71.5	53	83.8	57	59.3	47	2.52	26	0
1900	73.2	31	86.1	29	60.3	31	1.64	59	0
1899	71.3	61	84.4	51	58.3	65	0.52	99	0
1898	73	35	86.8	27	59.1	51	0.72	88	0
1897	69.2	90	81.1	92	57.4	83	2.15	38	0
1896	70.5	69	84.6	48	56.5	92	0.13	113	0
1895	69.9	77	83.1	68	56.7	90	0.69	92	0
1894	73.4	28	87.7	14	59	54	0.35	109	0
1893	70.1	74	84.1	54	56.2	98	0.63	97	0
1892	71	66	83.4	63	58.6	59	2.00	43	0
1891	69.2	90	81.9	85	56.6	91	1.97	45	0
1890	69.6	82	82.3	79	57	85	1.83	50	0
1889	71.9	45	85.5	34	58.4	64	0.11	114	0
1888	66.1	112	77.5	111	54.7	110	4.76	2	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1961	77.3
1937	76.7
2022	76.4
1955	76.2
2003	76
1959	75.7
1969	75.6
1947	75.5
1970	75.4
1936	75

Coldest
Year	Mean, °F
1927	65
1915	65.5
1911	65.5
1888	66.1
1910	66.9
1923	67
1908	67
1917	67.1
1906	67.3
1966	67.6
More years share the last value

Wettest
Year	Precipitation, in
1906	5.67
1888	4.76
2014	4.75
2007	4.65
1951	4.23
1945	4.19
2026	4.16
1997	3.94
2019	3.81
1932	3.78

Driest
Year	Precipitation, in
1944	0.09
1889	0.11
1896	0.13
1935	0.19
1969	0.31
1919	0.35
1894	0.35
1943	0.36
2012	0.38
1928	0.42

The hottest, coldest and wettest days

Hottest day: 102°F; 2 August 2026
Coldest night: 52°F; 5 August 2026, 4 August 2026
Wettest day: 1.95 in; 16 August 2026

Every month, season and year

Months

Seasons

Years

Rapid City Downtown, SD the day's answers

All-time records

Every answer in words

August 2026 brought 4.16 in of precipitation in Rapid City Downtown, SD, the wettest August since 2014, 7th wettest of 115.
The hottest day of August 2026 in Rapid City Downtown, SD: 102°F on Sunday 2 August 2026.
The coldest night of August 2026 in Rapid City Downtown, SD: a low of 52°F on Wednesday 5 August 2026 and Tuesday 4 August 2026.
The wettest day of August 2026 in Rapid City Downtown, SD: 1.95 in on Sunday 16 August 2026.