Average August Temperature in Rapid City by Year

This page contains a list of the average monthly high and low temperatures in Rapid City, South Dakota for the month of August each year between 1948 and 2023. It is based on NOAA data.

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What Was the Hottest August Ever in Rapid City?

1983 was the warmest August in the history of Rapid City, South Dakota. The average daily high temperature was 91.7 °F, and the average low was 64.2 °F.

What Was the Coldest August Ever in Rapid City?

1992 was the coolest August in the history of Rapid City, South Dakota. The average daily high temperature was 80.6 °F, and the average low was 51.1 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	41	86.5	56.1
2022	11	90.3	58.1
2021	38	88.1	55.0
2020	36	89.2	55.3
2019	68	79.9	55.7
2018	71	82.1	53.0
2017	62	83.7	53.7
2016	55	83.9	55.0
2015	51	84.5	55.2
2014	58	81.4	57.1
2013	26	86.1	59.2
2012	32	89.1	55.7
2011	24	88.1	58.1
2010	29	87.9	57.1
2009	72	82.7	52.4
2008	44	85.9	55.8
2007	12	87.4	60.9
2006	25	88.2	57.9
2005	45	86.0	55.6
2004	67	83.2	52.8
2003	4	91.5	60.3
2002	42	87.3	55.0
2001	9	90.3	58.5
2000	8	90.3	58.5
1999	40	86.2	56.6
1998	35	86.4	58.1
1997	61	80.6	56.8
1996	22	89.3	57.0
1995	20	89.3	57.8
1994	21	88.9	57.8
1993	63	81.9	55.2
1992	76	80.6	51.1
1991	14	88.8	59.2
1990	19	89.1	58.4
1989	23	88.7	57.4
1988	30	88.5	56.5
1987	66	81.7	54.5
1986	53	84.7	54.6
1985	60	83.0	55.0
1984	6	89.8	59.8
1983	1	91.7	64.2
1982	49	82.1	58.3
1981	50	83.0	57.0
1980	64	81.9	55.1
1979	65	80.5	56.4
1978	52	84.7	54.6
1977	74	79.7	52.3
1976	27	87.2	58.0
1975	48	85.8	54.8
1974	70	82.8	52.5
1973	10	89.6	58.9
1972	59	83.2	55.0
1971	15	89.9	57.8
1970	16	90.1	57.5
1969	18	89.5	58.0
1968	73	80.7	53.3
1967	47	85.4	55.8
1966	75	79.1	52.7
1965	46	83.8	57.5
1964	57	84.5	54.4
1963	17	88.6	58.9
1962	43	86.3	56.0
1961	2	92.0	62.4
1960	33	87.3	57.5
1959	5	91.3	60.0
1958	7	89.2	60.2
1957	37	84.1	59.1
1956	56	82.2	56.7
1955	3	90.5	61.8
1954	28	86.6	58.4
1953	31	86.4	58.6
1952	34	86.5	58.3
1951	54	82.3	56.7
1950	69	81.8	53.5
1949	13	89.7	58.6
1948	39	85.4	57.5

Weather Station Details

Years	Station	Coordinates
1948–2024	Rapid City Regional Airport	location