Average August Temperatures for South Dakota

Average temperatures for August at cities, towns and parks throughout South Dakota are listed below in degrees Fahrenheit and Celsius.

You can jump to a separate table for each region of the state: Eastern, Central and Western South Dakota.

The tables give the normals for maximum and minimum temperatures based on weather data collected from 1991 to 2020 by the US National Centers for Environmental Information.

Eastern South Dakota

Average August temperatures
High °F	Low °F	Place	High °C	Low °C
83	57	Aberdeen	28	14
79	57	Brookings	26	14
83	59	Huron	29	15
84	62	Mitchell	29	17
83	61	Sioux Falls	28	16
83	61	Vermillion	29	16
80	58	Watertown	26	14
81	61	Waubay Wildlife Refuge	27	16
85	62	Yankton	29	16

Central South Dakota

Average daily temperatures in August
High °F	Low °F	Place	High °C	Low °C
85	60	Academy	29	16
84	59	Mobridge	29	15
86	62	Pickstown	30	17
87	59	Pierre	30	15

Western South Dakota

August temperatures: daily averages
High °F	Low °F	Place	High °C	Low °C
79	55	Custer	26	13
82	54	Deadwood	28	12
87	55	Hot Springs	31	13
91	60	Interior	33	16
81	55	Lead	27	13
86	57	Lemmon	30	14
78	58	Mt. Rushmore National Memorial	25	14
78	49	Pactola Reservoir Dam	26	9
88	55	Porcupine	31	13
85	56	Rapid City	30	13
83	56	Spearfish	28	13
84	55	Wind Cave National Park	29	13

Average Temperatures for South Dakota in August

Eastern South Dakota

Central South Dakota

Western South Dakota

Reference

More South Dakota Weather Information