Average May Temperatures for South Dakota

Average Temperatures for South Dakota in May

Average temperatures for May 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 May temperatures
High °F	Low °F	Place	High °C	Low °C
70	44	Aberdeen	21	7
67	45	Brookings	19	7
70	46	Huron	21	8
70	49	Mitchell	21	9
71	48	Sioux Falls	22	9
73	48	Vermillion	23	9
67	45	Watertown	19	7
68	47	Waubay Wildlife Refuge	20	8
72	48	Yankton	22	9

Central South Dakota

Average daily temperatures in May
High °F	Low °F	Place	High °C	Low °C
69	47	Academy	21	8
68	45	Mobridge	20	7
70	47	Pickstown	21	9
70	45	Pierre	21	7

Western South Dakota

May temperatures: daily averages
High °F	Low °F	Place	High °C	Low °C
61	41	Custer	16	5
65	39	Deadwood	18	4
70	41	Hot Springs	21	5
72	46	Interior	22	8
63	41	Lead	17	5
69	43	Lemmon	21	6
60	42	Mt. Rushmore National Memorial	15	5
60	36	Pactola Reservoir Dam	16	2
69	42	Porcupine	21	5
67	42	Rapid City	19	5
64	42	Spearfish	18	5
66	41	Wind Cave National Park	19	5

Reference

NOAA National Centers for Environmental Information (NCEI). Climate Normals.

Average Temperatures for South Dakota in May

Eastern South Dakota

Central South Dakota

Western South Dakota

Reference

More South Dakota Weather Information