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.

South Dakota Temperatures
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