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South Dakota

South Dakota Weather

Weather in the Great Plains usually includes broad temperature changes, light to moderate precipitation. low humidity and plenty of sunshine.

January is the coldest month in South Dakota as mean temperatures range from 10 degrees in the east to 14 degrees in the west. July is the warmest month across the state with mean temperatures in the mid to high 60s. Daily high temperatures in the low 80s are common central and south.

South Dakota, like North Dakota, occasionally experiences high temperatures near 90 degrees, while extremely harsh winter temperatures below (0 degrees) are quite normal.

Annual precipitation amounts range from 25 - 30 inches in the east and southeast, while central and far-western South Dakota are in the 15 inches range. The notable exception is the Black Hills area, where yearly rain fall often exceeds 35 inches.

For an interesting look at South Dakota precipitation levels, view this precipitation map.

In these selected cities....

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Seasonal Temperature Averages:

HIGH TEMPERATURES ( Fahrenheit/Celsius )

(Jan) 26/-3 (Feb) 30/-1 (Mar) 37/3 (Apr) 52/11

(May) 64/18 (Jun) 73/28 (Jul) 86/30 (Aug) 90/32

(Sep) 83/28 (Oct) 69/20 (Nov) 50/10 (Dec) 38/3

LOW TEMPERATURES ( Fahrenheit/Celsius )

(Jan) 7/-14 (Feb) 10/-12 (Mar) 27/-3 (Apr) 38/3

(May) 40/4 (Jun) 51/10 (Jul) 59/15 (Aug) 61/16

(Sep) 57/14 (Oct) 42/5 (Nov) 31/0 (Dec) 19/-7

South Dakota Photographs

Autumn Trees, Custer State Park, South Dakota, USA

Autumn trees in Custer State Park...
by Walter Bibikow
Buy This at Allposters.com

South Dakota Cities, Counties & Area Codes

City County Area Code
Plankinton Aurora 605
Huron Beadle 605
Martin Bennett 605
Springfield Bon Homme 605
Brookings Brookings 605
Aberdeen Brown 605
Chamberlain Brule 605
Fort Thompson Buffalo 605
Belle Fourche Butte 605
Herreid Campbell 605
Wagner Charles Mix 605
Clark Clark 605
Vermillion Clay 605
Watertown Codington 605
McLaughlin Corson 605
Custer Custer 605
Mitchell Davison 605
Webster Day 605
Clear Lake Deuel 605
Eagle Butte Dewey 605
Corsica Douglas 605
Ipswich Edmunds 605
Hot Springs Fall River 605
Faulkton Faulk 605
Milbank Grant 605
Gregory Gregory 605
Philip Haakon 605
Castlewood Hamlin 605
Miller Hand 605
Alexandria Hanson 605
Buffalo Harding 605
Pierre Hughes 605
Parkston Hutchinson 605
Highmore Hyde 605
Wanblee Jackson 605
Wessington Springs Jerauld 605
Murdo Jones 605
Arlington Kingsbury 605
Madison Lake 605
Spearfish Lawrence 605
Sioux Falls Lincoln 605
Lower Brule Lyman 605
Britton Marshall 605
Salem McCook 605
Eureka McPherson 605
Sturgis Meade 605
White River Mellette 605
Howard Miner 605
Sioux Falls Minnehaha 605
Flandreau Moody 605
Rapid City Pennington 605
Lemmon Perkins 605
Gettysburg Potter 605
Sisseton Roberts 605
Woonsocket Sanborn 605
Pine Ridge Shannon 605
Redfield Spink 605
Fort Pierre Stanley 605
Onida Sully 605
Mission Todd 605
Winner Tripp 605
Parker Turner 605
North Sioux City Union 605
Mobridge Walworth 605
Yankton Yankton 605
Dupree Ziebach 605

About the Author

John Moen is a cartographer who along with his wife are the orignal founders of worldatlas.com. He and his wife, Chris Woolwine-Moen, produced thousands of award-winning maps that are used all over the world and content that aids students, teachers, travelers and parents with their geography and map questions. Today, it's one of the most popular educational sites on the web.

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This page was last updated on July 10, 2020.