October weather forecast and climate
South Dakota, USA

Flag of South Dakota, USA
Flag of South Dakota, USA

Weather in October

October is in the middle of the autumn season in South Dakota, with mild temperatures and unpredictable weather. The average high temperatures are between 55°F (12.8°C) to 62°F (16.7°C), while the average low temperatures are in 32°F (0°C) and 40°F (4.4°C) span.
Rainfall is less as snowfall replaces the rain most of the time. Light snowflakes fall in most places as the state records an average of 1" (25mm) to 2" (51mm) of snow. Mountains easily register 10" (254mm) to 15" (381mm) of snow. Nights are usually cold and see light snow.
Average low temperatures drop below freezing in many places such as Custer at 32°F (0°C), and Porcupine with 31°F (-0.6°C) in western South Dakota.
October is an ideal time to watch sunrise and sunset at Sylvan Lake or spot bison and bighorn sheep around the Wildlife Loop. Brilliant fall colors make the landscape come alive - the green pines and orange aspens in the backdrop of granite hills and narrow roads are simply out of this world, and people are bound to stop their cars and forget time to enjoy the scenery!
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