September Rainfall and Precipitation in South Dakota
South Dakota Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in South Dakota - and find the best time to visit. See also: South Dakota weather by month.
Best Places to Visit in South Dakota in September
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across South Dakota.
Monthly precipitation
0 mm (0 in) dry → 150 mm (5.9 in) wet
Marker color shows total monthly precipitation in September: pale blue is dry, deep blue is wet.
South Dakota precipitation in September: frequently asked questions
How much rainfall does South Dakota, the United States of America receive in September?
Sioux Falls stays mostly dry in September, with average rainfall close to 71 mm (2.8 in).
How many days does it rain in South Dakota, the United States of America in September?
On average, Sioux Falls has about 9 days days of rain in September.
Is September part of the rainy season in South Dakota, the United States of America?
Not really. September is outside the wettest stretch of the year in South Dakota, the United States of America.
What is the wettest city in September in South Dakota, the United States of America?
Based on our records, Vermillion receives the most rainfall in South Dakota, the United States of America in September, averaging about 78 mm (3.1 in).
What is the driest city in September in South Dakota, the United States of America?
In our records, Wall stands out as the driest city in South Dakota, the United States of America for September, averaging just 29 mm (1.1 in).
Interested in more climate information?
We have much more information about the climate in South Dakota.
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