Sioux Falls weather in September
Mild and comfortable, with occasional showers. Average highs of 24°C and lows of 14°C, with around 8 rainy days expected throughout the month.
✦ This is a recommended month to visit Sioux Falls. The combination of weather, atmosphere and experience is at its best.
Average high
24°C
Average low
14°C
Rainy days
8 days
Best months to visit
June, July, August, September
What to do in Sioux Falls in September
Whatever the weather, Sioux Falls rewards curious visitors. Here are some of the best ways to spend your time:
Hike trails to multiple waterfall viewing areas
Explore Falls Park's scenic riverside paths and gardens
Visit the Sioux Falls Art Museum in a historic building
Tour nearby historic sites like Fort Sumter battlefield
Paddleboard the Big Sioux River
Shop and dine in downtown's walkable core
What to pack for September
Light layers work well — T-shirts and shorts for the day, a light jacket for evenings. Comfortable walking shoes are a must. Bring a compact umbrella just in case.
Browse other months
January
-3C
Cold, with occasional showers.
February
-1C
Cold, with occasional showers.
March
7C
Cold, with occasional showers.
April
13C
Cool, with occasional showers.
May
20C
Mild and comfortable, with some rainy days.
Recommended
June
27C
Warm and pleasant, with some rainy days.
Recommended
July
28C
Warm and pleasant, with occasional showers.
Recommended
August
27C
Warm and pleasant, with some rainy days.
Recommended
September (you are here)
24C
Mild and comfortable, with occasional showers.
October
15C
Cool, with occasional showers.
November
7C
Cold, with occasional showers.
December
0C
Cold, with occasional showers.
Book your September trip to Sioux Falls
Find hotels, tours and experiences for the perfect escape.
