SummerPeak season ~79°F highs
August is one of the best months to visit Sioux Falls, with average highs around 79°F. Long days suit beaches, parks and evenings outdoors.
What's famous here, weighted toward what shines in August.
August is one of the best months to visit Sioux Falls, with average highs around 79°F. Long days suit beaches, parks and evenings outdoors.
Average daytime highs are around 79°F, compared with 84°F in the warmest month. Check the forecast a week out; our planner favors indoor stops on rainy days.
Top picks for August: Falls Park, Palisades State Park, Chief White Crane Recreation Area, Newton Hills State Park, Pierson Ranch Recreation Area.