Sioux Falls, S.D. – Showers and thunderstorms will push across South Dakota through the Labor Day holiday, bringing a risk of heavy rainfall and dangerous lightning for travelers and outdoor plans. Some storms could develop into strong cells late Saturday and continue in waves through Tuesday.
According to the National Weather Service in Sioux Falls, the greatest rainfall chances will hit Sunday afternoon into Labor Day, with a 40 to 50 percent chance of storms nearly each day. Severe weather is not expected to be widespread, but forecasters warn a few weak funnel clouds could form in developing storms.
The unsettled stretch will impact central and eastern South Dakota the most, with scattered thunderstorms also reaching into northwest Iowa and southwest Minnesota. Sioux Falls and nearby communities along I-29 should prepare for periods of heavy rain that could cause ponding on roads and slower travel times.
Holiday campers and those attending outdoor events are urged to keep a close eye on changing skies, seek shelter quickly when thunder is heard, and avoid low-lying areas that could flood during heavier downpours.
The storm pattern is expected to break by midweek, when drier air and sunshine return to the region. More updates may follow if additional advisories are issued.
Five Day Forecast for Sioux Falls, SD
- Saturday: Mostly cloudy, chance of showers and thunderstorms after 4 p.m. High near 78.
- Saturday Night: Showers and storms likely. Low near 62.
- Sunday: Showers and thunderstorms continue, mainly after 1 p.m. High near 72.
- Labor Day (Monday): Showers and storms possible throughout the day. High near 72, low near 57.
- Tuesday: Partly sunny with a chance of afternoon thunderstorms. High near 76.
