Sioux Falls, S.D. – Storms could rattle parts of South Dakota by Sunday afternoon, bringing quarter-size hail, 60 mph gusts, and travel concerns near Huron. A summer weather alert is in place as instability ahead of a cold front moves through the region.
According to the National Weather Service in Sioux Falls, isolated to scattered thunderstorms are likely to form after 5 p.m. Sunday, mainly north of a line from Yankton to Windom. While severe coverage is uncertain, any storms that develop could rapidly intensify. Gusty winds may down branches or impact travel along U.S. Highway 14 and surrounding county roads.
Temperatures in Sioux Falls will climb to 84°F Sunday under mostly cloudy skies before storms roll in during the afternoon. Heat and humidity will stay elevated through much of the week, with high pressure returning Monday.
Looking ahead to the 4th of July, conditions are trending warm and mostly dry. Temperatures may approach 91°F by Thursday, with only a slight chance of showers Wednesday and Independence Day. It’s shaping up to be a typical hot July celebration — but outdoor plans could briefly pause if midweek storms fire up.
🌤 6-Day Forecast for Sioux Falls (June 29–July 4)
- Sunday (June 29): High 84°F, chance of afternoon storms. Hail and gusts possible.
- Monday: Sunny, high 87°F. Calm and dry start to the week.
- Tuesday: Mostly sunny, high 87°F. Slight chance of storms late.
- Wednesday: 30% chance of storms after 1 p.m., high 87°F.
- Thursday: Mostly sunny, high 91°F. Low storm risk, hot.
- Friday (4th of July): Mostly sunny, high near 89°F. Dry and breezy.
