Sioux Falls, S.D. – Chilly air and patchy frost are expected across eastern South Dakota and neighboring states this weekend, with river valley fog likely reducing visibility through Sunday morning. Drivers should prepare for slick morning commutes, particularly in low-lying areas.
According to the National Weather Service in Sioux Falls, patchy frost and dense fog could form overnight in northwest Iowa, southwest Minnesota, northeast Nebraska, and much of eastern South Dakota. Temperatures will dip into the upper 30s tonight before rebounding into the 70s and low 80s during the day.
The quiet stretch will end early next week as thunderstorms build Monday afternoon. Forecasters warn that some storms may turn strong to severe, bringing gusty winds and brief heavy rain. Additional rounds of thunderstorms remain possible Tuesday and beyond, raising concerns for outdoor events and evening travel.
Residents are advised to avoid early-morning travel in fog-prone areas, allow extra time for school drop-offs, and monitor updates on potential severe weather Monday.
Warnings and advisories could be issued as storm chances increase through midweek.
Five Day Forecast for Sioux Falls, SD
- Saturday: Patchy fog early, then mostly sunny, high 65. Low 38, clear.
- Sunday: Sunny, high 71. Increasing clouds at night, low 56.
- Monday: Partly sunny, high 79. Afternoon thunderstorms possible. Low 60, storms likely overnight.
- Tuesday: Mostly sunny, high 81. Low 59, mostly clear.
- Wednesday: Mostly sunny, high 81. Low 62, partly cloudy.
