Weather in Mound City, SD
Updated 2026-09-26 12:30 local time · ZIP codes 57646
Patchy rain nearby
No government weather alerts were returned for this location at the latest update.
Next hours
60°28% rain62°25% rain66°16% rain69°15% rain
71°14% rain70°14% rain
69°10% rain68°13% rain
71°14% rain
69°12% rain68°14% rain68°16% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 25%).
It feels like 57°F with winds near 9 mph.
69°F, 10% rain chance and 5 mph wind.
Visibility is around 6 mi; gusts may reach 14 mph.
Current temperature is 60°F, wind 9 mph, rain chance up to 25%.
UV index is 2.
Local weather characteristics in Mound City
South Dakota has a continental climate with hot summers, cold winters, frequent wind and strong differences between the Black Hills and the open plains.
Mound City is part of the Midwest weather region. The forecast point is near 45.73°N latitude and 100.07°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Mound City weather today
Patchy rain nearby and 60°F in Mound City, SD. Today's high is 71°F with a 49% rain chance. Winds are around 9 mph with gusts near 14 mph. Relative humidity is 85%, pressure is 29.85 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Mound City
Sunrise is at 07:32 AM and sunset is at 07:30 PM. Tomorrow's forecast calls for Light rain shower with a high near 70°F and a low near 58°F. The maximum rain chance is 76%.