Weather in Mount Vernon, SD
Updated 2026-09-26 23:00 local time · ZIP codes 57363
Smoky haze
No government weather alerts were returned for this location at the latest update.
Next hours
84°11% rain
84°19% rain84°22% rain
83°31% rain82°56% rain
82°67% rain83°58% rain82°23% rain
82°23% rain
83°48% rain83°48% rain
85°21% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance reaches about 67% over the next 12 hours.
It feels like 92°F with winds near 9 mph.
85°F, 21% rain chance and 7 mph wind.
Visibility is around 3 mi; gusts may reach 11 mph.
Current temperature is 84°F, wind 9 mph, rain chance up to 67%.
UV index is 0.
Local weather characteristics in Mount Vernon
South Dakota has a continental climate with hot summers, cold winters, frequent wind and strong differences between the Black Hills and the open plains.
Mount Vernon is part of the Midwest weather region. The forecast point is near 1.34°N latitude and 103.90°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.
Mount Vernon weather today
Smoky haze and 84°F in Mount Vernon, SD. Today's high is 87°F with a 76% rain chance. Winds are around 9 mph with gusts near 11 mph. Relative humidity is 76%, pressure is 29.88 inHg, and visibility is about 3 miles.
Tonight and tomorrow in Mount Vernon
Sunrise is at 06:52 AM and sunset is at 06:58 PM. Tomorrow's forecast calls for Light rain shower with a high near 85°F and a low near 82°F. The maximum rain chance is 83%.