Weather in Saint Onge, SD
Updated 2026-09-26 10:45 local time · ZIP codes 57779
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
65°1% rain70°1% rain71°1% rain73°0% rain74°0% rain74°1% rain73°0% rain69°1% rain
64°1% rain63°1% rain61°1% rain61°1% 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 1%).
It feels like 51°F with winds near 22 mph.
69°F, 1% rain chance and 4 mph wind.
Visibility is around 6 mi; gusts may reach 28 mph.
Current temperature is 65°F, wind 22 mph, rain chance up to 1%.
UV index is 2.
Local weather characteristics in Saint Onge
South Dakota has a continental climate with hot summers, cold winters, frequent wind and strong differences between the Black Hills and the open plains.
Saint Onge is part of the Midwest weather region. The forecast point is near 44.55°N latitude and 103.72°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.
Saint Onge weather today
Sunny and 65°F in Saint Onge, SD. Today's high is 74°F with a 2% rain chance. Winds are around 22 mph with gusts near 28 mph. Relative humidity is 41%, pressure is 29.85 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Saint Onge
Sunrise is at 06:46 AM and sunset is at 06:45 PM. Tomorrow's forecast calls for Overcast with a high near 67°F and a low near 54°F. The maximum rain chance is 15%.