Weather in Grenville, SD
Updated 2026-09-26 11:00 local time · ZIP codes 57239
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
56°33% rain57°33% rain
58°33% rain61°26% rain62°26% rain62°27% rain61°27% rain59°31% rain59°34% rain
58°44% rain58°39% rain58°40% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
There is a moderate rain chance, peaking near 44%.
It feels like 51°F with winds near 13 mph.
62°F, 26% rain chance and 13 mph wind.
Visibility is around 6 mi; gusts may reach 24 mph.
Current temperature is 56°F, wind 13 mph, rain chance up to 44%.
UV index is 1.
Local weather characteristics in Grenville
South Dakota has a continental climate with hot summers, cold winters, frequent wind and strong differences between the Black Hills and the open plains.
Grenville is part of the Midwest weather region. The forecast point is near 45.47°N latitude and 97.39°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.
Grenville weather today
Overcast and 56°F in Grenville, SD. Today's high is 62°F with a 89% rain chance. Winds are around 13 mph with gusts near 24 mph. Relative humidity is 96%, pressure is 29.92 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Grenville
Sunrise is at 07:21 AM and sunset is at 07:20 PM. Tomorrow's forecast calls for Patchy rain nearby with a high near 69°F and a low near 60°F. The maximum rain chance is 46%.