Weather in Sinai, SD
Updated 2026-09-26 10:00 local time · ZIP codes 57061
Light rain shower
No government weather alerts were returned for this location at the latest update.
Next hours
57°49% rain
57°34% rain
58°35% rain58°43% rain60°31% rain60°33% rain60°32% rain60°30% rain60°31% rain60°34% rain
60°43% rain59°39% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance reaches about 49% over the next 12 hours.
It feels like 52°F with winds near 12 mph.
60°F, 30% rain chance and 10 mph wind.
Visibility is around 6 mi; gusts may reach 24 mph.
Current temperature is 57°F, wind 12 mph, rain chance up to 49%.
UV index is 0.
Local weather characteristics in Sinai
South Dakota has a continental climate with hot summers, cold winters, frequent wind and strong differences between the Black Hills and the open plains.
Sinai is part of the Midwest weather region. The forecast point is near 44.24°N latitude and 97.07°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.
Sinai weather today
Light rain shower and 57°F in Sinai, SD. Today's high is 60°F with a 93% rain chance. Winds are around 12 mph with gusts near 24 mph. Relative humidity is 98%, pressure is 29.94 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Sinai
Sunrise is at 07:20 AM and sunset is at 07:18 PM. Tomorrow's forecast calls for Fog with a high near 67°F and a low near 58°F. The maximum rain chance is 47%.