Weather in Onaka, SD
Updated 2026-09-26 10:00 local time · ZIP codes 57466
Patchy rain nearby
No government weather alerts were returned for this location at the latest update.
Next hours
56°34% rain58°32% rain61°27% rain63°23% rain
63°23% rain65°19% rain67°18% rain67°18% rain
65°13% rain69°18% rain
70°13% rain
69°19% 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 34%.
It feels like 53°F with winds near 9 mph.
65°F, 13% rain chance and 5 mph wind.
Visibility is around 6 mi; gusts may reach 21 mph.
Current temperature is 56°F, wind 9 mph, rain chance up to 34%.
UV index is 0.
Local weather characteristics in Onaka
South Dakota has a continental climate with hot summers, cold winters, frequent wind and strong differences between the Black Hills and the open plains.
Onaka is part of the Midwest weather region. The forecast point is near 45.19°N latitude and 99.47°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.
Onaka weather today
Patchy rain nearby and 56°F in Onaka, SD. Today's high is 70°F with a 68% rain chance. Winds are around 9 mph with gusts near 21 mph. Relative humidity is 96%, pressure is 29.86 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Onaka
Sunrise is at 07:29 AM and sunset is at 07:28 PM. Tomorrow's forecast calls for Fog with a high near 67°F and a low near 58°F. The maximum rain chance is 69%.