Weather in Eureka, SD
Updated 2026-09-26 10:00 local time · ZIP codes 57437
Patchy rain nearby
No government weather alerts were returned for this location at the latest update.
Next hours
55°34% rain
56°33% rain58°32% rain61°27% rain61°25% rain63°22% rain64°20% rain65°24% rain
65°10% rain64°21% rain
68°20% rain67°21% 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 52°F with winds near 9 mph.
65°F, 10% rain chance and 7 mph wind.
Visibility is around 6 mi; gusts may reach 22 mph.
Current temperature is 55°F, wind 9 mph, rain chance up to 34%.
UV index is 0.
Local weather characteristics in Eureka
South Dakota has a continental climate with hot summers, cold winters, frequent wind and strong differences between the Black Hills and the open plains.
Eureka is part of the Midwest weather region. The forecast point is near 45.77°N latitude and 99.62°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.
Eureka weather today
Patchy rain nearby and 55°F in Eureka, SD. Today's high is 68°F with a 60% rain chance. Winds are around 9 mph with gusts near 22 mph. Relative humidity is 96%, pressure is 29.86 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Eureka
Sunrise is at 07:30 AM and sunset is at 07:29 PM. Tomorrow's forecast calls for Overcast with a high near 68°F and a low near 60°F. The maximum rain chance is 61%.