Weather in Eureka, South Dakota
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 05:27 PM ET · Refreshes every hour
81°F
Partly cloudy
Feels like 79°F
29%
Humidity
10 mph
Wind Speed
About Weather in Eureka
Eureka is located in South Dakota (coordinates: 45.771153°N, 99.620686°W). Weather data is sourced from Open-Meteo, a free and open meteorological API using data from national weather services including NOAA.
All temperatures are displayed in Fahrenheit. Wind speed is in miles per hour.