Weather in Castlewood, South Dakota
Live weather conditions. Source: Open-Meteo
Updated May 24, 2026 · 06:35 PM ET · Refreshes every hour
85°F
Clear sky
Feels like 79°F
26%
Humidity
11 mph
Wind Speed
About Weather in Castlewood
Castlewood is located in South Dakota (coordinates: 44.724158°N, 97.03092°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.