Weather in Castlewood, SD
Updated 2026-09-26 12:30 local time · ZIP codes 57223
Patchy rain nearby
No government weather alerts were returned for this location at the latest update.
Next hours
58°35% rain58°40% rain58°35% rain59°33% rain60°31% rain60°32% rain59°39% rain59°33% rain
59°33% rain58°34% rain
58°43% rain59°42% 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 43%.
It feels like 53°F with winds near 12 mph.
60°F, 31% rain chance and 11 mph wind.
Visibility is around 6 mi; gusts may reach 23 mph.
Current temperature is 58°F, wind 12 mph, rain chance up to 43%.
UV index is 1.
Local weather characteristics in Castlewood
South Dakota has a continental climate with hot summers, cold winters, frequent wind and strong differences between the Black Hills and the open plains.
Castlewood is part of the Midwest weather region. The forecast point is near 44.72°N latitude and 97.03°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.
Castlewood weather today
Patchy rain nearby and 58°F in Castlewood, SD. Today's high is 60°F with a 89% rain chance. Winds are around 12 mph with gusts near 23 mph. Relative humidity is 97%, pressure is 29.93 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Castlewood
Sunrise is at 07:20 AM and sunset is at 07:18 PM. Tomorrow's forecast calls for Patchy rain nearby with a high near 70°F and a low near 58°F. The maximum rain chance is 46%.