Weather in Long Valley, SD
Updated 2026-09-26 10:00 local time · ZIP codes 57547
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
66°3% rain68°2% rain71°1% rain73°1% rain74°1% rain75°1% rain74°1% rain73°1% rain75°2% rain
79°3% rain77°3% rain77°4% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 4%).
It feels like 61°F with winds near 9 mph.
71°F, 1% rain chance and 3 mph wind.
Visibility is around 6 mi; gusts may reach 19 mph.
Current temperature is 66°F, wind 9 mph, rain chance up to 4%.
UV index is 3.
Local weather characteristics in Long Valley
South Dakota has a continental climate with hot summers, cold winters, frequent wind and strong differences between the Black Hills and the open plains.
Long Valley is part of the Midwest weather region. The forecast point is near 43.46°N latitude and 101.49°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.
Long Valley weather today
Sunny and 66°F in Long Valley, SD. Today's high is 79°F with a 5% rain chance. Winds are around 9 mph with gusts near 11 mph. Relative humidity is 58%, pressure is 29.79 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Long Valley
Sunrise is at 06:37 AM and sunset is at 06:36 PM. Tomorrow's forecast calls for Sunny with a high near 76°F and a low near 59°F. The maximum rain chance is 7%.