Sully County, SD: Current UV Index and Hourly Forecast

As of 6:33 PM CST on January 28, 2026, all 3 cities in Sully County, SD in our database have a UV Index reading of 0, indicating no radiation from the sun.

Over the next 24 hours, the highest UV Index reading in Sully County, SD is expected to be 1.9 in Cow Creek between 1:00 PM - 2:00 PM CST tomorrow.

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UV Index Risk Levels
Range0 - 23 - 56 - 78 - 1011+
Color
RiskLowModerateHighVery HighExtreme
UV Index in Sully County, SD as of 6:33 PM CST, January 28, 2026

Current UV Index in Cities in Sully County, SD

6:33 PM CST, January 28, 2026