Lake County, SD: Current UV Index and Hourly Forecast

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As of 4:43 PM CDT on May 23, 2026, all 11 cities in Lake County, SD in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Madison, SD with a reading of 4.8.

Over the next 24 hours, the highest UV Index reading in Lake County, SD is expected to be 7.7 in Rustic Acres Colony between 1:00 PM - 2:00 PM CDT tomorrow.

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Current UV Index in Cities in Lake County, SD

• Brant Lake - 4.8
• Brant Lake South - 4.8
• Chester - 4.8
• Graceville Colony - 4.8
• Lake Madison - 4.8
• Madison - 4.8
• Nunda - 4.8
• Ramona - 4.8
• Rustic Acres Colony - 4.8
• Wentworth - 4.8
• Winfred - 4.8