Sumner County, TN: Current UV Index and Hourly Forecast

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As of 9:24 AM CDT on June 15, 2026, all 16 cities in Sumner County, TN in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Hendersonville, TN with a reading of 3.7.

Over the next 24 hours, the highest UV Index reading in Sumner County, TN is expected to be 10.5 in Hendersonville between 1:00 PM - 2:00 PM CDT today.

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Current UV Index in Cities in Sumner County, TN

• Bethpage - 3.7
• Bransford - 3.7
• Castalian Springs - 3.7
• Cottontown - 3.7
• Fairfield - 3.7
• Gallatin - 3.7
• Goodlettsville - 3.7
• Graball - 3.7
• Hendersonville - 3.7
• Millersville - 3.7
• Mitchellville - 3.7
• New Deal - 3.7
• Portland - 3.7
• Shackle Island - 3.7
• Walnut Grove - 3.7
• Westmoreland - 3.7