Sumner County, TN: Current UV Index and Hourly Forecast

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As of 10:08 PM CST on March 6, 2026, all 16 cities in Sumner County, TN 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 Sumner County, TN is expected to be 4.8 in Gallatin between 10:00 AM - 11:00 AM CST tomorrow.

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Current UV Index in Cities in Sumner County, TN

• Bethpage - 0
• Bransford - 0
• Castalian Springs - 0
• Cottontown - 0
• Fairfield - 0
• Gallatin - 0
• Goodlettsville - 0
• Graball - 0
• Hendersonville - 0
• Millersville - 0
• Mitchellville - 0
• New Deal - 0
• Portland - 0
• Shackle Island - 0
• Walnut Grove - 0
• Westmoreland - 0