Jefferson County, NY: Current UV Index and Hourly Forecast

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As of 8:40 PM EDT on July 9, 2025, all 30 cities in Jefferson County, NY in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Watertown, NY with a reading of 0.1.

Over the next 24 hours, the highest UV Index reading in Jefferson County, NY is expected to be 8.4 in Fort Drum between 1:00 PM - 2:00 PM EDT tomorrow.

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Current UV Index in Cities in Jefferson County, NY

• Adams Center - 0.1
• Alexandria Bay - 0.1
• Belleville - 0.1
• Black River - 0.1
• Calcium - 0.1
• Carthage - 0.1
• Chaumont - 0.1
• Deferiet - 0.1
• Depauville - 0.1
• Dexter - 0.1
• Evans Mills - 0.1
• Felts Mills - 0.1
• Fishers Landing - 0.1
• Fort Drum - 0.1
• Glen Park - 0.1
• Great Bend - 0.1
• Herrings - 0.1
• La Fargeville - 0.1
• Mannsville - 0.1
• Natural Bridge - 0.1
• Oxbow - 0.1
• Pamelia Center - 0.1
• Pierrepont Manor - 0.1
• Plessis - 0.1
• Redwood - 0.1
• Sackets Harbor - 0.1
• Thousand Island Park - 0.1
• Three Mile Bay - 0.1
• Watertown - 0.1
• West Carthage - 0.1