Grayson County, TX: Current UV Index and Hourly Forecast

• USA →
• Texas →
• Grayson County

As of 11:49 PM CDT on June 28, 2026, all 18 cities in Grayson County, TX 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 Grayson County, TX is expected to be 11.3 in Gunter between 1:00 PM - 2:00 PM CDT tomorrow.

Search Cities in Grayson County, TX

Current UV Index in Cities in Grayson County, TX

• Bells - 0
• Collinsville - 0
• Denison - 0
• Dorchester - 0
• Gunter - 0
• Howe - 0
• Knollwood - 0
• Pottsboro - 0
• Preston - 0
• Sadler - 0
• Sherman - 0
• Sherwood Shores - 0
• Southmayd - 0
• Tioga - 0
• Tom Bean - 0
• Van Alstyne - 0
• Whitesboro - 0
• Whitewright - 0