Mosquito season in Surry County, VA: when it starts and ends

Mosquito months in Surry County

In a normal year mosquito season in Surry County, VA starts around March 26 and ends around November 14, about 33 weeks.

1. Jan
2. Feb
3. Mar
4. Apr
5. May
6. Jun
7. Jul
8. Aug
9. Sep
10. Oct
11. Nov
12. Dec

What to do in Surry County, and when

• Start tipping out standing water weekly by March 12.
• Book any yard treatment for late March, ahead of the July peak.
• Repellent can go away after November 14.
• No West Nile cases since 2016, so bites in Surry County are a nuisance; check window screens.

Surry County against the rest of VA

Surry County has the 28th longest season of 133 VA counties, at 233 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 59.3°F.

• Northumberland County: March 25 to November 14 (234 days, 1 WNV)
• Gloucester County: March 26 to November 14 (234 days, 0 WNV)
• Mathews County: March 27 to November 15 (233 days, 1 WNV)
• Mecklenburg County: March 24 to November 11 (232 days, 2 WNV)

West Nile in Surry County

CDC ArboNET lists no human West Nile cases for Surry County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 2 of those years.

Background: when mosquitoes go away for the winter; how the dates are worked out.