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

Mosquito months in Halifax County

In a normal year mosquito season in Halifax County, VA starts around March 29 and ends around November 7, about 32 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 Halifax County, and when

• Start tipping out standing water weekly by March 15.
• Book any yard treatment for late March, ahead of the July peak.
• Repellent can go away after November 7.
• No West Nile cases since 2016, so bites in Halifax County are a nuisance; check window screens.

Halifax County against the rest of VA

Halifax County has the 55th longest season of 133 VA counties, at 223 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 58.3°F.

• Appomattox County: March 28 to November 6 (223 days, 0 WNV)
• Charlotte County: March 29 to November 7 (223 days, 0 WNV)
• Arlington County: March 30 to November 8 (223 days, 5 WNV)
• Hanover County: March 30 to November 8 (223 days, 1 WNV)

West Nile in Halifax County

CDC ArboNET lists no human West Nile cases for Halifax County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 3 of those years.

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