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

Mosquito months in Prince George County

In a normal year mosquito season in Prince George County, VA starts around March 29 and ends around November 12, 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 Prince George 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 12.
• No West Nile cases since 2016, so bites in Prince George County are a nuisance; check window screens.

Prince George County against the rest of VA

Prince George County has the 41st longest season of 133 VA counties, at 228 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 58.7°F.

• Salem city: March 24 to November 7 (228 days, 0 WNV)
• Lunenburg County: March 26 to November 9 (228 days, 0 WNV)
• Brunswick County: March 26 to November 7 (226 days, 0 WNV)
• Greene County: March 26 to November 7 (226 days, 2 WNV)

West Nile in Prince George County

From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Prince George County (1 neuroinvasive) across 1 year. The worst was 2003 with 1; the latest was 2003.

More: how the dates are worked out · when mosquitoes go away for the winter.