Mosquito season in Caroline County, VA: when it starts and ends
Mosquito months in Caroline County
In a normal year mosquito season in Caroline County, VA starts around March 31 and ends around November 6, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Caroline County, and when
- Start tipping out standing water weekly by March 17.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 6.
- No West Nile cases since 2016, so bites in Caroline County are a nuisance; check window screens.
Caroline County against the rest of VA
Caroline County has the 62nd longest season of 133 VA counties, at 220 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 56.8°F.
- Danville city: March 30 to November 6 (221 days, 0 WNV)
- Orange County: March 30 to November 5 (220 days, 0 WNV)
- King George County: March 31 to November 6 (220 days, 0 WNV)
- Spotsylvania County: March 31 to November 6 (220 days, 0 WNV)
West Nile in Caroline County
CDC ArboNET lists no human West Nile cases for Caroline 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.