Mosquito season in Orange County, VA: when it starts and ends
Mosquito months in Orange County
In a normal year mosquito season in Orange County, VA starts around March 30 and ends around November 5, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Orange County, and when
- Start tipping out standing water weekly by March 16.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 5.
- No West Nile cases since 2016, so bites in Orange County are a nuisance; check window screens.
Orange County against the rest of VA
Orange County has the 61st longest season of 133 VA counties, at 220 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 56°F.
- Charlottesville city: March 29 to November 6 (221 days, 0 WNV)
- Danville city: March 30 to November 6 (221 days, 0 WNV)
- Caroline County: March 31 to November 6 (220 days, 0 WNV)
- King George County: March 31 to November 6 (220 days, 0 WNV)
West Nile in Orange County
CDC ArboNET lists no human West Nile cases for Orange County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 5 of those years.
See how the dates are worked out, and when the season starts across the US.