Mosquito season in York County, VA: when it starts and ends
Mosquito months in York County
In a normal year mosquito season in York County, VA starts around March 21 and ends around November 17, about 35 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in York County, and when
- Start tipping out standing water weekly by March 7.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 17.
- No West Nile cases since 2016, so bites in York County are a nuisance; check window screens.
York County against the rest of VA
York County has the 16th longest season of 133 VA counties, at 242 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 59.3°F.
- Greensville County: March 20 to November 17 (242 days, 0 WNV)
- Emporia city: March 20 to November 17 (242 days, 0 WNV)
- Petersburg city: March 20 to November 14 (239 days, 1 WNV)
- Colonial Heights city: March 20 to November 14 (238 days, 0 WNV)
West Nile in York County
CDC ArboNET lists no human West Nile cases for York County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 10 of those years.
More: how the dates are worked out · when mosquitoes go away for the winter.