Mosquito season in Richmond County, VA: when it starts and ends
Mosquito months in Richmond County
In a normal year mosquito season in Richmond County, VA starts around March 29 and ends around November 10, about 32 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Richmond 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 10.
- No West Nile cases since 2016, so bites in Richmond County are a nuisance; check window screens.
Richmond County against the rest of VA
Richmond County has the 46th longest season of 133 VA counties, at 226 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 58.2°F.
- Stafford County: March 27 to November 8 (226 days, 0 WNV)
- Essex County: March 29 to November 10 (226 days, 0 WNV)
- Westmoreland County: March 29 to November 10 (226 days, 1 WNV)
- Fredericksburg city: March 28 to November 7 (224 days, 1 WNV)
West Nile in Richmond County
CDC ArboNET lists no human West Nile cases for Richmond County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 2 of those years.
See how the dates are worked out, and when the season starts across the US.