Mosquito season in Amherst County, VA: when it starts and ends
Mosquito months in Amherst County
In a normal year mosquito season in Amherst County, VA starts around April 9 and ends around November 1, about 29 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Amherst County, and when
- Start tipping out standing water weekly by March 26.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after November 1.
- No West Nile cases since 2016, so bites in Amherst County are a nuisance; check window screens.
Amherst County against the rest of VA
Amherst County has the 94th longest season of 133 VA counties, at 206 days against 257 in Norfolk city and 172 in Highland County. Its mean temperature is 55.7°F.
- Winchester city: April 6 to October 30 (207 days, 4 WNV)
- Washington County: April 7 to October 30 (206 days, 0 WNV)
- Pittsylvania County: April 9 to November 1 (206 days, 0 WNV)
- Rockbridge County: April 9 to November 1 (206 days, 0 WNV)
West Nile in Amherst County
CDC ArboNET lists no human West Nile cases for Amherst 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.