Mosquito season in Greenbrier County, WV: when it starts and ends
Mosquito months in Greenbrier County
In a normal year mosquito season in Greenbrier County, WV starts around April 19 and ends around October 20, about 26 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Greenbrier County, and when
- Start tipping out standing water weekly by April 5.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 20.
- No West Nile cases since 2016, so bites in Greenbrier County are a nuisance; check window screens.
Greenbrier County against the rest of WV
Greenbrier County has the 46th longest season of 55 WV counties, at 184 days against 224 in Cabell County and 162 in Randolph County. Its mean temperature is 50.7°F.
- Tyler County: April 20 to October 23 (186 days, 0 WNV)
- Preston County: April 18 to October 20 (184 days, 0 WNV)
- Webster County: April 21 to October 22 (184 days, 0 WNV)
- Wetzel County: April 22 to October 22 (183 days, 0 WNV)
West Nile in Greenbrier County
CDC ArboNET lists no human West Nile cases for Greenbrier County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 5 of those years.
More: how the dates are worked out · when mosquitoes go away for the winter.