Mosquito season in Clay County, WV: when it starts and ends
Mosquito months in Clay County
In a normal year mosquito season in Clay County, WV starts around April 6 and ends around October 29, about 29 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Clay County, and when
- Start tipping out standing water weekly by March 23.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after October 29.
- No West Nile cases since 2016, so bites in Clay County are a nuisance; check window screens.
Clay County against the rest of WV
Clay County has the 12th longest season of 55 WV counties, at 206 days against 224 in Cabell County and 162 in Randolph County. Its mean temperature is 53.8°F.
- Wyoming County: April 4 to October 29 (208 days, 1 WNV)
- Berkeley County: April 6 to October 30 (207 days, 3 WNV)
- Jefferson County: April 7 to October 29 (206 days, 1 WNV)
- Braxton County: April 8 to October 31 (206 days, 0 WNV)
West Nile in Clay County
CDC ArboNET lists no human West Nile cases for Clay County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 1 of those years.
More: how the dates are worked out · when mosquitoes go away for the winter.