Mosquito season in Mason County, WV: when it starts and ends
Mosquito months in Mason County
In a normal year mosquito season in Mason County, WV starts around April 17 and ends around October 26, about 27 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Mason County, and when
- Start tipping out standing water weekly by April 3.
- Book any yard treatment for mid April, ahead of the July peak.
- Repellent can go away after October 26.
- No West Nile cases since 2016, so bites in Mason County are a nuisance; check window screens.
Mason County against the rest of WV
Mason County has the 38th longest season of 55 WV counties, at 192 days against 224 in Cabell County and 162 in Randolph County. Its mean temperature is 52.7°F.
- Hancock County: April 14 to October 24 (193 days, 0 WNV)
- Mineral County: April 16 to October 25 (192 days, 0 WNV)
- Wirt County: April 18 to October 26 (191 days, 0 WNV)
- Monroe County: April 15 to October 22 (190 days, 0 WNV)
West Nile in Mason County
CDC ArboNET lists no human West Nile cases for Mason County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 3 of those years.
More: how the dates are worked out · when the season starts across the US.