Mosquito season in Ritchie County, WV: when it starts and ends
Mosquito months in Ritchie County
In a normal year mosquito season in Ritchie County, WV starts around April 15 and ends around October 26, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Ritchie County, and when
- Start tipping out standing water weekly by April 1.
- 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 Ritchie County are a nuisance; check window screens.
Ritchie County against the rest of WV
Ritchie County has the 35th longest season of 55 WV counties, at 194 days against 224 in Cabell County and 162 in Randolph County. Its mean temperature is 52.9°F.
- Calhoun County: April 15 to October 26 (194 days, 0 WNV)
- Marshall County: April 15 to October 26 (194 days, 0 WNV)
- Hancock County: April 14 to October 24 (193 days, 0 WNV)
- Mineral County: April 16 to October 25 (192 days, 0 WNV)
West Nile in Ritchie County
CDC ArboNET lists no human West Nile cases for Ritchie 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.