Mosquito season in Randolph County, WV: when it starts and ends

Mosquito months in Randolph County

In a normal year mosquito season in Randolph County, WV starts around May 3 and ends around October 12, about 23 weeks.

1. Jan
2. Feb
3. Mar
4. Apr
5. May
6. Jun
7. Jul
8. Aug
9. Sep
10. Oct
11. Nov
12. Dec

What to do in Randolph County, and when

• Start tipping out standing water weekly by April 19.
• Book any yard treatment for early May, ahead of the July peak.
• Repellent can go away after October 12.
• No West Nile cases since 2016, so bites in Randolph County are a nuisance; check window screens.

Randolph County against the rest of WV

Randolph County has the 55th longest season of 55 WV counties, at 162 days against 224 in Cabell County and 162 in Randolph County. Its mean temperature is 48.4°F.

• Pocahontas County: April 30 to October 14 (167 days, 0 WNV)
• Tucker County: April 30 to October 11 (164 days, 0 WNV)

West Nile in Randolph County

CDC ArboNET lists no human West Nile cases for Randolph County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 2 of those years.

Background: when the season starts across the US; how the dates are worked out.