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

Mosquito months in Raleigh County

In a normal year mosquito season in Raleigh County, WV starts around April 25 and ends around October 20, about 25 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 Raleigh County, and when

• Start tipping out standing water weekly by April 11.
• Book any yard treatment for late April, ahead of the July peak.
• Repellent can go away after October 20.
• No West Nile cases since 2016, so bites in Raleigh County are a nuisance; check window screens.

Raleigh County against the rest of WV

Raleigh County has the 51st longest season of 55 WV counties, at 178 days against 224 in Cabell County and 162 in Randolph County. Its mean temperature is 50.4°F.

• Hardy County: April 23 to October 23 (183 days, 2 WNV)
• Barbour County: April 24 to October 22 (181 days, 0 WNV)
• Nicholas County: April 25 to October 18 (176 days, 0 WNV)
• Pocahontas County: April 30 to October 14 (167 days, 0 WNV)

West Nile in Raleigh County

CDC ArboNET lists no human West Nile cases for Raleigh County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 4 of those years.

See how the dates are worked out, and when the season starts across the US.