Mosquito season in Alleghany County, NC: when it starts and ends

Mosquito months in Alleghany County

In a normal year mosquito season in Alleghany County, NC starts around April 10 and ends around October 25, about 28 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 Alleghany County, and when

• Start tipping out standing water weekly by March 27.
• Book any yard treatment for early April, ahead of the July peak.
• Repellent can go away after October 25.
• No West Nile cases since 2016, so bites in Alleghany County are a nuisance; check window screens.

Alleghany County against the rest of NC

Alleghany County has the 94th longest season of 100 NC counties, at 198 days against 292 in Carteret County and 176 in Ashe County. Its mean temperature is 52.5°F.

• Cherokee County: April 9 to October 30 (204 days, 0 WNV)
• Clay County: April 9 to October 30 (204 days, 0 WNV)
• Madison County: April 14 to October 26 (195 days, 0 WNV)
• Haywood County: April 16 to October 22 (189 days, 1 WNV)

West Nile in Alleghany County

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

Background: when mosquitoes go away for the winter; how the dates are worked out.