Mosquito season in Madison County, NC: when it starts and ends
Mosquito months in Madison County
In a normal year mosquito season in Madison County, NC starts around April 14 and ends around October 26, about 28 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Madison County, and when
- Start tipping out standing water weekly by March 31.
- 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 Madison County are a nuisance; check window screens.
Madison County against the rest of NC
Madison County has the 95th longest season of 100 NC counties, at 195 days against 292 in Carteret County and 176 in Ashe County. Its mean temperature is 55°F.
- Clay County: April 9 to October 30 (204 days, 0 WNV)
- Alleghany County: April 10 to October 25 (198 days, 0 WNV)
- Haywood County: April 16 to October 22 (189 days, 1 WNV)
- Avery County: April 16 to October 20 (187 days, 0 WNV)
West Nile in Madison County
CDC ArboNET lists no human West Nile cases for Madison County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 1 of those years.
See how the dates are worked out, and when mosquitoes go away for the winter.