Mosquito season in Henderson County, NC: when it starts and ends
Mosquito months in Henderson County
In a normal year mosquito season in Henderson County, NC starts around April 2 and ends around November 3, about 31 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Henderson County, and when
- Start tipping out standing water weekly by March 19.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after November 3.
- No West Nile cases since 2016, so bites in Henderson County are a nuisance; check window screens.
Henderson County against the rest of NC
Henderson County has the 81st longest season of 100 NC counties, at 215 days against 292 in Carteret County and 176 in Ashe County. Its mean temperature is 56°F.
- Vance County: April 1 to November 4 (217 days, 0 WNV)
- Cleveland County: March 31 to November 2 (216 days, 1 WNV)
- Person County: April 2 to November 3 (215 days, 0 WNV)
- Transylvania County: April 2 to November 2 (214 days, 0 WNV)
West Nile in Henderson County
CDC ArboNET lists no human West Nile cases for Henderson County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 3 of those years.
Background: when the season starts across the US; how the dates are worked out.