Mosquito season in Columbus County, NC: when it starts and ends
Mosquito months in Columbus County
In a normal year mosquito season in Columbus County, NC starts around March 14 and ends around November 17, about 35 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Columbus County, and when
- Start tipping out standing water weekly by February 28.
- Book any yard treatment for mid March, ahead of the July peak.
- Repellent can go away after November 17.
- 3 West Nile cases since 2016 (last 2024): you should use repellent at dusk June to September, more so if over 60.
Columbus County against the rest of NC
Columbus County has the 31st longest season of 100 NC counties, at 248 days against 292 in Carteret County and 176 in Ashe County. Its mean temperature is 62°F.
- Pender County: March 16 to November 20 (249 days, 0 WNV)
- Washington County: March 17 to November 21 (249 days, 0 WNV)
- Harnett County: March 14 to November 17 (248 days, 0 WNV)
- Pamlico County: March 17 to November 20 (248 days, 0 WNV)
West Nile in Columbus County
From 1999 to 2025, CDC ArboNET counted 4 human West Nile cases in Columbus County (4 neuroinvasive) across 2 years. The worst was 2024 with 3; the latest was 2024.
Background: when the season starts across the US; how the dates are worked out.