Mosquito season in Union County, NC: when it starts and ends
Mosquito months in Union County
In a normal year mosquito season in Union County, NC starts around March 23 and ends around November 10, about 33 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Union County, and when
- Start tipping out standing water weekly by March 9.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 10.
- 1 West Nile case since 2016 (last 2021): you should use repellent at dusk June to September, more so if over 60.
Union County against the rest of NC
Union County has the 57th longest season of 100 NC counties, at 232 days against 292 in Carteret County and 176 in Ashe County. Its mean temperature is 60.9°F.
- Jones County: March 24 to November 16 (237 days, 0 WNV)
- Hoke County: March 22 to November 13 (236 days, 0 WNV)
- Gates County: March 25 to November 12 (232 days, 0 WNV)
- Halifax County: March 26 to November 13 (232 days, 0 WNV)
West Nile in Union County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Union County (1 neuroinvasive) across 1 year. The worst was 2021 with 1; the latest was 2021.
More: how the dates are worked out · when mosquitoes go away for the winter.