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

Mosquito months in Hertford County

In a normal year mosquito season in Hertford County, NC starts around March 26 and ends around November 10, about 33 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 Hertford County, and when

• Start tipping out standing water weekly by March 12.
• 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 2017): you should use repellent at dusk June to September, more so if over 60.

Hertford County against the rest of NC

Hertford County has the 65th longest season of 100 NC counties, at 229 days against 292 in Carteret County and 176 in Ashe County. Its mean temperature is 59°F.

• Polk County: March 25 to November 10 (230 days, 0 WNV)
• Caldwell County: March 25 to November 9 (229 days, 0 WNV)
• Rowan County: March 25 to November 8 (228 days, 1 WNV)
• Buncombe County: March 26 to November 8 (227 days, 4 WNV)

West Nile in Hertford County

From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Hertford County (1 neuroinvasive) across 1 year. The worst was 2017 with 1; the latest was 2017.

See how the dates are worked out, and when the season starts across the US.