Mosquito season in Tattnall County, GA: when it starts and ends

Mosquito months in Tattnall County

In a normal year mosquito season in Tattnall County, GA starts around February 23 and ends around January 4, about 45 weeks.

What to do in Tattnall County, and when

Start tipping out standing water weekly by February 9.
Book any yard treatment for late February, ahead of the July peak.
Repellent can go away after January 4.
No West Nile cases since 2016, so bites in Tattnall County are a nuisance; check window screens.

Tattnall County against the rest of GA

Tattnall County has the 19th longest season of 159 GA counties, at 315 days against 347 in Glynn County and 199 in Union County. Its mean temperature is 66.1°F.

Early County: February 17 to January 2 (319 days, 0 WNV)
Evans County: February 23 to January 4 (315 days, 0 WNV)
Bulloch County: February 22 to January 2 (314 days, 2 WNV)
Montgomery County: February 24 to January 4 (314 days, 0 WNV)

West Nile in Tattnall County

CDC ArboNET lists no human West Nile cases for Tattnall County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 2 of those years.

See how the dates are worked out, and when mosquitoes go away for the winter.