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

Mosquito months in Franklin County

In a normal year mosquito season in Franklin County, GA starts around March 7 and ends around November 22, about 37 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 Franklin County, and when

• Start tipping out standing water weekly by February 21.
• Book any yard treatment for early March, ahead of the July peak.
• Repellent can go away after November 22.
• No West Nile cases since 2016, so bites in Franklin County are a nuisance; check window screens.

Franklin County against the rest of GA

Franklin County has the 92nd longest season of 159 GA counties, at 260 days against 347 in Glynn County and 199 in Union County. Its mean temperature is 60.9°F.

• Clarke County: March 9 to November 25 (261 days, 1 WNV)
• Upson County: March 10 to November 26 (261 days, 0 WNV)
• Emanuel County: March 8 to November 22 (259 days, 0 WNV)
• Johnson County: March 8 to November 22 (259 days, 1 WNV)

West Nile in Franklin County

CDC ArboNET lists no human West Nile cases for Franklin County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 4 of those years.

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