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

Mosquito months in Chattahoochee County

In a normal year mosquito season in Chattahoochee County, GA starts around March 11 and ends around November 20, about 36 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 Chattahoochee County, and when

• Start tipping out standing water weekly by February 25.
• Book any yard treatment for mid March, ahead of the July peak.
• Repellent can go away after November 20.
• No West Nile cases since 2016, so bites in Chattahoochee County are a nuisance; check window screens.

Chattahoochee County against the rest of GA

Chattahoochee County has the 107th longest season of 159 GA counties, at 254 days against 347 in Glynn County and 199 in Union County. Its mean temperature is 64.9°F.

• DeKalb County: March 12 to November 22 (255 days, 28 WNV)
• Gwinnett County: March 12 to November 22 (255 days, 7 WNV)
• Glascock County: March 13 to November 22 (254 days, 0 WNV)
• Warren County: March 13 to November 22 (254 days, 0 WNV)

West Nile in Chattahoochee County

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

More: how the dates are worked out · when mosquitoes go away for the winter.