Mosquito season in Marion County, GA: when it starts and ends
Mosquito months in Marion County
In a normal year mosquito season in Marion County, GA starts around March 17 and ends around November 15, about 35 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Marion County, and when
- Start tipping out standing water weekly by March 3.
- Book any yard treatment for mid March, ahead of the July peak.
- Repellent can go away after November 15.
- No West Nile cases since 2016, so bites in Marion County are a nuisance; check window screens.
Marion County against the rest of GA
Marion County has the 128th longest season of 159 GA counties, at 243 days against 347 in Glynn County and 199 in Union County. Its mean temperature is 63.2°F.
- Oglethorpe County: March 18 to November 17 (244 days, 0 WNV)
- Dawson County: March 17 to November 15 (243 days, 1 WNV)
- Talbot County: March 17 to November 15 (243 days, 0 WNV)
- Taylor County: March 17 to November 15 (243 days, 0 WNV)
West Nile in Marion County
CDC ArboNET lists no human West Nile cases for Marion 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.