Mosquito season in Fulton County, GA: when it starts and ends
Mosquito months in Fulton County
In a normal year mosquito season in Fulton County, GA starts around March 9 and ends around November 20, about 37 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Fulton County, and when
- Start tipping out standing water weekly by February 23.
- Book any yard treatment for early March, ahead of the July peak.
- Repellent can go away after November 20.
- 49 West Nile cases since 2016: you should wear EPA-registered repellent at dusk June to September, and check GA spray notices.
Fulton County against the rest of GA
Fulton County has the 101st longest season of 159 GA counties, at 256 days against 347 in Glynn County and 199 in Union County. Its mean temperature is 62.1°F.
- Jones County: March 9 to November 21 (257 days, 1 WNV)
- Fayette County: March 9 to November 20 (256 days, 0 WNV)
- Wayne County: March 10 to November 21 (256 days, 0 WNV)
- Greene County: March 12 to November 23 (256 days, 0 WNV)
West Nile in Fulton County
From 1999 to 2025, CDC ArboNET counted 112 human West Nile cases in Fulton County (71 neuroinvasive) across 22 years. The worst was 2024 with 18; the latest was 2025.
More: how the dates are worked out · reading the West Nile counts.