Mosquito season in Polk County, GA: when it starts and ends
Mosquito months in Polk County
In a normal year mosquito season in Polk County, GA starts around March 16 and ends around November 15, about 35 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Polk County, and when
- Start tipping out standing water weekly by March 2.
- Book any yard treatment for mid March, ahead of the July peak.
- Repellent can go away after November 15.
- 1 West Nile case since 2016 (last 2017): you should use repellent at dusk June to September, more so if over 60.
Polk County against the rest of GA
Polk County has the 125th longest season of 159 GA counties, at 244 days against 347 in Glynn County and 199 in Union County. Its mean temperature is 61.9°F.
- Butts County: March 16 to November 17 (246 days, 0 WNV)
- Henry County: March 16 to November 17 (246 days, 1 WNV)
- Oglethorpe County: March 18 to November 17 (244 days, 0 WNV)
- Dawson County: March 17 to November 15 (243 days, 1 WNV)
West Nile in Polk County
From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Polk County (2 neuroinvasive) across 2 years. The worst was 2003 with 2; the latest was 2017.
Background: when mosquitoes go away for the winter; how the dates are worked out.