Mosquito season in Clayton County, GA: when it starts and ends
Mosquito months in Clayton County
In a normal year mosquito season in Clayton County, GA starts around March 8 and ends around November 26, about 38 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Clayton County, and when
- Start tipping out standing water weekly by February 22.
- Book any yard treatment for early March, ahead of the July peak.
- Repellent can go away after November 26.
- 1 West Nile case since 2016 (last 2023): you should use repellent at dusk May to September, more so if over 60.
Clayton County against the rest of GA
Clayton County has the 87th longest season of 159 GA counties, at 263 days against 347 in Glynn County and 199 in Union County. Its mean temperature is 62.2°F.
- Rockdale County: March 6 to November 24 (263 days, 1 WNV)
- Burke County: March 7 to November 25 (263 days, 1 WNV)
- Randolph County: March 9 to November 27 (263 days, 0 WNV)
- Hart County: March 7 to November 23 (261 days, 0 WNV)
West Nile in Clayton County
From 1999 to 2025, CDC ArboNET counted 9 human West Nile cases in Clayton County (6 neuroinvasive) across 6 years. The worst was 2004 with 3; the latest was 2023.
More: how the dates are worked out · when mosquitoes go away for the winter.