Mosquito season in Decatur County, GA: when it starts and ends
Mosquito months in Decatur County
In a normal year mosquito season in Decatur County, GA starts around February 28 and ends around December 2, about 40 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Decatur County, and when
- Start tipping out standing water weekly by February 14.
- Book any yard treatment for late February, ahead of the July peak.
- Repellent can go away after December 2.
- 2 West Nile cases since 2016 (last 2023): you should use repellent at dusk May to September, more so if over 60.
Decatur County against the rest of GA
Decatur County has the 55th longest season of 159 GA counties, at 277 days against 347 in Glynn County and 199 in Union County. Its mean temperature is 67.1°F.
- McDuffie County: February 26 to December 4 (281 days, 1 WNV)
- Terrell County: February 26 to December 4 (281 days, 0 WNV)
- Crisp County: February 26 to November 29 (276 days, 2 WNV)
- Dooly County: February 26 to November 29 (276 days, 0 WNV)
West Nile in Decatur County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Decatur County (2 neuroinvasive) across 2 years. The worst was 2023 with 1; the latest was 2023.
Background: when mosquitoes go away for the winter; how the dates are worked out.