Mosquito season in Dade County, GA: when it starts and ends

Mosquito months in Dade County

In a normal year mosquito season in Dade County, GA starts around March 11 and ends around November 15, about 36 weeks.

1. Jan
2. Feb
3. Mar
4. Apr
5. May
6. Jun
7. Jul
8. Aug
9. Sep
10. Oct
11. Nov
12. Dec

What to do in Dade County, and when

• Start tipping out standing water weekly by February 25.
• 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 Dade County are a nuisance; check window screens.

Dade County against the rest of GA

Dade County has the 116th longest season of 159 GA counties, at 249 days against 347 in Glynn County and 199 in Union County. Its mean temperature is 60.2°F.

• Cobb County: March 14 to November 19 (250 days, 11 WNV)
• Douglas County: March 14 to November 19 (250 days, 2 WNV)
• Madison County: March 15 to November 19 (249 days, 0 WNV)
• Lincoln County: March 16 to November 20 (249 days, 0 WNV)

West Nile in Dade County

CDC ArboNET lists no human West Nile cases for Dade County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 2 of those years.

See how the dates are worked out, and when mosquitoes go away for the winter.