Mosquito season in Forsyth County, GA: when it starts and ends
Mosquito months in Forsyth County
In a normal year mosquito season in Forsyth County, GA starts around March 20 and ends around November 15, about 34 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Forsyth County, and when
- Start tipping out standing water weekly by March 6.
- Book any yard treatment for mid March, ahead of the July peak.
- Repellent can go away after November 15.
- 2 West Nile cases since 2016 (last 2024): you should use repellent at dusk June to September, more so if over 60.
Forsyth County against the rest of GA
Forsyth County has the 143rd longest season of 159 GA counties, at 240 days against 347 in Glynn County and 199 in Union County. Its mean temperature is 60.1°F.
- Whitfield County: March 19 to November 15 (241 days, 4 WNV)
- Gilmer County: March 17 to November 12 (240 days, 0 WNV)
- Murray County: March 19 to November 13 (239 days, 0 WNV)
- Cherokee County: March 20 to November 14 (239 days, 5 WNV)
West Nile in Forsyth County
From 1999 to 2025, CDC ArboNET counted 4 human West Nile cases in Forsyth County (3 neuroinvasive) across 4 years. The worst was 2024 with 1; the latest was 2024.
More: how the dates are worked out · when the season starts across the US.