Mosquito season in Gibson County, TN: when it starts and ends

Mosquito months in Gibson County

In a normal year mosquito season in Gibson County, TN starts around March 25 and ends around November 6, about 32 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 Gibson County, and when

• Start tipping out standing water weekly by March 11.
• Book any yard treatment for late March, ahead of the July peak.
• Repellent can go away after November 6.
• 1 West Nile case since 2016 (last 2019): you should use repellent at dusk June to September, more so if over 60.

Gibson County against the rest of TN

Gibson County has the 39th longest season of 95 TN counties, at 226 days against 252 in Hamilton County and 186 in Carter County. Its mean temperature is 59.6°F.

• Polk County: March 26 to November 8 (227 days, 0 WNV)
• Wilson County: March 26 to November 8 (227 days, 1 WNV)
• Lawrence County: March 26 to November 7 (226 days, 1 WNV)
• Franklin County: March 26 to November 6 (225 days, 0 WNV)

West Nile in Gibson County

From 1999 to 2025, CDC ArboNET counted 5 human West Nile cases in Gibson County (5 neuroinvasive) across 5 years. The worst was 2019 with 1; the latest was 2019.

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