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

Mosquito months in Humphreys County

In a normal year mosquito season in Humphreys County, TN starts around March 18 and ends around November 13, about 34 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 Humphreys County, and when

• Start tipping out standing water weekly by March 4.
• Book any yard treatment for mid March, ahead of the July peak.
• Repellent can go away after November 13.
• No West Nile cases since 2016, so bites in Humphreys County are a nuisance; check window screens.

Humphreys County against the rest of TN

Humphreys County has the 10th longest season of 95 TN counties, at 240 days against 252 in Hamilton County and 186 in Carter County. Its mean temperature is 59°F.

• Fayette County: March 16 to November 13 (242 days, 1 WNV)
• Dyer County: March 16 to November 12 (241 days, 1 WNV)
• Benton County: March 20 to November 14 (239 days, 0 WNV)
• Hardin County: March 18 to November 11 (238 days, 0 WNV)

West Nile in Humphreys County

CDC ArboNET lists no human West Nile cases for Humphreys County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 3 of those years.

More: how the dates are worked out · when the season starts across the US.