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

Mosquito months in Houston County

In a normal year mosquito season in Houston County, TN starts around March 28 and ends around November 11, about 33 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 Houston County, and when

• Start tipping out standing water weekly by March 14.
• Book any yard treatment for late March, ahead of the July peak.
• Repellent can go away after November 11.
• No West Nile cases since 2016, so bites in Houston County are a nuisance; check window screens.

Houston County against the rest of TN

Houston County has the 34th longest season of 95 TN counties, at 228 days against 252 in Hamilton County and 186 in Carter County. Its mean temperature is 58.5°F.

• Sumner County: March 26 to November 9 (228 days, 5 WNV)
• McMinn County: March 27 to November 10 (228 days, 1 WNV)
• Bradley County: March 26 to November 8 (227 days, 0 WNV)
• Meigs County: March 26 to November 8 (227 days, 1 WNV)

West Nile in Houston County

CDC ArboNET lists no human West Nile cases for Houston County from 1999 to 2025.

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