Mosquito season in Winkler County, TX: when it starts and ends

Mosquito months in Winkler County

In a normal year mosquito season in Winkler County, TX starts around March 9 and ends around November 20, about 37 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 Winkler County, and when

• Start tipping out standing water weekly by February 23.
• Book any yard treatment for early March, ahead of the July peak.
• Repellent can go away after November 20.
• No West Nile cases since 2016, so bites in Winkler County are a nuisance; check window screens.

Winkler County against the rest of TX

Winkler County has the 161st longest season of 254 TX counties, at 256 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 64.1°F.

• Anderson County: March 9 to November 20 (256 days, 1 WNV)
• Palo Pinto County: March 9 to November 20 (256 days, 4 WNV)
• Falls County: March 8 to November 18 (255 days, 1 WNV)
• Kimble County: March 9 to November 19 (255 days, 0 WNV)

West Nile in Winkler County

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

Background: when mosquitoes go away for the winter; how the dates are worked out.