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

Mosquito months in Potter County

In a normal year mosquito season in Potter County, TX starts around April 2 and ends around November 5, about 31 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 Potter County, and when

• Start tipping out standing water weekly by March 19.
• Book any yard treatment for early April, ahead of the July peak.
• Repellent can go away after November 5.
• 16 West Nile cases since 2016: you should wear EPA-registered repellent at dusk June to September, and check TX spray notices.

Potter County against the rest of TX

Potter County has the 233rd longest season of 254 TX counties, at 217 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 57.9°F.

• Ochiltree County: April 1 to November 7 (220 days, 5 WNV)
• Presidio County: April 2 to November 7 (219 days, 1 WNV)
• Briscoe County: April 3 to November 6 (217 days, 2 WNV)
• Carson County: April 3 to November 6 (217 days, 2 WNV)

West Nile in Potter County

From 1999 to 2025, CDC ArboNET counted 59 human West Nile cases in Potter County (31 neuroinvasive) across 16 years. The worst was 2003 with 14; the latest was 2025.

See how the dates are worked out, and reading the West Nile counts.