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

Mosquito months in Jim Wells County

In a normal year mosquito season in Jim Wells County, TX starts around January 15 and ends around January 6, about 51 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 Jim Wells County, and when

• Start tipping out standing water weekly by January 1.
• Book any yard treatment for mid January, ahead of the August peak.
• Repellent can go away after January 6.
• 1 West Nile case since 2016 (last 2017): you should use repellent at dusk April to October, more so if over 60.

Jim Wells County against the rest of TX

Jim Wells County has the 7th longest season of 254 TX counties, at 356 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 73.9°F.

• Zapata County: January 5 to January 1 (361 days, 0 WNV)
• Aransas County: January 8 to January 4 (361 days, 0 WNV)
• Nueces County: January 11 to January 1 (355 days, 14 WNV)
• San Patricio County: January 12 to January 1 (354 days, 2 WNV)

West Nile in Jim Wells County

From 1999 to 2025, CDC ArboNET counted 5 human West Nile cases in Jim Wells County (2 neuroinvasive) across 3 years. The worst was 2007 with 3; the latest was 2017.

See how the dates are worked out, and where mosquitoes never stop.