Mosquito season in Pecos County, TX: when it starts and ends
Mosquito months in Pecos County
In a normal year mosquito season in Pecos County, TX starts around February 23 and ends around December 1, about 40 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Pecos County, and when
- Start tipping out standing water weekly by February 9.
- Book any yard treatment for late February, ahead of the July peak.
- Repellent can go away after December 1.
- 1 West Nile case since 2016 (last 2016): you should use repellent at dusk May to September, more so if over 60.
Pecos County against the rest of TX
Pecos County has the 81st longest season of 254 TX counties, at 281 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 66.4°F.
- Brewster County: February 21 to December 2 (284 days, 0 WNV)
- Smith County: February 23 to December 4 (284 days, 19 WNV)
- Panola County: February 24 to December 2 (281 days, 1 WNV)
- Colorado County: February 25 to December 3 (281 days, 2 WNV)
West Nile in Pecos County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Pecos County (2 neuroinvasive) across 2 years. The worst was 2016 with 1; the latest was 2016.
More: how the dates are worked out · when mosquitoes go away for the winter.