Mosquito season in Sterling County, TX: when it starts and ends
Mosquito months in Sterling County
In a normal year mosquito season in Sterling County, TX starts around March 14 and ends around November 15, about 35 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Sterling County, and when
- Start tipping out standing water weekly by February 28.
- Book any yard treatment for mid March, ahead of the July peak.
- Repellent can go away after November 15.
- 1 West Nile case since 2016 (last 2017): you should use repellent at dusk May to September, more so if over 60.
Sterling County against the rest of TX
Sterling County has the 191st longest season of 254 TX counties, at 246 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 63.6°F.
- Garza County: March 17 to November 19 (247 days, 1 WNV)
- Eastland County: March 12 to November 13 (246 days, 1 WNV)
- Stonewall County: March 14 to November 15 (246 days, 1 WNV)
- Throckmorton County: March 14 to November 15 (246 days, 0 WNV)
West Nile in Sterling County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Sterling County (2 neuroinvasive) across 2 years. The worst was 2017 with 1; the latest was 2017.
See how the dates are worked out, and when mosquitoes go away for the winter.