Mosquito season in Runnels County, TX: when it starts and ends
Mosquito months in Runnels County
In a normal year mosquito season in Runnels County, TX starts around March 8 and ends around November 22, about 37 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Runnels County, and when
- Start tipping out standing water weekly by February 22.
- Book any yard treatment for early March, ahead of the July peak.
- Repellent can go away after November 22.
- 3 West Nile cases since 2016 (last 2019): you should use repellent at dusk May to September, more so if over 60.
Runnels County against the rest of TX
Runnels County has the 151st longest season of 254 TX counties, at 259 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 64.7°F.
- Brown County: March 7 to November 21 (259 days, 2 WNV)
- Ector County: March 7 to November 21 (259 days, 7 WNV)
- Mills County: March 8 to November 21 (258 days, 0 WNV)
- Schleicher County: March 8 to November 21 (258 days, 0 WNV)
West Nile in Runnels County
From 1999 to 2025, CDC ArboNET counted 7 human West Nile cases in Runnels County (4 neuroinvasive) across 6 years. The worst was 2015 with 2; the latest was 2019.
Background: when the season starts across the US; how the dates are worked out.