Mosquito season in Uvalde County, TX: when it starts and ends
Mosquito months in Uvalde County
In a normal year mosquito season in Uvalde County, TX starts around March 1 and ends around November 27, about 39 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Uvalde County, and when
- Start tipping out standing water weekly by February 15.
- Book any yard treatment for early March, ahead of the August peak.
- Repellent can go away after November 27.
- 1 West Nile case since 2016 (last 2020): you should use repellent at dusk May to September, more so if over 60.
Uvalde County against the rest of TX
Uvalde County has the 106th longest season of 254 TX counties, at 271 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 68.3°F.
- Hamilton County: March 2 to November 30 (273 days, 1 WNV)
- Bandera County: March 2 to November 29 (272 days, 0 WNV)
- Bosque County: March 2 to November 28 (271 days, 2 WNV)
- Grayson County: March 2 to November 28 (271 days, 18 WNV)
West Nile in Uvalde County
From 1999 to 2025, CDC ArboNET counted 4 human West Nile cases in Uvalde County (4 neuroinvasive) across 3 years. The worst was 2014 with 2; the latest was 2020.
More: how the dates are worked out · when the season starts across the US.