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

Mosquito months in Kendall County

In a normal year mosquito season in Kendall County, TX starts around March 2 and ends around November 27, about 39 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 Kendall County, and when

• Start tipping out standing water weekly by February 16.
• 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 2021): you should use repellent at dusk May to September, more so if over 60.

Kendall County against the rest of TX

Kendall County has the 112th longest season of 254 TX counties, at 270 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 66.2°F.

• Ellis County: March 3 to November 29 (271 days, 10 WNV)
• Collin County: March 4 to November 30 (271 days, 62 WNV)
• Crane County: March 1 to November 25 (269 days, 0 WNV)
• Upton County: March 1 to November 25 (269 days, 0 WNV)

West Nile in Kendall County

From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Kendall County (1 neuroinvasive) across 1 year. The worst was 2021 with 1; the latest was 2021.

See how the dates are worked out, and when the season starts across the US.