Mosquito season in Wilson County, TX: when it starts and ends
Mosquito months in Wilson County
In a normal year mosquito season in Wilson County, TX starts around February 21 and ends around December 3, about 41 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Wilson County, and when
- Start tipping out standing water weekly by February 7.
- Book any yard treatment for late February, ahead of the August peak.
- Repellent can go away after December 3.
- 1 West Nile case since 2016 (last 2016): you should use repellent at dusk May to October, more so if over 60.
Wilson County against the rest of TX
Wilson County has the 75th longest season of 254 TX counties, at 285 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 69.6°F.
- Grimes County: February 19 to December 3 (287 days, 6 WNV)
- Cherokee County: February 23 to December 7 (287 days, 3 WNV)
- Wood County: February 22 to December 4 (285 days, 5 WNV)
- Williamson County: February 23 to December 5 (285 days, 13 WNV)
West Nile in Wilson County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Wilson County (1 neuroinvasive) across 2 years. The worst was 2016 with 1; the latest was 2016.
See how the dates are worked out, and when mosquitoes go away for the winter.