Mosquito season in Jack County, TX: when it starts and ends
Mosquito months in Jack County
In a normal year mosquito season in Jack County, TX starts around March 14 and ends around November 16, about 35 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Jack 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 16.
- No West Nile cases since 2016, so bites in Jack County are a nuisance; check window screens.
Jack County against the rest of TX
Jack County has the 184th longest season of 254 TX counties, at 247 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 63.5°F.
- Sutton County: March 13 to November 16 (248 days, 0 WNV)
- Callahan County: March 14 to November 16 (247 days, 2 WNV)
- Erath County: March 15 to November 17 (247 days, 2 WNV)
- Hall County: March 15 to November 17 (247 days, 1 WNV)
West Nile in Jack County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Jack County (1 neuroinvasive) across 2 years. The worst was 2012 with 1; the latest was 2012.
Background: when the season starts across the US; how the dates are worked out.