Mosquito season in Kerr County, TX: when it starts and ends
Mosquito months in Kerr County
In a normal year mosquito season in Kerr County, TX starts around March 19 and ends around November 12, about 34 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Kerr County, and when
- Start tipping out standing water weekly by March 5.
- Book any yard treatment for mid March, ahead of the August peak.
- Repellent can go away after November 12.
- No West Nile cases since 2016, so bites in Kerr County are a nuisance; check window screens.
Kerr County against the rest of TX
Kerr County has the 211th longest season of 254 TX counties, at 238 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 64.2°F.
- Collingsworth County: March 19 to November 12 (238 days, 0 WNV)
- Irion County: March 19 to November 12 (238 days, 2 WNV)
- King County: March 19 to November 12 (238 days, 0 WNV)
- Concho County: March 20 to November 13 (238 days, 0 WNV)
West Nile in Kerr County
From 1999 to 2025, CDC ArboNET counted 1 human West Nile case in Kerr County (0 neuroinvasive) across 1 year. The worst was 2012 with 1; the latest was 2012.
More: how the dates are worked out · when mosquitoes go away for the winter.