Mosquito season in Upton County, TX: when it starts and ends
Mosquito months in Upton County
In a normal year mosquito season in Upton County, TX starts around March 1 and ends around November 25, about 38 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Upton County, and when
- Start tipping out standing water weekly by February 15.
- Book any yard treatment for early March, ahead of the July peak.
- Repellent can go away after November 25.
- No West Nile cases since 2016, so bites in Upton County are a nuisance; check window screens.
Upton County against the rest of TX
Upton County has the 114th longest season of 254 TX counties, at 269 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 66.4°F.
- Kendall County: March 2 to November 27 (270 days, 1 WNV)
- Crane County: March 1 to November 25 (269 days, 0 WNV)
- Fisher County: March 4 to November 28 (269 days, 0 WNV)
- Hunt County: March 4 to November 28 (269 days, 13 WNV)
West Nile in Upton County
CDC ArboNET lists no human West Nile cases for Upton County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 4 of those years.
See how the dates are worked out, and when mosquitoes go away for the winter.