Mosquito season in Hill County, TX: when it starts and ends
Mosquito months in Hill County
In a normal year mosquito season in Hill County, TX starts around March 9 and ends around November 22, about 37 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Hill County, and when
- Start tipping out standing water weekly by February 23.
- Book any yard treatment for early March, ahead of the August peak.
- Repellent can go away after November 22.
- 2 West Nile cases since 2016 (last 2024): you should use repellent at dusk May to September, more so if over 60.
Hill County against the rest of TX
Hill County has the 155th longest season of 254 TX counties, at 258 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 66.1°F.
- Schleicher County: March 8 to November 21 (258 days, 0 WNV)
- Culberson County: March 9 to November 22 (258 days, 0 WNV)
- Archer County: March 9 to November 21 (257 days, 1 WNV)
- Camp County: March 8 to November 19 (256 days, 0 WNV)
West Nile in Hill County
From 1999 to 2025, CDC ArboNET counted 6 human West Nile cases in Hill County (4 neuroinvasive) across 5 years. The worst was 2012 with 2; the latest was 2024.
More: how the dates are worked out · when the season starts across the US.