Mosquito season in Lamb County, TX: when it starts and ends
Mosquito months in Lamb County
In a normal year mosquito season in Lamb County, TX starts around March 27 and ends around November 7, about 32 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Lamb County, and when
- Start tipping out standing water weekly by March 13.
- Book any yard treatment for late March, ahead of the July peak.
- Repellent can go away after November 7.
- 3 West Nile cases since 2016 (last 2025): you should use repellent at dusk June to August, more so if over 60.
Lamb County against the rest of TX
Lamb County has the 224th longest season of 254 TX counties, at 225 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 58.1°F.
- Floyd County: March 28 to November 11 (228 days, 3 WNV)
- Hockley County: March 28 to November 9 (226 days, 8 WNV)
- Menard County: March 27 to November 5 (223 days, 0 WNV)
- Cochran County: March 31 to November 7 (221 days, 0 WNV)
West Nile in Lamb County
From 1999 to 2025, CDC ArboNET counted 27 human West Nile cases in Lamb County (10 neuroinvasive) across 11 years. The worst was 2003 with 14; the latest was 2025.
Background: when mosquitoes go away for the winter; how the dates are worked out.