Mosquito season in Roberts County, TX: when it starts and ends
Mosquito months in Roberts County
In a normal year mosquito season in Roberts County, TX starts around April 5 and ends around November 3, about 30 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Roberts County, and when
- Start tipping out standing water weekly by March 22.
- Book any yard treatment for early April, ahead of the July peak.
- Repellent can go away after November 3.
- 1 West Nile case since 2016 (last 2018): you should use repellent at dusk June to September, more so if over 60.
Roberts County against the rest of TX
Roberts County has the 242nd longest season of 254 TX counties, at 212 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 57.7°F.
- Deaf Smith County: April 5 to November 4 (213 days, 5 WNV)
- Hemphill County: April 5 to November 3 (212 days, 2 WNV)
- Oldham County: April 7 to November 3 (210 days, 0 WNV)
- Swisher County: April 7 to November 3 (210 days, 2 WNV)
West Nile in Roberts County
From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Roberts County (2 neuroinvasive) across 2 years. The worst was 2018 with 1; the latest was 2018.
Background: when the season starts across the US; how the dates are worked out.