Mosquito season in Cooke County, TX: when it starts and ends
Mosquito months in Cooke County
In a normal year mosquito season in Cooke County, TX starts around March 5 and ends around November 24, about 38 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Cooke County, and when
- Start tipping out standing water weekly by February 19.
- Book any yard treatment for early March, ahead of the July peak.
- Repellent can go away after November 24.
- 8 West Nile cases since 2016 (last 2025): you should use repellent at dusk May to September, more so if over 60.
Cooke County against the rest of TX
Cooke County has the 135th longest season of 254 TX counties, at 264 days against 365 in Cameron County and 191 in Lipscomb County. Its mean temperature is 62.8°F.
- Rains County: March 6 to November 26 (265 days, 1 WNV)
- Marion County: March 3 to November 22 (264 days, 0 WNV)
- Harrison County: March 5 to November 24 (264 days, 3 WNV)
- Henderson County: March 5 to November 24 (264 days, 9 WNV)
West Nile in Cooke County
From 1999 to 2025, CDC ArboNET counted 24 human West Nile cases in Cooke County (14 neuroinvasive) across 8 years. The worst was 2012 with 6; the latest was 2025.
Background: reading the West Nile counts; how the dates are worked out.