Mosquito season in Catahoula Parish, LA: when it starts and ends
Mosquito months in Catahoula Parish
In a normal year mosquito season in Catahoula Parish, LA starts around February 22 and ends around December 5, about 41 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Catahoula Parish, and when
- Start tipping out standing water weekly by February 8.
- Book any yard treatment for late February, ahead of the July peak.
- Repellent can go away after December 5.
- 1 West Nile case since 2016 (last 2017): you should use repellent at dusk May to September, more so if over 60.
Catahoula Parish against the rest of LA
Catahoula Parish has the 43rd longest season of 64 LA counties, at 286 days against 358 in Orleans Parish and 247 in Claiborne Parish. Its mean temperature is 65.2°F.
- West Carroll Parish: February 21 to December 6 (288 days, 1 WNV)
- Caldwell Parish: February 20 to December 4 (287 days, 0 WNV)
- Concordia Parish: February 22 to December 5 (286 days, 1 WNV)
- Livingston Parish: February 21 to December 2 (284 days, 42 WNV)
West Nile in Catahoula Parish
From 1999 to 2025, CDC ArboNET counted 4 human West Nile cases in Catahoula Parish (2 neuroinvasive) across 4 years. The worst was 2017 with 1; the latest was 2017.
More: how the dates are worked out · when mosquitoes go away for the winter.