Mosquito season in Winn Parish, LA: when it starts and ends
Mosquito months in Winn Parish
In a normal year mosquito season in Winn Parish, LA starts around February 28 and ends around November 23, about 38 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Winn Parish, and when
- Start tipping out standing water weekly by February 14.
- Book any yard treatment for late February, ahead of the July peak.
- Repellent can go away after November 23.
- No West Nile cases since 2016, so bites in Winn Parish are a nuisance; check window screens.
Winn Parish against the rest of LA
Winn Parish has the 60th longest season of 64 LA counties, at 268 days against 358 in Orleans Parish and 247 in Claiborne Parish. Its mean temperature is 65.3°F.
- Tensas Parish: February 27 to November 22 (268 days, 0 WNV)
- Vernon Parish: February 28 to November 23 (268 days, 0 WNV)
- Bienville Parish: March 4 to November 23 (264 days, 2 WNV)
- Sabine Parish: March 6 to November 24 (263 days, 0 WNV)
West Nile in Winn Parish
From 1999 to 2025, CDC ArboNET counted 5 human West Nile cases in Winn Parish (3 neuroinvasive) across 3 years. The worst was 2012 with 3; the latest was 2012.
Background: when mosquitoes go away for the winter; how the dates are worked out.