Mosquito season in West Feliciana Parish, LA: when it starts and ends

Mosquito months in West Feliciana Parish

In a normal year mosquito season in West Feliciana Parish, LA starts around February 7 and ends around December 10, about 44 weeks.

1. Jan
2. Feb
3. Mar
4. Apr
5. May
6. Jun
7. Jul
8. Aug
9. Sep
10. Oct
11. Nov
12. Dec

What to do in West Feliciana Parish, and when

• Start tipping out standing water weekly by January 24.
• Book any yard treatment for early February, ahead of the August peak.
• Repellent can go away after December 10.
• 1 West Nile case since 2016 (last 2016): you should use repellent at dusk May to September, more so if over 60.

West Feliciana Parish against the rest of LA

West Feliciana Parish has the 30th longest season of 64 LA counties, at 306 days against 358 in Orleans Parish and 247 in Claiborne Parish. Its mean temperature is 66.8°F.

• Lafayette Parish: February 5 to December 14 (312 days, 14 WNV)
• East Baton Rouge Parish: February 6 to December 11 (308 days, 65 WNV)
• Grant Parish: February 11 to December 14 (306 days, 2 WNV)
• St. Landry Parish: February 6 to December 8 (305 days, 3 WNV)

West Nile in West Feliciana Parish

From 1999 to 2025, CDC ArboNET counted 4 human West Nile cases in West Feliciana Parish (3 neuroinvasive) across 3 years. The worst was 2012 with 2; the latest was 2016.

See how the dates are worked out, and when mosquitoes go away for the winter.