Mosquito season in Tangipahoa Parish, LA: when it starts and ends
Mosquito months in Tangipahoa Parish
In a normal year mosquito season in Tangipahoa Parish, LA starts around February 21 and ends around December 2, about 41 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Tangipahoa Parish, and when
- Start tipping out standing water weekly by February 7.
- Book any yard treatment for late February, ahead of the August peak.
- Repellent can go away after December 2.
- 21 West Nile cases since 2016: you should wear EPA-registered repellent at dusk May to September, and check LA spray notices.
Tangipahoa Parish against the rest of LA
Tangipahoa Parish has the 46th longest season of 64 LA counties, at 284 days against 358 in Orleans Parish and 247 in Claiborne Parish. Its mean temperature is 66.8°F.
- Concordia Parish: February 22 to December 5 (286 days, 1 WNV)
- Livingston Parish: February 21 to December 2 (284 days, 42 WNV)
- De Soto Parish: February 22 to December 1 (282 days, 10 WNV)
- Jackson Parish: February 24 to December 1 (280 days, 1 WNV)
West Nile in Tangipahoa Parish
From 1999 to 2025, CDC ArboNET counted 97 human West Nile cases in Tangipahoa Parish (64 neuroinvasive) across 18 years. The worst was 2002 with 24; the latest was 2025.
Background: reading the West Nile counts; how the dates are worked out.