Mosquito season in Madison Parish, LA: when it starts and ends
Mosquito months in Madison Parish
In a normal year mosquito season in Madison Parish, LA starts around February 13 and ends around December 10, about 43 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Madison Parish, and when
- Start tipping out standing water weekly by January 30.
- Book any yard treatment for mid February, ahead of the July peak.
- Repellent can go away after December 10.
- 1 West Nile case since 2016 (last 2020): you should use repellent at dusk May to September, more so if over 60.
Madison Parish against the rest of LA
Madison Parish has the 37th longest season of 64 LA counties, at 300 days against 358 in Orleans Parish and 247 in Claiborne Parish. Its mean temperature is 67.4°F.
- West Baton Rouge Parish: February 8 to December 9 (304 days, 6 WNV)
- Caddo Parish: February 11 to December 10 (302 days, 47 WNV)
- St. Tammany Parish: February 14 to December 6 (295 days, 38 WNV)
- Rapides Parish: February 16 to December 7 (294 days, 29 WNV)
West Nile in Madison Parish
From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Madison Parish (3 neuroinvasive) across 3 years. The worst was 2020 with 1; the latest was 2020.
More: how the dates are worked out · when the season starts across the US.