Mosquito season in St. Lucie County, FL: when it starts and ends
Mosquito months in St. Lucie County
Mosquitoes in St. Lucie County, FL can be active in any month. The worst stretch is April to November.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in St. Lucie County, and when
- No off-season here: tip out standing water every week, all year.
- A yard treatment matters most April to November.
- No West Nile cases since 2016, so bites in St. Lucie County are a nuisance; check window screens.
St. Lucie County against the rest of FL
St. Lucie County has the 14th longest season of 67 FL counties, at 365 days against 365 in Broward County and 281 in Gilchrist County. Its mean temperature is 73.6°F.
- Pinellas County: all year (365 days, 1 WNV)
- Polk County: all year (365 days, 0 WNV)
- Seminole County: January 14 to January 11 (362 days, 1 WNV)
- Flagler County: January 19 to January 16 (362 days, 0 WNV)
West Nile in St. Lucie County
CDC ArboNET lists no human West Nile cases for St. Lucie County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 16 of those years.
Background: where mosquitoes never stop; how the dates are worked out.