Mosquito season in Sumter County, FL: when it starts and ends
Mosquito months in Sumter County
In a normal year mosquito season in Sumter County, FL starts around February 11 and ends around December 29, about 46 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Sumter County, and when
- Start tipping out standing water weekly by January 28.
- Book any yard treatment for mid February, ahead of the August peak.
- Repellent can go away after December 29.
- 2 West Nile cases since 2016 (last 2019): you should use repellent at dusk May to October, more so if over 60.
Sumter County against the rest of FL
Sumter County has the 47th longest season of 67 FL counties, at 321 days against 365 in Broward County and 281 in Gilchrist County. Its mean temperature is 69.7°F.
- Levy County: February 6 to December 27 (324 days, 1 WNV)
- Citrus County: February 11 to December 29 (321 days, 0 WNV)
- Holmes County: February 24 to January 11 (321 days, 0 WNV)
- Jackson County: February 9 to December 22 (316 days, 0 WNV)
West Nile in Sumter County
From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Sumter County (3 neuroinvasive) across 3 years. The worst was 2019 with 1; the latest was 2019.
Background: when mosquitoes go away for the winter; how the dates are worked out.