Mosquito season in Pasco County, FL: when it starts and ends
Mosquito months in Pasco County
In a normal year mosquito season in Pasco County, FL starts around February 7 and ends around December 29, about 46 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Pasco County, 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 29.
- 1 West Nile case since 2016 (last 2024): you should use repellent at dusk April to October, more so if over 60.
Pasco County against the rest of FL
Pasco County has the 44th longest season of 67 FL counties, at 325 days against 365 in Broward County and 281 in Gilchrist County. Its mean temperature is 71.5°F.
- Franklin County: February 5 to January 1 (330 days, 0 WNV)
- Jefferson County: February 4 to December 27 (326 days, 0 WNV)
- Levy County: February 6 to December 27 (324 days, 1 WNV)
- Citrus County: February 11 to December 29 (321 days, 0 WNV)
West Nile in Pasco County
From 1999 to 2025, CDC ArboNET counted 3 human West Nile cases in Pasco County (2 neuroinvasive) across 3 years. The worst was 2024 with 1; the latest was 2024.
See how the dates are worked out, and when mosquitoes go away for the winter.