Mosquito season in Holmes County, FL: when it starts and ends

Mosquito months in Holmes County

In a normal year mosquito season in Holmes County, FL starts around February 24 and ends around January 11, about 46 weeks.

1. Jan
2. Feb
3. Mar
4. Apr
5. May
6. Jun
7. Jul
8. Aug
9. Sep
10. Oct
11. Nov
12. Dec

What to do in Holmes County, and when

• Start tipping out standing water weekly by February 10.
• Book any yard treatment for late February, ahead of the July peak.
• Repellent can go away after January 11.
• No West Nile cases since 2016, so bites in Holmes County are a nuisance; check window screens.

Holmes County against the rest of FL

Holmes County has the 48th longest season of 67 FL counties, at 321 days against 365 in Broward County and 281 in Gilchrist County. Its mean temperature is 66.7°F.

• Citrus County: February 11 to December 29 (321 days, 0 WNV)
• Sumter County: February 11 to December 29 (321 days, 2 WNV)
• Jackson County: February 9 to December 22 (316 days, 0 WNV)
• Alachua County: February 12 to December 25 (316 days, 0 WNV)

West Nile in Holmes County

From 1999 to 2025, CDC ArboNET counted 5 human West Nile cases in Holmes County (4 neuroinvasive) across 2 years. The worst was 2012 with 3; the latest was 2012.

More: how the dates are worked out · when mosquitoes go away for the winter.