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

Mosquito months in Jackson County

In a normal year mosquito season in Jackson County, FL starts around February 9 and ends around December 22, about 45 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 Jackson County, and when

• Start tipping out standing water weekly by January 26.
• Book any yard treatment for early February, ahead of the July peak.
• Repellent can go away after December 22.
• No West Nile cases since 2016, so bites in Jackson County are a nuisance; check window screens.

Jackson County against the rest of FL

Jackson County has the 49th longest season of 67 FL counties, at 316 days against 365 in Broward County and 281 in Gilchrist County. Its mean temperature is 68.3°F.

• Sumter County: February 11 to December 29 (321 days, 2 WNV)
• Holmes County: February 24 to January 11 (321 days, 0 WNV)
• Alachua County: February 12 to December 25 (316 days, 0 WNV)
• Santa Rosa County: February 13 to December 24 (314 days, 4 WNV)

West Nile in Jackson County

From 1999 to 2025, CDC ArboNET counted 2 human West Nile cases in Jackson County (1 neuroinvasive) across 1 year. The worst was 2012 with 2; the latest was 2012.

More: how the dates are worked out · when the season starts across the US.