Mosquito season in Columbia County, FL: when it starts and ends
Mosquito months in Columbia County
In a normal year mosquito season in Columbia County, FL starts around February 13 and ends around December 15, about 44 weeks.
- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec
What to do in Columbia County, and when
- Start tipping out standing water weekly by January 30.
- Book any yard treatment for mid February, ahead of the July peak.
- Repellent can go away after December 15.
- No West Nile cases since 2016, so bites in Columbia County are a nuisance; check window screens.
Columbia County against the rest of FL
Columbia County has the 54th longest season of 67 FL counties, at 305 days against 365 in Broward County and 281 in Gilchrist County. Its mean temperature is 67.4°F.
- Walton County: February 12 to December 16 (307 days, 1 WNV)
- Baker County: February 17 to December 21 (307 days, 0 WNV)
- Dixie County: February 13 to December 14 (304 days, 0 WNV)
- Madison County: February 14 to December 15 (304 days, 0 WNV)
West Nile in Columbia County
CDC ArboNET lists no human West Nile cases for Columbia County from 1999 to 2025, though virus turned up in birds, mosquitoes or horses in 4 of those years.
See how the dates are worked out, and when mosquitoes go away for the winter.