FleaDates › Flea season › Kentucky › Louisville
Louisville · KY
When does flea season start in Louisville?
Flea season in Louisville typically runs mid-March to mid-November, peaking Apr–Oct.
Ticks in Louisville
Local tick activity typically runs early February to late December, heaviest Apr–Oct. The species to know in Kentucky: lone star tick, American dog tick, blacklegged (deer) tick.
More on species and timing: Kentucky tick season.
Numbers come from NOAA U.S. Climate Normals (1991–2020) recorded at LOUISVILLE INTL AP — a climate-based estimate; real years wobble.
Frequently asked questions
When does flea season start in Louisville?
Around mid-March in a typical year, once local averages hold around 50°F. A warm spring pulls it earlier — prevention shouldn't wait for the calendar.
Is flea season in Louisville different from the rest of Kentucky?
Not meaningfully — Louisville tracks the Kentucky statewide estimate closely. Both are climate-based estimates, so treat the edges as fuzzy, not exact.
Do dogs in Louisville need prevention outside flea season?
Yes — vets recommend year-round parasite prevention regardless of the local calendar. Indoor fleas ignore the weather entirely, and ticks in Kentucky are typically active early February to mid-December, a longer window than fleas get.