FleaDates › Flea season › Delaware › Dover
Dover · DE
When does flea season start in Dover?
Flea season in Dover typically runs late March to mid-November, peaking May–Oct.
Ticks in Dover
Local tick activity typically runs mid-February to late December, heaviest Apr–Oct. The species to know in Delaware: blacklegged (deer) tick, lone star tick, American dog tick.
More on species and timing: Delaware tick season.
Numbers come from NOAA U.S. Climate Normals (1991–2020) recorded at DOVER — a climate-based estimate; real years wobble.
Frequently asked questions
When does flea season start in Dover?
Around late 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 Dover different from the rest of Delaware?
Not meaningfully — Dover tracks the Delaware statewide estimate closely. Both are climate-based estimates, so treat the edges as fuzzy, not exact.
Do dogs in Dover 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 Delaware are typically active mid-February to mid-December, a longer window than fleas get.