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