FleaDates › Flea season › New Hampshire › Manchester
Manchester · NH
When does flea season start in Manchester?
Flea season in Manchester typically runs mid-April to late October, peaking May–Sep.
Ticks in Manchester
Local tick activity typically runs mid-March to late November, heaviest May–Oct. 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 MANCHESTER AP — a climate-based estimate; real years wobble.
Frequently asked questions
When does flea season start in Manchester?
Around mid-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 Manchester different from the rest of New Hampshire?
Not meaningfully — Manchester tracks the New Hampshire statewide estimate closely. Both are climate-based estimates, so treat the edges as fuzzy, not exact.
Do dogs in Manchester 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.