FleaDates › Flea season › Minnesota › Duluth
Duluth · MN
When does flea season start in Duluth?
Flea season in Duluth typically runs early May to early October, peaking Jun–Aug. That's about 2 weeks later than the Minnesota statewide estimate for this climate.
Ticks in Duluth
Local tick activity typically runs early April to early November, heaviest May–Sep. The species to know in Minnesota: blacklegged (deer) tick, American dog tick.
More on species and timing: Minnesota tick season.
Numbers come from NOAA U.S. Climate Normals (1991–2020) recorded at DULUTH — a climate-based estimate; real years wobble.
Frequently asked questions
When does flea season start in Duluth?
Around early May 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 Duluth different from the rest of Minnesota?
Somewhat. That's about 2 weeks later than the Minnesota statewide estimate for this climate. The statewide page averages several stations across Minnesota; this page uses the normals recorded at DULUTH.
Do dogs in Duluth 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 Minnesota are typically active late March to early November, a longer window than fleas get.