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Sacramento · CA

When does flea season start in Sacramento?

Flea season in Sacramento typically runs early February to early December, peaking Apr–Oct.

Flea season early February to early December Peak Apr–Oct
January — Low February — Moderate March — Moderate April — High May — Peak June — Peak July — Peak August — Peak September — Peak October — High November — Moderate December — Low J F M A M J J A S O N D Sacramento Peak Apr–Oct

Ticks in Sacramento

Local tick activity typically runs year-round, heaviest Mar–Nov. The species to know in California: western blacklegged tick, American dog tick, brown dog tick.

More on species and timing: California tick season.

Numbers come from NOAA U.S. Climate Normals (1991–2020) recorded at SACRAMENTO METRO AP — a climate-based estimate; real years wobble.

Frequently asked questions

When does flea season start in Sacramento?

Around early February 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 Sacramento different from the rest of California?

Not meaningfully — Sacramento tracks the California statewide estimate closely. Both are climate-based estimates, so treat the edges as fuzzy, not exact.

Do dogs in Sacramento 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 California are typically active year-round, a longer window than fleas get.

Elsewhere in California