Skip to main content

Planting calendar for ZIP 94402 (San Mateo, CA)

When to plant vegetables in San Mateo, CA (USDA hardiness zone 10a). Typical last spring frost around Dec 29, 2026 (±13 days year to year), first fall frost around Dec 26, 2026 (±13 days).

Playing it safe? Spring frost holds off until about Jan 14, 2027 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full San Mateo, CA planting calendar for dates typical of the whole city.

Turn these dates into a plan: lay out your beds, place each crop on its sow and transplant dates, and get a reminder when it’s time. Free on one garden, no credit card.

Plan my garden for 94402

Month by month in San Mateo, CA

January

September

October

November

December

Understand your frost dates

Where these dates come from

Frost dates for ZIP 94402 come from NOAA 1991-2020 normals (USW00023234 SAN FRANCISCO INTL AP, CA US). You can look up that station’s record yourself.

Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.