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Planting calendar for ZIP 94582 (San Ramon, CA)

When to plant vegetables in San Ramon, CA (USDA hardiness zone 9b). Typical last spring frost around Feb 15, 2026 23 days year to year), first fall frost around Dec 2, 202616 days).

Playing it safe? Spring frost holds off until about Mar 16, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

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Month by month in San Ramon, CA

January

February

March

September

October

November

December

Understand your frost dates

Frost dates for ZIP 94582: NOAA 1991-2020 normals (USC00044997 LIVERMORE, CA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.