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Planting calendar for ZIP 94599 (Yountville, CA)

When to plant vegetables in Yountville, CA (USDA hardiness zone 9b). Typical last spring frost around Mar 2, 2026 27 days year to year), first fall frost around Nov 27, 202618 days).

Playing it safe? Spring frost holds off until about Apr 5, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

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Month by month in Yountville, CA

January

February

March

April

September

December

Understand your frost dates

Frost dates for ZIP 94599: NOAA 1991-2020 normals (USC00048351 SONOMA, CA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.