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Planting calendar for ZIP 92310 (Fort Irwin, CA)

When to plant vegetables in Fort Irwin, CA (USDA hardiness zone 9a). Typical last spring frost around Feb 19, 2026 18 days year to year), first fall frost around Nov 26, 202612 days).

Playing it safe? Spring frost holds off until about Mar 14, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

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

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Month by month in Fort Irwin, CA

January

February

March

September

November

December

Understand your frost dates

Frost dates for ZIP 92310: NOAA 1991-2020 normals (USW00023161 BARSTOW DAGGETT AP, CA US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.