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Planting calendar for ZIP 77642 (Port Arthur, TX)

When to plant vegetables in Port Arthur, TX (USDA hardiness zone 9b). Typical last spring frost around Feb 14, 2026 21 days year to year), first fall frost around Dec 7, 202621 days).

Playing it safe? Spring frost holds off until about Mar 12, 2026 in roughly 9 years out of 10 — a good target for tender crops like tomatoes and peppers.

See the full Port Arthur, TX planting calendar for dates typical of the whole city.

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Month by month in Port Arthur, TX

January

February

March

September

November

December

Understand your frost dates

Frost dates for ZIP 77642: NOAA 1991-2020 normals (USW00012917 PORT ARTHUR SE TX AP, TX US). Your exact dates depend on your address and microclimate. Schedules are guidance, not guarantees.