When to plant in Port Neches, TX
USDA Zone 9bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Port Neches, Texas — all computed from Port Neches's nearest NOAA weather station.
A generous ~296-day season lets Port Neches gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. In zone 9b, frost is a minor factor for Port Neches — most perennials thrive, and annual vegetables can go out early and stay late.
Frost probability
PORT ARTHUR SE TX AP · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Port Neches’s own odds, recorded at PORT ARTHUR SE TX AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 27 | Mar 4 | Feb 5 | Nov 3 | Nov 23 | Dec 12 |
| 32°F | Mar 13 | Feb 14 | Jan 17 | Nov 15 | Dec 7 | Jan 9 |
| 28°F | Mar 3 | Jan 28 | Dec 23 | Dec 1 | Jan 1 | Feb 3 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Nothing new to sow or transplant outdoors in the next few weeks — a seasonal lull. Check the full-year calendar below for the next window.
Full-year planting calendar
Each bar is the exact window to take a planting action in Port Neches, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 34 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Port Neches planting FAQ
When is the last spring frost in Port Neches, TX?
On average, the last spring frost in Port Neches is around February 14 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Port Neches, TX?
In Port Neches, the first 32°F freeze of fall lands around December 7 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Port Neches in?
Port Neches is in USDA hardiness zone 9b. In zone 9b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Port Neches?
Port Neches has about 296 frost-free days — a long growing season — between the average last spring frost (February 14) and first fall frost (December 7).
When should I plant tomatoes in Port Neches?
For Port Neches, sow tomatoes indoors about December 20–January 3 and move the seedlings out around February 21, after the last spring frost.
Never miss a window in Port Neches
An email when it’s time to start seeds, transplant, and sow — timed to Port Neches’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Nederland · 4 km
- Groves · 5 km
- Port Arthur · 9 km
- Beaumont · 22 km
- Orange · 27 km
- Lumberton · 40 km
- Sulphur · 65 km
- Lake Charles · 77 km
Frost dates recorded at PORT ARTHUR SE TX AP, 6 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Port Neches, TX — Frost Dates & Zone 9b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00012917. Retrieved from https://blissgarden.com/texas/port-neches.