When to plant in San Benito, TX
USDA Zone 10aEverything below — frost dates, hardiness zone, and what to plant when in San Benito, Texas — is derived from the closest NOAA station with complete climate normals.
A ~-6-day frost-free window makes San Benito a short-season garden: choose early varieties and start long-season crops indoors well ahead of the last frost. In zone 10a, frost is a minor factor for San Benito — most perennials thrive, and annual vegetables can go out early and stay late.
Frost probability
HARLINGEN · 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 San Benito’s own odds, recorded at HARLINGEN.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Feb 28 | Jan 21 | Dec 17 | Nov 29 | Dec 26 | Feb 2 |
| 32°F | Feb 4 | Jan 9 | Dec 15 | Dec 9 | Jan 3 | Jan 29 |
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 San Benito, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 27 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.
San Benito planting FAQ
When is the last spring frost in San Benito, TX?
San Benito's average last spring frost falls near January 9 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in San Benito, TX?
Expect San Benito's first fall frost near January 3 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is San Benito in?
San Benito is in USDA hardiness zone 10a. In zone 10a, winters are mild — many tender perennials overwinter here.
How long is the growing season in San Benito?
San Benito has about -6 frost-free days — a short growing season — between the average last spring frost (January 9) and first fall frost (January 3).
When should I plant tomatoes in San Benito?
For San Benito, sow tomatoes indoors about November 14–November 28 and move the seedlings out around January 16, after the last spring frost.
Never miss a window in San Benito
An email when it’s time to start seeds, transplant, and sow — timed to San Benito’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Harlingen · 9 km
- Brownsville · 23 km
- Mercedes · 27 km
- Weslaco · 34 km
- Donna · 40 km
- Raymondville · 41 km
- Alamo · 48 km
- San Juan · 51 km
Frost dates recorded at HARLINGEN, 9 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 San Benito, TX — Frost Dates & Zone 10a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00413943. Retrieved from https://blissgarden.com/texas/san-benito.