When to plant in Leon Valley, TX
USDA Zone 9aLeon Valley, Texas frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
A generous ~294-day season lets Leon Valley gardeners direct-sow more and still ripen long-maturity crops like melons and winter squash. Zone 9a is warm enough that Leon Valley can grow subtropical perennials, and the short (or absent) frost period barely limits the annual calendar.
Frost probability
SAN ANTONIO/SEAWORLD · 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 Leon Valley’s own odds, recorded at SAN ANTONIO/SEAWORLD.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Mar 31 | Mar 4 | Feb 11 | Nov 5 | Nov 25 | Dec 15 |
| 32°F | Mar 16 | Feb 18 | Jan 18 | Nov 17 | Dec 9 | Jan 13 |
| 28°F | Mar 3 | Jan 31 | Dec 17 | Nov 28 | Dec 29 | Feb 9 |
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 Leon Valley, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 14 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.
Leon Valley planting FAQ
When is the last spring frost in Leon Valley, TX?
Plan for the last spring frost in Leon Valley around February 18 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Leon Valley, TX?
Expect Leon Valley's first fall frost near December 9 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Leon Valley in?
Leon Valley is in USDA hardiness zone 9a. In zone 9a, winters are mild — many tender perennials overwinter here.
How long is the growing season in Leon Valley?
There are roughly 294 frost-free days in Leon Valley (a long growing season), running from the average last frost around February 18 to the first fall frost near December 9.
When should I plant tomatoes in Leon Valley?
In Leon Valley, start tomato seeds indoors around December 24–January 7, then transplant seedlings outdoors around February 25 once the danger of frost has passed.
Never miss a window in Leon Valley
An email when it’s time to start seeds, transplant, and sow — timed to Leon Valley’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- San Antonio · 9 km
- Scenic Oaks · 24 km
- Timberwood Park · 26 km
- Live Oak · 27 km
- Fair Oaks Ranch · 28 km
- Converse · 30 km
- Universal City · 30 km
- Selma · 31 km
Frost dates recorded at SAN ANTONIO/SEAWORLD, 10 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 Leon Valley, TX — Frost Dates & Zone 9a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00418169. Retrieved from https://blissgarden.com/texas/leon-valley.