When to plant in San Antonio, TX
Planting dates worked out from San Antonio's own frost records, not a generic zone chart.
Safe to plant out
Mar 7
1 year in 10 has a later frost
Average last frost
Feb 18
about a 50% chance of a later one
Average first fall frost
Nov 25
1 year in 10 by Nov 1
Frost-free days
284
median, 1991–2020
Station used: San Antonio Incarnate Word · 5.5 km away · station 213 m, town 198 m. How we match towns to stations
This season
Plan your garden.
Planting dates for common crops
| Crop | Start indoors | Plant out or sow | Harvest from |
|---|---|---|---|
| Tomato | Jan 10 – Jan 24 | Mar 7 – Mar 21 | May 1 |
| Sweet pepper | Dec 27 – Jan 10 | Mar 7 – Mar 21 | May 6 |
| Lettuce (leaf) | Dec 17 – Dec 24 | Jan 21 – Feb 4 | Mar 2 |
| Peas | — | Jan 7 – Feb 4 | Mar 3 |
| Bush beans | — | Feb 28 – Mar 21 | Apr 19 |
| Carrot | — | Jan 28 – Mar 11 | Mar 29 |
| Beet | — | Jan 21 – Mar 4 | Mar 12 |
| Potato | — | Jan 28 – Feb 18 | Apr 8 |
| Kale | Dec 10 – Dec 24 | Jan 21 – Feb 4 | Mar 5 |
| Broccoli | Dec 10 – Dec 24 | Jan 21 – Feb 11 | Mar 22 |
| Cucumber | Feb 7 – Feb 14 | Mar 7 – Mar 21 | Apr 26 |
| Summer squash and zucchini | Feb 7 – Feb 14 | Mar 7 – Mar 21 | Apr 21 |
| Winter squash | Feb 7 – Feb 14 | Mar 7 – Mar 21 | May 26 |
| Sweet corn | — | Feb 28 – Mar 21 | Apr 29 |
| Onion (from sets) | — | Jan 21 – Feb 11 | Apr 21 |
| Garlic | — | Nov 11 – Dec 9 (fall) | following summer |
| Spinach | — | Jan 7 – Feb 4 | Feb 14 |
| Basil | Jan 24 – Feb 7 | Mar 7 – Mar 21 | May 3 |
San Antonio's weather over time
How the growing season has shifted here, year by year, from the station's own records.
Each year's last spring frostLong-term trend
See the data as a table
| Year | Last spring frost |
|---|---|
| 1999 | Feb 15 |
| 2000 | Jan 31 |
| 2001 | Feb 11 |
| 2002 | Mar 6 |
| 2003 | Mar 31 |
| 2004 | Feb 16 |
| 2005 | Jan 24 |
| 2006 | Feb 20 |
| 2007 | Mar 6 |
| 2008 | Mar 8 |
| 2009 | Feb 23 |
| 2010 | Feb 26 |
| 2011 | Feb 14 |
| 2012 | Feb 13 |
| 2013 | Feb 1 |
| 2018 | Feb 13 |
| 2019 | Mar 7 |
| 2020 | Mar 1 |
| 2021 | Feb 21 |
| 2024 | Feb 19 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1998 | 348 |
| 1999 | 258 |
| 2000 | 291 |
| 2001 | 289 |
| 2002 | 274 |
| 2003 | 237 |
| 2004 | 287 |
| 2005 | 308 |
| 2006 | 283 |
| 2007 | 264 |
| 2008 | 268 |
| 2009 | 284 |
| 2010 | 273 |
| 2011 | 286 |
| 2012 | 300 |
| 2013 | 299 |
| 2018 | 273 |
| 2019 | 238 |
| 2021 | 294 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1998 | 26.9 °C |
| 1999 | 26.3 °C |
| 2000 | 26.5 °C |
| 2001 | 26.0 °C |
| 2002 | 25.8 °C |
| 2003 | 26.1 °C |
| 2004 | 25.2 °C |
| 2005 | 26.3 °C |
| 2006 | 27.1 °C |
| 2007 | 24.5 °C |
| 2008 | 26.3 °C |
| 2009 | 27.1 °C |
| 2010 | 26.3 °C |
| 2011 | 28.3 °C |
| 2012 | 26.9 °C |
| 2013 | 26.0 °C |
| 2018 | 26.7 °C |
| 2019 | 26.4 °C |
| 2020 | 26.1 °C |
| 2024 | 27.1 °C |
What this means for you: This station's record is too short to show a reliable trend yet.
Source: daily records from San Antonio Incarnate Word (NOAA GHCN-Daily). Years with too many missing days are left out.