Texas Frost Dates & Growing Zones by City
Typical (50%) last spring frosts in the 6 Texas cities with frost dates on this site fall between Feb 2 (Houston) and Mar 5 (Fort Worth). Typical frost-free seasons run from 261 days (El Paso) to 327 days (Houston).
By the 2023 USDA hardiness map, these cities are in zones 8b, 9a and 9b.
Each city's dates come from the nearest NOAA station that passes our quality rules. The methodology explains how we pick it.
| City | Last frost (50%) | First frost (50%) | Season (days, 50%) | Zone 2023 | Confidence | Planting calendar |
|---|---|---|---|---|---|---|
| Houston frost dates | Feb 2* | Dec 25* | 327 | 9a–9b | Medium | Houston planting calendar |
| San Antonio frost dates | Feb 25 | Nov 28 | 277 | 8b–9a | Medium | San Antonio planting calendar |
| Dallas frost dates | Mar 2 | Nov 29 | 272 | 8b | High | Dallas planting calendar |
| Fort Worth frost dates | Mar 5 | Nov 24 | 264 | 8b | Medium | Fort Worth planting calendar |
| Austin frost dates | Feb 20* | Dec 3* | 291 | 8b–9a | High | Austin planting calendar |
| El Paso frost dates | Mar 2 | Nov 20 | 261 | 8b | High | El Paso planting calendar |
* Not every winter reaches 32°F here; the date describes the years that do (NOAA conditional probability).
Station match, data and rules: methodology. Long-term odds, not a forecast.