Frost dates for Hebbronville, TX
At Hebbronville, the median last spring frost (32°F) is Feb 4 and the median first fall frost is Dec 12, for a typical growing season of 320 days. For a 90% chance that the last frost has passed, wait until Mar 7. Nearby ZIP codes are in USDA hardiness zone 9b.
- Feb 4Last spring frost (median)50% chance of 32°F after this date
- Mar 7Safer planting date10% chance of 32°F after this date
- Dec 12First fall frost (median)50% chance of 32°F by this date
- 320 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Jan 22 | Feb 23 | Mar 16 |
| 32°F | Dec 28 | Feb 4 | Mar 7 |
| 28°F | Dec 18 | Jan 15 | Feb 28 |
| 24°F | Dec 15 | Jan 4 | Feb 9 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Nov 12 | Dec 1 | Dec 30 |
| 32°F | Nov 22 | Dec 12 | Jan 18 |
| 28°F | Dec 4 | Dec 30 | Feb 4 |
| 24°F | Dec 9 | Jan 1 | Jan 27 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 253 days | 285 days | 322 days |
| 32°F | 278 days | 320 days | 360 days |
| 28°F | 310 days | 354 days | 365 days |
| 24°F | 343 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 94% |
| 28°F | 68% |
| 24°F | 29% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 78376 | 9b | 25 to 30°F | 20 km |
| 78361 | 9b | 25 to 30°F | 30 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USC00414058, at 27.3194, -98.6775, elevation 177 m (580 ft).
- Data quality: Representative (10+ years), 22 years of freeze data.
- Average days per year at or below 32°F: 8.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Bruni (21 km)
- Benavides 2 (40 km)
- Falfurrias (59 km)
- Freer (62 km)
- Alice (75 km)
- Zapata 1 S (76 km)
- Alice Intl Airport (80 km)
- Laredo AFB (81 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.