Frost dates for Encinal, TX
At Encinal, the median last spring frost (32°F) is Feb 21 and the median first fall frost is Dec 9, for a typical growing season of 296 days. For a 90% chance that the last frost has passed, wait until Mar 16. Nearby ZIP codes are in USDA hardiness zone 9b.
- Feb 21Last spring frost (median)50% chance of 32°F after this date
- Mar 16Safer planting date10% chance of 32°F after this date
- Dec 9First fall frost (median)50% chance of 32°F by this date
- 296 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 | Feb 6 | Mar 6 | Mar 30 |
| 32°F | Jan 16 | Feb 21 | Mar 16 |
| 28°F | Dec 24 | Jan 31 | Mar 5 |
| 24°F | Dec 15 | Jan 14 | Feb 21 |
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 7 | Nov 26 | Dec 14 |
| 32°F | Nov 21 | Dec 9 | Jan 8 |
| 28°F | Dec 5 | Dec 27 | Feb 3 |
| 24°F | Dec 12 | Jan 2 | Feb 8 |
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 | 235 days | 264 days | 297 days |
| 32°F | 263 days | 296 days | 337 days |
| 28°F | 294 days | 334 days | 365 days |
| 24°F | 326 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 98% |
| 28°F | 84% |
| 24°F | 46% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 78019 | 9b | 25 to 30°F | 12 km |
| 78044 | 9b | 25 to 30°F | 31 km |
| 78045 | 9b | 25 to 30°F | 33 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 USC00412906, at 27.9775, -99.3847, elevation 166 m (545 ft).
- Data quality: Representative (10+ years), 16 years of freeze data.
- Average days per year at or below 32°F: 11.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Laredo 2 (47 km)
- Laredo AFB (50 km)
- Cotulla La Salle Co Airport (56 km)
- Carrizo Springs 3s (74 km)
- Freer (76 km)
- Fowlerton (79 km)
- Dilley (81 km)
- Bruni (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.