Frost dates for Lake Ament, TX
At Lake Ament, the median last spring frost (32°F) is Mar 4 and the median first fall frost is Nov 25, for a typical growing season of 266 days. For a 90% chance that the last frost has passed, wait until Mar 21. Nearby ZIP codes are in USDA hardiness zones 8a to 9a.
- Mar 4Last spring frost (median)50% chance of 32°F after this date
- Mar 21Safer planting date10% chance of 32°F after this date
- Nov 25First fall frost (median)50% chance of 32°F by this date
- 266 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 28 | Mar 16 | Apr 5 |
| 32°F | Feb 9 | Mar 4 | Mar 21 |
| 28°F | Jan 13 | Feb 15 | Mar 9 |
| 24°F | Dec 20 | Jan 23 | Mar 1 |
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 | Oct 29 | Nov 14 | Dec 1 |
| 32°F | Nov 6 | Nov 25 | Dec 11 |
| 28°F | Nov 19 | Dec 8 | Dec 30 |
| 24°F | Nov 30 | Dec 25 | Feb 3 |
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 | 214 days | 240 days | 264 days |
| 32°F | 241 days | 266 days | 295 days |
| 28°F | 265 days | 296 days | 332 days |
| 24°F | 298 days | 339 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 84% |
Closest ZIP codes (each is closer to another station)
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 79852 | 9a | 20 to 25°F | 15 km |
| 79834 | 8b | 15 to 20°F | 38 km |
| 79846 | 8b | 15 to 20°F | 48 km |
| 79842 | 8b | 15 to 20°F | 77 km |
| 79830 | 8b | 15 to 20°F | 85 km |
| 79845 | 9a | 20 to 25°F | 89 km |
| 79843 | 8a | 10 to 15°F | 99 km |
| 79848 | 8b | 15 to 20°F | 129 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 USC00414968, at 29.4589, -103.4994, elevation 1100 m (3,609 ft).
- Data quality: Estimated from nearby stations (2+ years), 10 years of freeze data.
- Average days per year at or below 32°F: 28.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Terlingua Rch 2 (9 km)
- Terlingua (15 km)
- Study Butte (15 km)
- Chisos Basin (28 km)
- Panther Junction 2 N (31 km)
- Panther Junction (32 km)
- Lajitas (33 km)
- Castolon (36 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.