Frost dates for Austin-Camp Mabry, TX
At Austin-Camp Mabry, the median last spring frost (32°F) is Feb 20 and the median first fall frost is Dec 3, for a typical growing season of 291 days. For a 90% chance that the last frost has passed, wait until Mar 14. Nearby ZIP codes are in USDA hardiness zone 9a.
- Feb 20Last spring frost (median)50% chance of 32°F after this date
- Mar 14Safer planting date10% chance of 32°F after this date
- Dec 3First fall frost (median)50% chance of 32°F by this date
- 291 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 14 | Mar 6 | Mar 27 |
| 32°F | Jan 23 | Feb 20 | Mar 14 |
| 28°F | Dec 29 | Feb 1 | Mar 3 |
| 24°F | Dec 24 | Jan 20 | Feb 18 |
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 5 | Nov 22 | Dec 10 |
| 32°F | Nov 15 | Dec 3 | Jan 1 |
| 28°F | Nov 27 | Dec 27 | Feb 1 |
| 24°F | Dec 12 | Jan 7 | Feb 10 |
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 | 261 days | 288 days |
| 32°F | 258 days | 291 days | 326 days |
| 28°F | 288 days | 329 days | 365 days |
| 24°F | 325 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 99% |
| 28°F | 88% |
| 24°F | 46% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 78756 | 9a | 20 to 25°F | 2 km |
| 78703 | 9a | 20 to 25°F | 3 km |
| 78731 | 9a | 20 to 25°F | 3 km |
| 78705 | 9a | 20 to 25°F | 4 km |
| 78751 | 9a | 20 to 25°F | 4 km |
| 78757 | 9a | 20 to 25°F | 4 km |
| 78712 | 9a | 20 to 25°F | 5 km |
| 78746 | 9a | 20 to 25°F | 5 km |
| 78722 | 9a | 20 to 25°F | 6 km |
| 78752 | 9a | 20 to 25°F | 6 km |
| 78723 | 9a | 20 to 25°F | 7 km |
| 78730 | 9a | 20 to 25°F | 9 km |
| 78735 | 9a | 20 to 25°F | 12 km |
| 78733 | 9a | 20 to 25°F | 12 km |
| 78754 | 9a | 20 to 25°F | 12 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 USW00013958, at 30.3208, -97.7603, elevation 204 m (670 ft).
- Data quality: Standard (24+ years of data), 30 years of freeze data.
- Average days per year at or below 32°F: 12.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Austin Great Hills (10 km)
- Austin 6s (11 km)
- Austin Bergstrom Airport (17 km)
- Dripping Springs 6 E (25 km)
- Elgin 1 N (38 km)
- Georgetown Lake (40 km)
- Cedar Creek 5 S (43 km)
- Taylor 1nw (44 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.