Frost dates for Fort Davis, TX
At Fort Davis, the median last spring frost (32°F) is Apr 5 and the median first fall frost is Nov 1, for a typical growing season of 209 days. For a 90% chance that the last frost has passed, wait until Apr 24. Nearby ZIP codes are in USDA hardiness zones 8a to 8b.
- Apr 5Last spring frost (median)50% chance of 32°F after this date
- Apr 24Safer planting date10% chance of 32°F after this date
- Nov 1First fall frost (median)50% chance of 32°F by this date
- 209 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 | Apr 1 | Apr 17 | May 3 |
| 32°F | Mar 17 | Apr 5 | Apr 24 |
| 28°F | Feb 28 | Mar 18 | Apr 10 |
| 24°F | Feb 8 | Mar 3 | Mar 22 |
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 9 | Oct 23 | Nov 4 |
| 32°F | Oct 17 | Nov 1 | Nov 14 |
| 28°F | Oct 27 | Nov 11 | Nov 26 |
| 24°F | Nov 5 | Nov 22 | Dec 9 |
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 | 167 days | 189 days | 208 days |
| 32°F | 186 days | 209 days | 230 days |
| 28°F | 208 days | 236 days | 261 days |
| 24°F | 235 days | 265 days | 291 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
Closest ZIP codes (each is closer to another station)
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 79734 | 8a | 10 to 15°F | 13 km |
| 79718 | 8a | 10 to 15°F | 46 km |
| 79830 | 8b | 15 to 20°F | 50 km |
| 79780 | 8a | 10 to 15°F | 54 km |
| 79854 | 8a | 10 to 15°F | 69 km |
| 79785 | 8a | 10 to 15°F | 80 km |
| 79772 | 8a | 10 to 15°F | 94 km |
| 79843 | 8a | 10 to 15°F | 96 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 USC00413262, at 30.5997, -103.8869, elevation 1482 m (4,864 ft).
- Data quality: Representative (10+ years), 20 years of freeze data.
- Average days per year at or below 32°F: 72.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Mount Locke (18 km)
- Alpine 7nw (27 km)
- Alpine (33 km)
- Marfa 3w (37 km)
- Balmorhea (45 km)
- Kent 8se (51 km)
- Valentine (59 km)
- Marathon (74 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.