Frost dates for Fort Worth Wsfo, TX
At Fort Worth Wsfo, the median last spring frost (32°F) is Mar 10 and the median first fall frost is Nov 20, for a typical growing season of 255 days. For a 90% chance that the last frost has passed, wait until Mar 31. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 10Last spring frost (median)50% chance of 32°F after this date
- Mar 31Safer planting date10% chance of 32°F after this date
- Nov 20First fall frost (median)50% chance of 32°F by this date
- 255 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 | Mar 6 | Mar 26 | Apr 16 |
| 32°F | Feb 21 | Mar 10 | Mar 31 |
| 28°F | Feb 2 | Feb 26 | Mar 17 |
| 24°F | Jan 16 | Feb 10 | Mar 8 |
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 26 | Nov 9 | Nov 26 |
| 32°F | Nov 4 | Nov 20 | Dec 8 |
| 28°F | Nov 13 | Dec 1 | Dec 23 |
| 24°F | Nov 24 | Dec 18 | Jan 15 |
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 | 206 days | 230 days | 256 days |
| 32°F | 228 days | 255 days | 281 days |
| 28°F | 251 days | 278 days | 308 days |
| 24°F | 276 days | 307 days | 345 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 98% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 76137 | 8b | 15 to 20°F | 3 km |
| 76117 | 8b | 15 to 20°F | 4 km |
| 76148 | 8b | 15 to 20°F | 6 km |
| 76111 | 8b | 15 to 20°F | 6 km |
| 76131 | 8b | 15 to 20°F | 7 km |
| 76180 | 8b | 15 to 20°F | 7 km |
| 76103 | 8b | 15 to 20°F | 10 km |
| 76182 | 8b | 15 to 20°F | 10 km |
| 76118 | 8b | 15 to 20°F | 11 km |
| 76053 | 8b | 15 to 20°F | 11 km |
| 76054 | 8b | 15 to 20°F | 11 km |
| 76112 | 8b | 15 to 20°F | 12 km |
| 76105 | 8b | 15 to 20°F | 13 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 USC00413285, at 32.8342, -97.2981, elevation 196 m (644 ft).
- Data quality: Standard (24+ years of data), 24 years of freeze data.
- Average days per year at or below 32°F: 32.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Fort Worth Meacham Field Naaf (5 km)
- Fort Worth Meacham Field (6 km)
- Fort Worth Alliance Airport (16 km)
- Fort Worth NAS (16 km)
- Fort Worth Nature Center (17 km)
- Arlington Six Flags (23 km)
- Benbrook Dam (25 km)
- Grapevine Dam (26 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.