Frost dates for Dalhart 6 SW, TX
At Dalhart 6 SW, the median last spring frost (32°F) is Apr 28 and the median first fall frost is Oct 16, for a typical growing season of 170 days. For a 90% chance that the last frost has passed, wait until May 9. Nearby ZIP codes are in USDA hardiness zones 6b to 7a.
- Apr 28Last spring frost (median)50% chance of 32°F after this date
- May 9Safer planting date10% chance of 32°F after this date
- Oct 16First fall frost (median)50% chance of 32°F by this date
- 170 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 25 | May 7 | May 19 |
| 32°F | Apr 15 | Apr 28 | May 9 |
| 28°F | Apr 3 | Apr 16 | Apr 30 |
| 24°F | Mar 20 | Apr 6 | Apr 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 | Sep 25 | Oct 7 | Oct 18 |
| 32°F | Oct 3 | Oct 16 | Oct 26 |
| 28°F | Oct 10 | Oct 24 | Nov 4 |
| 24°F | Oct 21 | Nov 2 | Nov 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 | 133 days | 151 days | 168 days |
| 32°F | 153 days | 170 days | 187 days |
| 28°F | 169 days | 189 days | 207 days |
| 24°F | 189 days | 208 days | 228 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 |
|---|---|---|---|
| 79022 | 6b | -5 to 0°F | 10 km |
| 79044 | 7a | 0 to 5°F | 27 km |
| 79018 | 7a | 0 to 5°F | 41 km |
| 79087 | 6b | -5 to 0°F | 44 km |
| 88436 | 6b | -5 to 0°F | 52 km |
| 79029 | 7a | 0 to 5°F | 54 km |
| 79013 | 7a | 0 to 5°F | 56 km |
| 79084 | 7a | 0 to 5°F | 60 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 USC00412235, at 36.0072, -102.6133, elevation 1219 m (4,000 ft).
- Data quality: Representative (10+ years), 14 years of freeze data.
- Average days per year at or below 32°F: 155.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Dalhart Muni Airport (6 km)
- Dalhart (10 km)
- Hartley (25 km)
- Channing 2 (44 km)
- Bravo (56 km)
- Dumas (60 km)
- Boys Rch (62 km)
- Stratford (68 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.