Frost dates for Dalhart Muni Airport, TX
At Dalhart Muni Airport, the median last spring frost (32°F) is Apr 21 and the median first fall frost is Oct 20, for a typical growing season of 181 days. For a 90% chance that the last frost has passed, wait until May 4. Nearby ZIP codes are in USDA hardiness zones 6b to 7a.
- Apr 21Last spring frost (median)50% chance of 32°F after this date
- May 4Safer planting date10% chance of 32°F after this date
- Oct 20First fall frost (median)50% chance of 32°F by this date
- 181 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 18 | May 1 | May 13 |
| 32°F | Apr 7 | Apr 21 | May 4 |
| 28°F | Mar 26 | Apr 10 | Apr 25 |
| 24°F | Mar 12 | Mar 30 | Apr 13 |
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 30 | Oct 12 | Oct 22 |
| 32°F | Oct 7 | Oct 20 | Nov 1 |
| 28°F | Oct 17 | Oct 29 | Nov 10 |
| 24°F | Oct 24 | Nov 7 | Nov 20 |
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 | 146 days | 162 days | 179 days |
| 32°F | 164 days | 181 days | 198 days |
| 28°F | 182 days | 200 days | 220 days |
| 24°F | 200 days | 221 days | 243 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 | 24 km |
| 79018 | 7a | 0 to 5°F | 39 km |
| 79087 | 6b | -5 to 0°F | 47 km |
| 79029 | 7a | 0 to 5°F | 49 km |
| 79013 | 7a | 0 to 5°F | 50 km |
| 79084 | 7a | 0 to 5°F | 54 km |
| 79051 | 6b | -5 to 0°F | 56 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 USW00093042, at 36.0167, -102.5500, elevation 1216 m (3,990 ft).
- Data quality: Standard (24+ years of data), 25 years of freeze data.
- Average days per year at or below 32°F: 131.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Dalhart (6 km)
- Dalhart 6 SW (6 km)
- Hartley (21 km)
- Channing 2 (42 km)
- Dumas (54 km)
- Boys Rch (60 km)
- Bravo (60 km)
- Stratford (63 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.