Frost dates for Sanford Dam, TX
At Sanford Dam, the median last spring frost (32°F) is Apr 20 and the median first fall frost is Oct 25, for a typical growing season of 187 days. For a 90% chance that the last frost has passed, wait until May 4. Nearby ZIP codes are in USDA hardiness zone 7a.
- Apr 20Last spring frost (median)50% chance of 32°F after this date
- May 4Safer planting date10% chance of 32°F after this date
- Oct 25First fall frost (median)50% chance of 32°F by this date
- 187 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 17 | Apr 30 | May 15 |
| 32°F | Apr 5 | Apr 20 | May 4 |
| 28°F | Mar 24 | Apr 9 | Apr 26 |
| 24°F | Mar 9 | Mar 31 | Apr 17 |
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 1 | Oct 15 | Oct 26 |
| 32°F | Oct 11 | Oct 25 | Nov 4 |
| 28°F | Oct 21 | Nov 1 | Nov 13 |
| 24°F | Oct 30 | Nov 9 | Nov 25 |
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 | 167 days | 186 days |
| 32°F | 166 days | 187 days | 205 days |
| 28°F | 184 days | 206 days | 227 days |
| 24°F | 202 days | 226 days | 250 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 79078 | 7a | 0 to 5°F | 1 km |
| 79036 | 7a | 0 to 5°F | 12 km |
| 79083 | 7a | 0 to 5°F | 19 km |
| 79062 | 7a | 0 to 5°F | 32 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 USC00418040, at 35.7047, -101.5492, elevation 895 m (2,936 ft).
- Data quality: Representative (10+ years), 23 years of freeze data.
- Average days per year at or below 32°F: 103.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Borger (14 km)
- Borger Hutchinson Co Airport (14 km)
- Panhandle (42 km)
- Dumas (43 km)
- Amarillo (54 km)
- Amarillo 7ene (54 km)
- Pampa #2 (55 km)
- Gruver (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.