Frost dates for Rocksprings, TX
At Rocksprings, the median last spring frost (32°F) is Mar 8 and the median first fall frost is Nov 25, for a typical growing season of 258 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 8Last spring frost (median)50% chance of 32°F after this date
- Mar 31Safer planting date10% chance of 32°F after this date
- Nov 25First fall frost (median)50% chance of 32°F by this date
- 258 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 3 | Mar 23 | Apr 13 |
| 32°F | Feb 13 | Mar 8 | Mar 31 |
| 28°F | Jan 22 | Feb 24 | Mar 18 |
| 24°F | Dec 26 | Feb 3 | Mar 7 |
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 30 | Nov 13 | Nov 29 |
| 32°F | Nov 9 | Nov 25 | Dec 12 |
| 28°F | Nov 17 | Dec 6 | Jan 3 |
| 24°F | Nov 29 | Dec 25 | Feb 1 |
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 | 205 days | 233 days | 258 days |
| 32°F | 230 days | 258 days | 287 days |
| 28°F | 258 days | 289 days | 326 days |
| 24°F | 282 days | 327 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 89% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 78880 | 8b | 15 to 20°F | 10 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 USC00417706, at 30.0239, -100.2119, elevation 726 m (2,382 ft).
- Data quality: Representative (10+ years), 22 years of freeze data.
- Average days per year at or below 32°F: 31.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Prade Rch (42 km)
- Camp Wood (44 km)
- Brackettville 22 N (52 km)
- Carta Valley (52 km)
- Junction 4ssw (61 km)
- Hunt 10 W (68 km)
- Junction Kimble Co Airport (69 km)
- Sonora (75 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.