Frost dates for Ozona 22se, TX
At Ozona 22se, the median last spring frost (32°F) is Apr 1 and the median first fall frost is Nov 6, for a typical growing season of 220 days. For a 90% chance that the last frost has passed, wait until Apr 21. Nearby ZIP codes are in USDA hardiness zones 8a to 8b.
- Apr 1Last spring frost (median)50% chance of 32°F after this date
- Apr 21Safer planting date10% chance of 32°F after this date
- Nov 6First fall frost (median)50% chance of 32°F by this date
- 220 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 27 | Apr 13 | May 1 |
| 32°F | Mar 9 | Apr 1 | Apr 21 |
| 28°F | Feb 24 | Mar 16 | Apr 6 |
| 24°F | Feb 5 | Mar 3 | Mar 24 |
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 15 | Oct 28 | Nov 10 |
| 32°F | Oct 24 | Nov 6 | Nov 22 |
| 28°F | Nov 1 | Nov 15 | Dec 2 |
| 24°F | Nov 10 | Nov 28 | Dec 16 |
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 | 176 days | 197 days | 220 days |
| 32°F | 194 days | 220 days | 245 days |
| 28°F | 218 days | 244 days | 272 days |
| 24°F | 241 days | 269 days | 301 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 |
|---|---|---|---|
| 76943 | 8a | 10 to 15°F | 28 km |
| 76950 | 8a | 10 to 15°F | 45 km |
| 78837 | 8b | 15 to 20°F | 60 km |
| 76936 | 8a | 10 to 15°F | 63 km |
| 79781 | 8b | 15 to 20°F | 73 km |
| 76930 | 8a | 10 to 15°F | 76 km |
| 78841 | 8b | 15 to 20°F | 77 km |
| 78840 | 8b | 15 to 20°F | 78 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 USC00416733, at 30.4267, -101.0367, elevation 646 m (2,120 ft).
- Data quality: Representative (10+ years), 16 years of freeze data.
- Average days per year at or below 32°F: 75.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Acton Rch (22 km)
- Ozona (36 km)
- Sonora (41 km)
- Pandale 11 NE (44 km)
- Hudspeth River Rch (49 km)
- Pandale 1 N (56 km)
- Eldorado (65 km)
- Carta Valley (79 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.