Frost dates for Santa Rosa 3 WNW, TX
At Santa Rosa 3 WNW, the median last spring frost (32°F) is Jan 10 and the median first fall frost is Dec 27, for a typical growing season of 355 days. For a 90% chance that the last frost has passed, wait until Feb 24. Nearby ZIP codes are in USDA hardiness zone 10a.
- Jan 10Last spring frost (median)50% chance of 32°F after this date
- Feb 24Safer planting date10% chance of 32°F after this date
- Dec 27First fall frost (median)50% chance of 32°F by this date
- 355 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 | Dec 28 | Feb 3 | Mar 8 |
| 32°F | Dec 13 | Jan 10 | Feb 24 |
| 28°F | Dec 11 | Jan 1 | Feb 1 |
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 | Nov 22 | Dec 12 | Jan 12 |
| 32°F | Dec 3 | Dec 27 | Feb 1 |
| 28°F | Dec 8 | Dec 29 | Jan 24 |
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 | 276 days | 316 days | 350 days |
| 32°F | 314 days | 355 days | 365 days |
| 28°F | 351 days | 365 days | 365 days |
| 24°F | 365 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 95% |
| 32°F | 63% |
| 28°F | 23% |
| 24°F | 5% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 78562 | 10a | 30 to 35°F | 3 km |
| 78593 | 10a | 30 to 35°F | 5 km |
| 78594 | 10a | 30 to 35°F | 11 km |
| 78543 | 10a | 30 to 35°F | 14 km |
| 78559 | 10a | 30 to 35°F | 14 km |
| 78538 | 10a | 30 to 35°F | 15 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 USC00418059, at 26.2656, -97.8714, elevation 15 m (50 ft).
- Data quality: Representative (10+ years), 25 years of freeze data.
- Average days per year at or below 32°F: 2.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Weslaco (14 km)
- Harlingen (21 km)
- Harlingen Rio Grande Airport (22 km)
- Raymondville (24 km)
- Edinburg (29 km)
- Edinburg 17 NNE (35 km)
- McAllen (39 km)
- McAllen Miller Intl Airport (39 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.