Frost dates for Carrizo Springs 3s, TX
At Carrizo Springs 3s, the median last spring frost (32°F) is Mar 5 and the median first fall frost is Nov 22, for a typical growing season of 265 days. For a 90% chance that the last frost has passed, wait until Mar 30. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.
- Mar 5Last spring frost (median)50% chance of 32°F after this date
- Mar 30Safer planting date10% chance of 32°F after this date
- Nov 22First fall frost (median)50% chance of 32°F by this date
- 265 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 | Feb 25 | Mar 18 | Apr 8 |
| 32°F | Feb 10 | Mar 5 | Mar 30 |
| 28°F | Jan 19 | Feb 20 | Mar 15 |
| 24°F | Dec 27 | Jan 30 | Mar 6 |
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 29 | Nov 12 | Nov 30 |
| 32°F | Nov 6 | Nov 22 | Dec 11 |
| 28°F | Nov 16 | Dec 5 | Jan 3 |
| 24°F | Nov 27 | Dec 22 | 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 | 215 days | 241 days | 267 days |
| 32°F | 236 days | 265 days | 295 days |
| 28°F | 259 days | 292 days | 330 days |
| 24°F | 288 days | 330 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 | 88% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 78834 | 9a | 20 to 25°F | 6 km |
| 78827 | 9a | 20 to 25°F | 16 km |
| 78836 | 9b | 25 to 30°F | 30 km |
| 78860 | 9a | 20 to 25°F | 36 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 USC00411486, at 28.4894, -99.8733, elevation 187 m (613 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 25.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Crystal City (22 km)
- Cotulla La Salle Co Airport (64 km)
- Eagle Pass 3n (66 km)
- Dilley (71 km)
- Encinal (74 km)
- Fowlerton (101 km)
- Brackettville (106 km)
- Laredo 2 (109 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.