Frost dates for Cotulla La Salle Co Airport, TX
At Cotulla La Salle Co Airport, the median last spring frost (32°F) is Feb 11 and the median first fall frost is Dec 3, for a typical growing season of 300 days. For a 90% chance that the last frost has passed, wait until Mar 9. Nearby ZIP codes are in USDA hardiness zone 9a.
- Feb 11Last spring frost (median)50% chance of 32°F after this date
- Mar 9Safer planting date10% chance of 32°F after this date
- Dec 3First fall frost (median)50% chance of 32°F by this date
- 300 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 1 | Mar 1 | Mar 23 |
| 32°F | Jan 5 | Feb 11 | Mar 9 |
| 28°F | Dec 15 | Jan 20 | Feb 28 |
| 24°F | Dec 8 | Jan 7 | Feb 14 |
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 5 | Nov 23 | Dec 14 |
| 32°F | Nov 15 | Dec 3 | Jan 5 |
| 28°F | Nov 25 | Dec 19 | Jan 24 |
| 24°F | Dec 4 | Jan 1 | 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 | 240 days | 269 days | 302 days |
| 32°F | 262 days | 300 days | 339 days |
| 28°F | 295 days | 337 days | 365 days |
| 24°F | 333 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 99% |
| 28°F | 82% |
| 24°F | 41% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 78014 | 9a | 20 to 25°F | 12 km |
| 78001 | 9a | 20 to 25°F | 25 km |
| 78830 | 9a | 20 to 25°F | 26 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 USW00012947, at 28.4567, -99.2183, elevation 145 m (476 ft).
- Data quality: Representative (10+ years), 20 years of freeze data.
- Average days per year at or below 32°F: 10.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Dilley (25 km)
- Fowlerton (37 km)
- Encinal (56 km)
- Carrizo Springs 3s (64 km)
- Crystal City (65 km)
- Cross (67 km)
- Tilden 4 SSE (68 km)
- Charlotte 5 NNW (70 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.