Frost dates for Flatonia 4se, TX
At Flatonia 4se, the median last spring frost (32°F) is Mar 2 and the median first fall frost is Nov 27, for a typical growing season of 271 days. For a 90% chance that the last frost has passed, wait until Mar 21. Nearby ZIP codes are in USDA hardiness zone 9a.
- Mar 2Last spring frost (median)50% chance of 32°F after this date
- Mar 21Safer planting date10% chance of 32°F after this date
- Nov 27First fall frost (median)50% chance of 32°F by this date
- 271 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 23 | Mar 13 | Apr 2 |
| 32°F | Feb 4 | Mar 2 | Mar 21 |
| 28°F | Jan 16 | Feb 16 | Mar 12 |
| 24°F | Dec 22 | Jan 29 | Mar 3 |
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 31 | Nov 15 | Dec 3 |
| 32°F | Nov 8 | Nov 27 | Dec 18 |
| 28°F | Nov 17 | Dec 9 | Jan 9 |
| 24°F | Nov 29 | Dec 28 | Feb 2 |
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 | 221 days | 247 days | 274 days |
| 32°F | 245 days | 271 days | 305 days |
| 28°F | 266 days | 300 days | 339 days |
| 24°F | 293 days | 334 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 99% |
| 24°F | 84% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 77975 | 9a | 20 to 25°F | 7 km |
| 78941 | 9a | 20 to 25°F | 14 km |
| 78956 | 9a | 20 to 25°F | 14 km |
| 78959 | 9a | 20 to 25°F | 24 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 USC00413183, at 29.6339, -97.0644, elevation 143 m (470 ft).
- Data quality: Representative (10+ years), 23 years of freeze data.
- Average days per year at or below 32°F: 11.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Hallettsville 2 N (22 km)
- La Grange (36 km)
- Yoakum (41 km)
- Gonzales 2s (41 km)
- Smithville (43 km)
- Columbus (48 km)
- Cheapside (49 km)
- Luling (58 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.