Frost dates for Hallettsville 2 N, TX
At Hallettsville 2 N, the median last spring frost (32°F) is Feb 17 and the median first fall frost is Dec 4, for a typical growing season of 297 days. For a 90% chance that the last frost has passed, wait until Mar 13. Nearby ZIP codes are in USDA hardiness zone 9a.
- Feb 17Last spring frost (median)50% chance of 32°F after this date
- Mar 13Safer planting date10% chance of 32°F after this date
- Dec 4First fall frost (median)50% chance of 32°F by this date
- 297 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 9 | Mar 5 | Mar 29 |
| 32°F | Jan 19 | Feb 17 | Mar 13 |
| 28°F | Dec 24 | Jan 30 | Feb 28 |
| 24°F | Dec 14 | Jan 17 | Feb 16 |
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 4 | Nov 23 | Dec 12 |
| 32°F | Nov 14 | Dec 4 | Jan 8 |
| 28°F | Nov 28 | Dec 27 | Feb 3 |
| 24°F | Dec 7 | Jan 4 | Feb 6 |
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 | 234 days | 263 days | 295 days |
| 32°F | 262 days | 297 days | 332 days |
| 28°F | 293 days | 331 days | 365 days |
| 24°F | 326 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 86% |
| 24°F | 44% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 77964 | 9a | 20 to 25°F | 14 km |
| 78951 | 9a | 20 to 25°F | 19 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 USC00413873, at 29.4706, -96.9397, elevation 84 m (275 ft).
- Data quality: Standard (24+ years of data), 27 years of freeze data.
- Average days per year at or below 32°F: 13.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Flatonia 4se (22 km)
- Yoakum (30 km)
- Columbus (44 km)
- Cheapside (49 km)
- Gonzales 2s (49 km)
- La Grange (50 km)
- Cuero (58 km)
- Eagle Lake Resch Center (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.