Frost dates for Bruni, TX
At Bruni, the median last spring frost (32°F) is Jan 30 and the median first fall frost is Dec 18, for a typical growing season of 323 days. For a 90% chance that the last frost has passed, wait until Mar 1. Nearby ZIP codes are in USDA hardiness zone 9b.
- Jan 30Last spring frost (median)50% chance of 32°F after this date
- Mar 1Safer planting date10% chance of 32°F after this date
- Dec 18First fall frost (median)50% chance of 32°F by this date
- 323 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 | Jan 21 | Feb 19 | Mar 13 |
| 32°F | Dec 25 | Jan 30 | Mar 1 |
| 28°F | Dec 5 | Jan 11 | Feb 17 |
| 24°F | Dec 16 | Jan 9 | 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 11 | Nov 30 | Dec 30 |
| 32°F | Nov 22 | Dec 18 | Jan 25 |
| 28°F | Dec 1 | Jan 1 | Feb 6 |
| 24°F | Dec 11 | Jan 6 | Feb 9 |
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 | 254 days | 289 days | 326 days |
| 32°F | 283 days | 323 days | 365 days |
| 28°F | 321 days | 365 days | 365 days |
| 24°F | 360 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 90% |
| 28°F | 52% |
| 24°F | 12% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 78344 | 9b | 25 to 30°F | 14 km |
| 78369 | 9b | 25 to 30°F | 25 km |
| 78371 | 9b | 25 to 30°F | 25 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 USC00411148, at 27.4392, -98.8358, elevation 235 m (771 ft).
- Data quality: Estimated from nearby stations (2+ years), 7 years of freeze data.
- Average days per year at or below 32°F: 5.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Hebbronville (21 km)
- Benavides 2 (45 km)
- Freer (53 km)
- Laredo AFB (63 km)
- Laredo 2 (67 km)
- Zapata 1 S (76 km)
- Falfurrias (78 km)
- Encinal (81 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.