Frost dates for Angleton Brazoria Airport, TX
At Angleton Brazoria Airport, the median last spring frost (32°F) is Feb 13 and the median first fall frost is Dec 8, for a typical growing season of 301 days. For a 90% chance that the last frost has passed, wait until Mar 17. Nearby ZIP codes are in USDA hardiness zone 9b.
- Feb 13Last spring frost (median)50% chance of 32°F after this date
- Mar 17Safer planting date10% chance of 32°F after this date
- Dec 8First fall frost (median)50% chance of 32°F by this date
- 301 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 31 | Mar 2 | Mar 31 |
| 32°F | Jan 10 | Feb 13 | Mar 17 |
| 28°F | Dec 23 | Jan 26 | Mar 3 |
| 24°F | Dec 16 | Jan 12 | Feb 19 |
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 25 | Dec 16 |
| 32°F | Nov 18 | Dec 8 | Jan 12 |
| 28°F | Dec 3 | Jan 1 | Feb 5 |
| 24°F | Dec 14 | 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 | 232 days | 266 days | 302 days |
| 32°F | 262 days | 301 days | 341 days |
| 28°F | 296 days | 340 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 | 98% |
| 28°F | 78% |
| 24°F | 36% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 77566 | 9b | 25 to 30°F | 6 km |
| 77422 | 9b | 25 to 30°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 USW00012976, at 29.1097, -95.4619, elevation 8 m (25 ft).
- Data quality: Representative (10+ years), 22 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
- Angleton 2 W (5 km)
- Freeport 2 NW (16 km)
- Alvin (36 km)
- Thompsons 3 WSW (45 km)
- Houston Clover Field (50 km)
- Bay City Wtr Wks (52 km)
- Houston NWSO (54 km)
- Sugar Land (60 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.