Frost dates for Anahuac, TX
At Anahuac, the median last spring frost (32°F) is Feb 12 and the median first fall frost is Dec 6, for a typical growing season of 302 days. For a 90% chance that the last frost has passed, wait until Mar 10. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.
- Feb 12Last spring frost (median)50% chance of 32°F after this date
- Mar 10Safer planting date10% chance of 32°F after this date
- Dec 6First fall frost (median)50% chance of 32°F by this date
- 302 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 3 | Feb 28 | Mar 22 |
| 32°F | Jan 10 | Feb 12 | Mar 10 |
| 28°F | Dec 19 | Jan 25 | Feb 27 |
| 24°F | Dec 18 | Jan 18 | Feb 15 |
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 24 | Dec 13 |
| 32°F | Nov 16 | Dec 6 | Jan 7 |
| 28°F | Nov 29 | Dec 31 | Feb 1 |
| 24°F | Dec 9 | Jan 10 | Feb 8 |
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 | 237 days | 269 days | 303 days |
| 32°F | 265 days | 302 days | 338 days |
| 28°F | 301 days | 341 days | 365 days |
| 24°F | 338 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 98% |
| 28°F | 77% |
| 24°F | 31% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 77597 | 9b | 25 to 30°F | 8 km |
| 77560 | 9b | 25 to 30°F | 10 km |
| 77514 | 9b | 25 to 30°F | 11 km |
| 77665 | 9b | 25 to 30°F | 22 km |
| 77538 | 9a | 20 to 25°F | 23 km |
| 77661 | 9b | 25 to 30°F | 26 km |
| 77617 | 9b | 25 to 30°F | 33 km |
| 77623 | 9b | 25 to 30°F | 33 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 USC00410235, at 29.7878, -94.6342, elevation 7 m (24 ft).
- Data quality: Representative (10+ years), 24 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
- Liberty (34 km)
- Baytown (37 km)
- Beaumont Rsch Center (45 km)
- Houston NWSO (56 km)
- Galveston (57 km)
- Galveston Scholes Field (61 km)
- Port Arthur SE Tx Airport (62 km)
- Beaumont City (62 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.