Frost dates for Houston Sugarland Mem, TX
At Houston Sugarland Mem, the median last spring frost (32°F) is Feb 2 and the median first fall frost is Dec 11, for a typical growing season of 318 days. For a 90% chance that the last frost has passed, wait until Mar 7. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.
- Feb 2Last spring frost (median)50% chance of 32°F after this date
- Mar 7Safer planting date10% chance of 32°F after this date
- Dec 11First fall frost (median)50% chance of 32°F by this date
- 318 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 25 | Feb 26 | Mar 21 |
| 32°F | Dec 28 | Feb 2 | Mar 7 |
| 28°F | Dec 17 | Jan 18 | Feb 23 |
| 24°F | Dec 20 | Jan 9 | Feb 18 |
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 7 | Nov 27 | Dec 24 |
| 32°F | Nov 20 | Dec 11 | Jan 16 |
| 28°F | Dec 4 | Jan 1 | Feb 2 |
| 24°F | Dec 16 | Jan 7 | 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 | 243 days | 277 days | 314 days |
| 32°F | 276 days | 318 days | 357 days |
| 28°F | 312 days | 356 days | 365 days |
| 24°F | 354 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 94% |
| 28°F | 60% |
| 24°F | 19% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 77498 | 9b | 25 to 30°F | 2 km |
| 77478 | 9b | 25 to 30°F | 5 km |
| 77407 | 9b | 25 to 30°F | 7 km |
| 77083 | 9b | 25 to 30°F | 8 km |
| 77477 | 9b | 25 to 30°F | 9 km |
| 77099 | 9b | 25 to 30°F | 9 km |
| 77072 | 9b | 25 to 30°F | 11 km |
| 77031 | 9b | 25 to 30°F | 11 km |
| 77082 | 9b | 25 to 30°F | 11 km |
| 77071 | 9b | 25 to 30°F | 14 km |
| 77489 | 9b | 25 to 30°F | 14 km |
| 77036 | 9b | 25 to 30°F | 14 km |
| 77077 | 9b | 25 to 30°F | 15 km |
| 77074 | 9b | 25 to 30°F | 15 km |
| 77450 | 9b | 25 to 30°F | 16 km |
| 77042 | 9b | 25 to 30°F | 16 km |
| 77085 | 9b | 25 to 30°F | 17 km |
| 77094 | 9b | 25 to 30°F | 17 km |
| 77079 | 9b | 25 to 30°F | 18 km |
| 77096 | 9b | 25 to 30°F | 18 km |
| 77063 | 9b | 25 to 30°F | 18 km |
| 77035 | 9b | 25 to 30°F | 18 km |
| 77494 | 9a | 20 to 25°F | 21 km |
| 77024 | 9b | 25 to 30°F | 22 km |
| 77043 | 9b | 25 to 30°F | 22 km |
| 77084 | 9b | 25 to 30°F | 23 km |
| 77449 | 9b | 25 to 30°F | 25 km |
| 77493 | 9a | 20 to 25°F | 31 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 USW00012977, at 29.6222, -95.6564, elevation 25 m (82 ft).
- Data quality: Representative (10+ years), 12 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
- Sugar Land (0 km)
- Thompsons 3 WSW (16 km)
- Houston Hobby Airport (36 km)
- Houston-Port (39 km)
- Houston Clover Field (42 km)
- Houston Intercont Airport (49 km)
- Alvin (50 km)
- Sealy (50 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.