Frost dates for College Station, TX
At College Station, the median last spring frost (32°F) is Feb 27 and the median first fall frost is Nov 30, for a typical growing season of 278 days. For a 90% chance that the last frost has passed, wait until Mar 18. Nearby ZIP codes are in USDA hardiness zone 9a.
- Feb 27Last spring frost (median)50% chance of 32°F after this date
- Mar 18Safer planting date10% chance of 32°F after this date
- Nov 30First fall frost (median)50% chance of 32°F by this date
- 278 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 22 | Mar 11 | Apr 2 |
| 32°F | Jan 31 | Feb 27 | Mar 18 |
| 28°F | Jan 6 | Feb 7 | Mar 9 |
| 24°F | Dec 21 | Jan 23 | Mar 1 |
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 1 | Nov 17 | Dec 5 |
| 32°F | Nov 10 | Nov 30 | Dec 26 |
| 28°F | Nov 23 | Dec 18 | Jan 22 |
| 24°F | Dec 5 | Jan 3 | Feb 12 |
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 | 223 days | 250 days | 280 days |
| 32°F | 247 days | 278 days | 315 days |
| 28°F | 274 days | 316 days | 353 days |
| 24°F | 308 days | 353 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 95% |
| 24°F | 66% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 77843 | 9a | 20 to 25°F | 4 km |
| 77840 | 9a | 20 to 25°F | 5 km |
| 77801 | 9a | 20 to 25°F | 6 km |
| 77802 | 9a | 20 to 25°F | 9 km |
| 77845 | 9a | 20 to 25°F | 9 km |
| 77803 | 9a | 20 to 25°F | 10 km |
| 77878 | 9a | 20 to 25°F | 13 km |
| 77807 | 9a | 20 to 25°F | 15 km |
| 77866 | 9a | 20 to 25°F | 18 km |
| 77808 | 9a | 20 to 25°F | 24 km |
| 77867 | 9a | 20 to 25°F | 26 km |
| 77861 | 9a | 20 to 25°F | 29 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 USW00003904, at 30.5892, -96.3647, elevation 93 m (305 ft).
- Data quality: Standard (24+ years of data), 26 years of freeze data.
- Average days per year at or below 32°F: 16.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Somerville Dam (33 km)
- Washington State Park (35 km)
- Brenham (48 km)
- Franklin (51 km)
- Madisonville (58 km)
- Bellville 6nne (64 km)
- Cameron (65 km)
- Lexington (65 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.