Frost dates for Cooper Dam, TX
At Cooper Dam, the median last spring frost (32°F) is Mar 18 and the median first fall frost is Nov 13, for a typical growing season of 241 days. For a 90% chance that the last frost has passed, wait until Apr 1. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 18Last spring frost (median)50% chance of 32°F after this date
- Apr 1Safer planting date10% chance of 32°F after this date
- Nov 13First fall frost (median)50% chance of 32°F by this date
- 241 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 | Mar 14 | Mar 30 | Apr 16 |
| 32°F | Mar 1 | Mar 18 | Apr 1 |
| 28°F | Feb 13 | Mar 6 | Mar 23 |
| 24°F | Jan 22 | Feb 23 | Mar 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 | Oct 22 | Nov 4 | Nov 20 |
| 32°F | Oct 30 | Nov 13 | Dec 1 |
| 28°F | Nov 6 | Nov 26 | Dec 20 |
| 24°F | Nov 17 | Dec 12 | Jan 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 | 197 days | 220 days | 242 days |
| 32°F | 218 days | 241 days | 266 days |
| 28°F | 239 days | 266 days | 300 days |
| 24°F | 261 days | 298 days | 334 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 99% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 75432 | 8b | 15 to 20°F | 10 km |
| 75441 | 8b | 15 to 20°F | 13 km |
| 75437 | 8b | 15 to 20°F | 15 km |
| 75450 | 8b | 15 to 20°F | 16 km |
| 75448 | 8b | 15 to 20°F | 17 km |
| 75415 | 8b | 15 to 20°F | 19 km |
| 75469 | 8b | 15 to 20°F | 22 km |
| 75434 | 8b | 15 to 20°F | 26 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 USC00411968, at 33.3192, -95.6039, elevation 141 m (463 ft).
- Data quality: Representative (10+ years), 11 years of freeze data.
- Average days per year at or below 32°F: 45.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Sulphur Springs (19 km)
- Mount Vernon (38 km)
- Paris (40 km)
- Greenville Kgvl Radio (49 km)
- Emory (52 km)
- Lake Fk Rsvr (56 km)
- Mount Pleasant (58 km)
- Lake Tawakoni (58 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.