Frost dates for Throckmorton 10n, TX
At Throckmorton 10n, the median last spring frost (32°F) is Mar 29 and the median first fall frost is Nov 7, for a typical growing season of 223 days. For a 90% chance that the last frost has passed, wait until Apr 16. Nearby ZIP codes are in USDA hardiness zone 8a.
- Mar 29Last spring frost (median)50% chance of 32°F after this date
- Apr 16Safer planting date10% chance of 32°F after this date
- Nov 7First fall frost (median)50% chance of 32°F by this date
- 223 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 23 | Apr 8 | Apr 26 |
| 32°F | Mar 9 | Mar 29 | Apr 16 |
| 28°F | Feb 25 | Mar 14 | Apr 3 |
| 24°F | Feb 5 | Mar 2 | Mar 21 |
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 16 | Oct 31 | Nov 13 |
| 32°F | Oct 23 | Nov 7 | Nov 26 |
| 28°F | Oct 31 | Nov 15 | Dec 5 |
| 24°F | Nov 6 | Nov 28 | Dec 21 |
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 | 184 days | 203 days | 225 days |
| 32°F | 200 days | 223 days | 250 days |
| 28°F | 218 days | 246 days | 275 days |
| 24°F | 243 days | 269 days | 303 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 76483 | 8a | 10 to 15°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 USC00419016, at 33.3144, -99.2006, elevation 426 m (1,396 ft).
- Data quality: Representative (10+ years), 19 years of freeze data.
- Average days per year at or below 32°F: 71.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Seymour 3nw (37 km)
- Olney (41 km)
- Munday (42 km)
- Fort Griffin (43 km)
- Lake Kemp (49 km)
- Haskell (53 km)
- Archer City 2w (60 km)
- Graham (63 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.