Frost dates for Lampasas, TX
At Lampasas, the median last spring frost (32°F) is Mar 22 and the median first fall frost is Nov 12, for a typical growing season of 238 days. For a 90% chance that the last frost has passed, wait until Apr 10. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 22Last spring frost (median)50% chance of 32°F after this date
- Apr 10Safer planting date10% chance of 32°F after this date
- Nov 12First fall frost (median)50% chance of 32°F by this date
- 238 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 13 | Apr 3 | Apr 21 |
| 32°F | Mar 2 | Mar 22 | Apr 10 |
| 28°F | Feb 11 | Mar 6 | Mar 31 |
| 24°F | Jan 19 | Feb 20 | Mar 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 | Oct 21 | Nov 3 | Nov 20 |
| 32°F | Oct 29 | Nov 12 | Dec 2 |
| 28°F | Nov 5 | Nov 26 | Dec 17 |
| 24°F | Nov 15 | Dec 8 | Jan 7 |
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 | 190 days | 214 days | 238 days |
| 32°F | 211 days | 238 days | 265 days |
| 28°F | 234 days | 264 days | 297 days |
| 24°F | 260 days | 296 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 |
|---|---|---|---|
| 76550 | 8b | 15 to 20°F | 8 km |
| 76539 | 8b | 15 to 20°F | 18 km |
| 76522 | 8b | 15 to 20°F | 26 km |
| 76853 | 8b | 15 to 20°F | 28 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 USC00415018, at 31.0717, -98.1847, elevation 315 m (1,032 ft).
- Data quality: Representative (10+ years), 18 years of freeze data.
- Average days per year at or below 32°F: 55.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Burnet (35 km)
- Burnet Muni Airport (37 km)
- Evant 1ssw (44 km)
- Killeen (47 km)
- Austin 33 NW (51 km)
- Goldthwaite 1 WSW (56 km)
- Llano (58 km)
- San Saba 7nw (60 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.