Frost dates for Lexington, TX
At Lexington, the median last spring frost (32°F) is Mar 5 and the median first fall frost is Nov 21, for a typical growing season of 262 days. For a 90% chance that the last frost has passed, wait until Mar 31. Nearby ZIP codes are in USDA hardiness zone 9a.
- Mar 5Last spring frost (median)50% chance of 32°F after this date
- Mar 31Safer planting date10% chance of 32°F after this date
- Nov 21First fall frost (median)50% chance of 32°F by this date
- 262 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 27 | Mar 20 | Apr 11 |
| 32°F | Feb 10 | Mar 5 | Mar 31 |
| 28°F | Jan 17 | Feb 17 | Mar 14 |
| 24°F | Dec 24 | Jan 30 | Mar 4 |
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 27 | Nov 10 | Nov 28 |
| 32°F | Nov 3 | Nov 21 | Dec 11 |
| 28°F | Nov 13 | Dec 3 | Jan 4 |
| 24°F | Nov 25 | Dec 24 | Jan 30 |
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 | 209 days | 236 days | 264 days |
| 32°F | 231 days | 262 days | 294 days |
| 28°F | 260 days | 294 days | 331 days |
| 24°F | 289 days | 331 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 89% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 78947 | 9a | 20 to 25°F | 6 km |
| 78948 | 9a | 20 to 25°F | 10 km |
| 77853 | 9a | 20 to 25°F | 18 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 USC00415193, at 30.4064, -97.0133, elevation 129 m (423 ft).
- Data quality: Standard (24+ years of data), 27 years of freeze data.
- Average days per year at or below 32°F: 27.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Elgin 1 N (35 km)
- Taylor 1nw (43 km)
- Granger Dam (46 km)
- Somerville Dam (46 km)
- Smithville (46 km)
- Cameron (49 km)
- La Grange (56 km)
- Cedar Creek 5 S (62 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.