Frost dates for Ruston La Tech, LA
At Ruston La Tech, the median last spring frost (32°F) is Mar 11 and the median first fall frost is Nov 16, for a typical growing season of 248 days. For a 90% chance that the last frost has passed, wait until Mar 31. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 11Last spring frost (median)50% chance of 32°F after this date
- Mar 31Safer planting date10% chance of 32°F after this date
- Nov 16First fall frost (median)50% chance of 32°F by this date
- 248 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 6 | Mar 27 | Apr 14 |
| 32°F | Feb 18 | Mar 11 | Mar 31 |
| 28°F | Jan 29 | Feb 24 | Mar 17 |
| 24°F | Jan 7 | Feb 1 | Mar 6 |
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 4 | Nov 21 |
| 32°F | Oct 31 | Nov 16 | Dec 4 |
| 28°F | Nov 10 | Dec 1 | Dec 26 |
| 24°F | Nov 22 | Dec 22 | Jan 16 |
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 | 196 days | 221 days | 247 days |
| 32°F | 221 days | 248 days | 276 days |
| 28°F | 249 days | 280 days | 314 days |
| 24°F | 279 days | 316 days | 352 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 96% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 71272 | 8b | 15 to 20°F | 2 km |
| 71270 | 8b | 15 to 20°F | 2 km |
| 71245 | 8b | 15 to 20°F | 6 km |
| 71275 | 8b | 15 to 20°F | 16 km |
| 71235 | 8b | 15 to 20°F | 20 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 USC00168067, at 32.5100, -92.6503, elevation 90 m (295 ft).
- Data quality: Representative (10+ years), 22 years of freeze data.
- Average days per year at or below 32°F: 46.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Calhoun Rsch Station (28 km)
- Bienville 3 NE (31 km)
- Farmerville (37 km)
- Homer 1n (51 km)
- Monroe Regional Airport (57 km)
- Monroe Delta Cc (58 km)
- Winnfield 3 N (61 km)
- Ashland (61 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.