Frost dates for Leland Bowman Lock, LA
At Leland Bowman Lock, the median last spring frost (32°F) is Feb 17 and the median first fall frost is Dec 5, for a typical growing season of 298 days. For a 90% chance that the last frost has passed, wait until Mar 13. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.
- Feb 17Last spring frost (median)50% chance of 32°F after this date
- Mar 13Safer planting date10% chance of 32°F after this date
- Dec 5First fall frost (median)50% chance of 32°F by this date
- 298 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 9 | Mar 5 | Mar 29 |
| 32°F | Jan 19 | Feb 17 | Mar 13 |
| 28°F | Dec 30 | Jan 29 | Feb 28 |
| 24°F | Dec 21 | Jan 17 | Feb 9 |
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 | Nov 2 | Nov 21 | Dec 12 |
| 32°F | Nov 13 | Dec 5 | Jan 4 |
| 28°F | Nov 27 | Dec 25 | Jan 25 |
| 24°F | Dec 9 | Jan 2 | Feb 1 |
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 | 231 days | 263 days | 294 days |
| 32°F | 258 days | 298 days | 334 days |
| 28°F | 292 days | 331 days | 365 days |
| 24°F | 327 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 99% |
| 28°F | 89% |
| 24°F | 57% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 70510 | 9a | 20 to 25°F | 12 km |
| 70575 | 9a | 20 to 25°F | 19 km |
| 70548 | 9b | 25 to 30°F | 21 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 USC00165296, at 29.7856, -92.2047, elevation 12 m (40 ft).
- Data quality: Standard (24+ years of data), 26 years of freeze data.
- Average days per year at or below 32°F: 10.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- New Iberia Acadiana Airport (42 km)
- New Iberia Acadiana Regional Airport (42 km)
- St. Martinville 3 SW (46 km)
- Lafayette 13 SE (47 km)
- Lafayette (50 km)
- Lafayette Regional Airport (51 km)
- Jeanerette 5 NW (51 km)
- Crowley 2 NE (52 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.