Frost dates for Marrero 9 SSW, LA
At Marrero 9 SSW, the median last spring frost (32°F) is Feb 10 and the median first fall frost is Dec 12, for a typical growing season of 306 days. For a 90% chance that the last frost has passed, wait until Mar 10. Nearby ZIP codes are in USDA hardiness zone 9b.
- Feb 10Last spring frost (median)50% chance of 32°F after this date
- Mar 10Safer planting date10% chance of 32°F after this date
- Dec 12First fall frost (median)50% chance of 32°F by this date
- 306 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 5 | Mar 1 | Mar 21 |
| 32°F | Jan 9 | Feb 10 | Mar 10 |
| 28°F | Dec 29 | Jan 27 | Feb 28 |
| 24°F | Dec 24 | Jan 17 | Feb 8 |
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 9 | Nov 26 | Dec 23 |
| 32°F | Nov 20 | Dec 12 | Jan 12 |
| 28°F | Dec 3 | Jan 1 | Feb 1 |
| 24°F | Dec 13 | Jan 4 | 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 | 244 days | 272 days | 305 days |
| 32°F | 271 days | 306 days | 342 days |
| 28°F | 303 days | 340 days | 365 days |
| 24°F | 334 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 97% |
| 28°F | 76% |
| 24°F | 42% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 70072 | 9b | 25 to 30°F | 3 km |
| 70067 | 9b | 25 to 30°F | 8 km |
| 70037 | 9b | 25 to 30°F | 11 km |
| 70036 | 9b | 25 to 30°F | 11 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 USC00165926, at 29.7853, -90.1158, elevation 1 m (3 ft).
- Data quality: Representative (10+ years), 22 years of freeze data.
- Average days per year at or below 32°F: 11.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- New Orleans Alvin Callender Fl (10 km)
- New Orleans Audubon (15 km)
- Terrytown 3s (16 km)
- Chalmette (22 km)
- New Orleans Intl Airport (27 km)
- St. Bernard (29 km)
- New Orleans Lakefront Airport (31 km)
- Lsu Citrus Rsch Station (36 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.