Frost dates for Galliano, LA
At Galliano, the median last spring frost (32°F) is Feb 8 and the median first fall frost is Dec 19, for a typical growing season of 311 days. For a 90% chance that the last frost has passed, wait until Mar 12. Nearby ZIP codes are in USDA hardiness zones 9b to 10a.
- Feb 8Last spring frost (median)50% chance of 32°F after this date
- Mar 12Safer planting date10% chance of 32°F after this date
- Dec 19First fall frost (median)50% chance of 32°F by this date
- 311 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 | Jan 29 | Feb 28 | Mar 21 |
| 32°F | Jan 11 | Feb 8 | Mar 12 |
| 28°F | Dec 27 | Jan 28 | Mar 1 |
| 24°F | Dec 23 | Jan 20 | Feb 22 |
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 12 | Dec 1 | Dec 29 |
| 32°F | Nov 20 | Dec 19 | Jan 22 |
| 28°F | Dec 3 | Jan 3 | Feb 4 |
| 24°F | Dec 13 | Jan 8 | Feb 10 |
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 | 247 days | 279 days | 312 days |
| 32°F | 273 days | 311 days | 350 days |
| 28°F | 302 days | 343 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 | 95% |
| 28°F | 74% |
| 24°F | 38% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 70354 | 9b | 25 to 30°F | 5 km |
| 70345 | 9b | 25 to 30°F | 8 km |
| 70373 | 9b | 25 to 30°F | 15 km |
| 70377 | 9b | 25 to 30°F | 22 km |
| 70374 | 9b | 25 to 30°F | 25 km |
| 70357 | 10a | 30 to 35°F | 25 km |
| 70343 | 9b | 25 to 30°F | 26 km |
| 70355 | 9b | 25 to 30°F | 28 km |
| 70358 | 10a | 30 to 35°F | 39 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 USC00163433, at 29.4631, -90.3072, elevation 2 m (5 ft).
- Data quality: Standard (24+ years of data), 26 years of freeze data.
- Average days per year at or below 32°F: 9.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Marrero 9 SSW (40 km)
- New Orleans Alvin Callender Fl (48 km)
- Lsu Citrus Rsch Station (49 km)
- Houma (53 km)
- New Orleans Audubon (53 km)
- Thibodaux 4 SE (56 km)
- Terrytown 3s (56 km)
- New Orleans Intl Airport (59 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.