Frost dates for Houma, LA
At Houma, the median last spring frost (32°F) is Feb 5 and the median first fall frost is Dec 17, for a typical growing season of 312 days. For a 90% chance that the last frost has passed, wait until Mar 7. Nearby ZIP codes are in USDA hardiness zone 9b.
- Feb 5Last spring frost (median)50% chance of 32°F after this date
- Mar 7Safer planting date10% chance of 32°F after this date
- Dec 17First fall frost (median)50% chance of 32°F by this date
- 312 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 25 | Mar 19 |
| 32°F | Jan 6 | Feb 5 | Mar 7 |
| 28°F | Dec 27 | Jan 26 | Feb 24 |
| 24°F | Dec 26 | Jan 18 | Feb 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 | Nov 8 | Nov 28 | Dec 22 |
| 32°F | Nov 23 | Dec 17 | Jan 13 |
| 28°F | Dec 7 | Jan 2 | Feb 1 |
| 24°F | Dec 20 | Jan 7 | 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 | 245 days | 276 days | 311 days |
| 32°F | 277 days | 312 days | 347 days |
| 28°F | 308 days | 343 days | 365 days |
| 24°F | 336 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 96% |
| 28°F | 75% |
| 24°F | 38% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 70359 | 9b | 25 to 30°F | 7 km |
| 70360 | 9b | 25 to 30°F | 7 km |
| 70395 | 9b | 25 to 30°F | 8 km |
| 70352 | 9b | 25 to 30°F | 13 km |
| 70364 | 9b | 25 to 30°F | 13 km |
| 70356 | 9b | 25 to 30°F | 15 km |
| 70363 | 9b | 25 to 30°F | 19 km |
| 70397 | 9b | 25 to 30°F | 28 km |
| 70344 | 9b | 25 to 30°F | 32 km |
| 70353 | 9b | 25 to 30°F | 33 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 USC00164407, at 29.6408, -90.8161, elevation 2 m (8 ft).
- Data quality: Representative (10+ years), 14 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
- Thibodaux 4 SE (13 km)
- Morgan City (35 km)
- Reserve (52 km)
- Donaldsonville 4 SW (52 km)
- Galliano (53 km)
- New Orleans Intl Airport (67 km)
- Carville 2 SW (69 km)
- Salt Point (69 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.