Frost dates for Hammond 5 E, LA
At Hammond 5 E, the median last spring frost (32°F) is Mar 8 and the median first fall frost is Nov 19, for a typical growing season of 257 days. For a 90% chance that the last frost has passed, wait until Mar 31. Nearby ZIP codes are in USDA hardiness zone 9a.
- Mar 8Last spring frost (median)50% chance of 32°F after this date
- Mar 31Safer planting date10% chance of 32°F after this date
- Nov 19First fall frost (median)50% chance of 32°F by this date
- 257 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 1 | Mar 25 | Apr 16 |
| 32°F | Feb 12 | Mar 8 | Mar 31 |
| 28°F | Jan 20 | Feb 21 | Mar 17 |
| 24°F | Dec 30 | 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 23 | Nov 6 | Nov 26 |
| 32°F | Nov 3 | Nov 19 | Dec 8 |
| 28°F | Nov 14 | Dec 2 | Jan 3 |
| 24°F | Nov 28 | Dec 29 | Jan 31 |
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 | 205 days | 230 days | 259 days |
| 32°F | 227 days | 257 days | 289 days |
| 28°F | 256 days | 288 days | 328 days |
| 24°F | 290 days | 329 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 88% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 70455 | 9a | 20 to 25°F | 6 km |
| 70401 | 9a | 20 to 25°F | 8 km |
| 70402 | 9a | 20 to 25°F | 9 km |
| 70403 | 9a | 20 to 25°F | 11 km |
| 70451 | 9a | 20 to 25°F | 11 km |
| 70466 | 9a | 20 to 25°F | 14 km |
| 70446 | 9a | 20 to 25°F | 15 km |
| 70454 | 9a | 20 to 25°F | 16 km |
| 70711 | 9a | 20 to 25°F | 21 km |
| 70462 | 9a | 20 to 25°F | 24 km |
| 70754 | 9a | 20 to 25°F | 37 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 USC00164030, at 30.5031, -90.3772, elevation 11 m (35 ft).
- Data quality: Representative (10+ years), 21 years of freeze data.
- Average days per year at or below 32°F: 31.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Covington 4 NNW (26 km)
- Amite (27 km)
- Reserve (53 km)
- Slidell Airport (56 km)
- New Orleans Intl Airport (58 km)
- Bogalusa (59 km)
- New Orleans Lakefront Airport (61 km)
- Slidell (64 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.