Frost dates for Reserve, LA
At Reserve, the median last spring frost (32°F) is Feb 9 and the median first fall frost is Dec 14, for a typical growing season of 308 days. For a 90% chance that the last frost has passed, wait until Mar 11. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.
- Feb 9Last spring frost (median)50% chance of 32°F after this date
- Mar 11Safer planting date10% chance of 32°F after this date
- Dec 14First fall frost (median)50% chance of 32°F by this date
- 308 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 1 | Feb 27 | Mar 22 |
| 32°F | Jan 13 | Feb 9 | Mar 11 |
| 28°F | Dec 28 | Jan 28 | Feb 26 |
| 24°F | Dec 26 | Jan 19 | 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 8 | Nov 28 | Dec 22 |
| 32°F | Nov 21 | Dec 14 | Jan 13 |
| 28°F | Dec 2 | Jan 1 | Feb 1 |
| 24°F | Dec 19 | Jan 9 | Feb 4 |
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 | 275 days | 307 days |
| 32°F | 272 days | 308 days | 345 days |
| 28°F | 304 days | 342 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 | 79% |
| 24°F | 41% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 70084 | 9b | 25 to 30°F | 2 km |
| 70049 | 9b | 25 to 30°F | 3 km |
| 70051 | 9a | 20 to 25°F | 6 km |
| 70076 | 9a | 20 to 25°F | 7 km |
| 70052 | 9a | 20 to 25°F | 10 km |
| 70071 | 9a | 20 to 25°F | 12 km |
| 70763 | 9a | 20 to 25°F | 15 km |
| 70090 | 9b | 25 to 30°F | 15 km |
| 70057 | 9b | 25 to 30°F | 15 km |
| 70068 | 9b | 25 to 30°F | 18 km |
| 70743 | 9a | 20 to 25°F | 19 km |
| 70774 | 9a | 20 to 25°F | 25 km |
| 70449 | 9a | 20 to 25°F | 26 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 USC00167767, at 30.0564, -90.5803, elevation 5 m (15 ft).
- Data quality: Representative (10+ years), 15 years of freeze data.
- Average days per year at or below 32°F: 13.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- New Orleans Intl Airport (32 km)
- Thibodaux 4 SE (38 km)
- Donaldsonville 4 SW (43 km)
- New Orleans Audubon (46 km)
- Houma (52 km)
- New Orleans Lakefront Airport (53 km)
- Hammond 5 E (53 km)
- Marrero 9 SSW (54 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.