Frost dates for St. Joseph 3 N, LA
At St. Joseph 3 N, the median last spring frost (32°F) is Mar 13 and the median first fall frost is Nov 10, for a typical growing season of 242 days. For a 90% chance that the last frost has passed, wait until Apr 4. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 13Last spring frost (median)50% chance of 32°F after this date
- Apr 4Safer planting date10% chance of 32°F after this date
- Nov 10First fall frost (median)50% chance of 32°F by this date
- 242 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 6 | Mar 29 | Apr 16 |
| 32°F | Feb 20 | Mar 13 | Apr 4 |
| 28°F | Jan 30 | Feb 27 | Mar 19 |
| 24°F | Jan 5 | Feb 7 | 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 18 | Nov 1 | Nov 16 |
| 32°F | Oct 27 | Nov 10 | Dec 1 |
| 28°F | Nov 3 | Nov 22 | Dec 19 |
| 24°F | Nov 12 | Dec 10 | Jan 14 |
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 | 193 days | 217 days | 240 days |
| 32°F | 216 days | 242 days | 270 days |
| 28°F | 240 days | 271 days | 306 days |
| 24°F | 271 days | 309 days | 346 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 97% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 71366 | 8b | 15 to 20°F | 11 km |
| 39096 | 8b | 15 to 20°F | 18 km |
| 71357 | 8b | 15 to 20°F | 20 km |
| 71375 | 8b | 15 to 20°F | 25 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 USC00168163, at 31.9497, -91.2336, elevation 24 m (78 ft).
- Data quality: Standard (24+ years of data), 25 years of freeze data.
- Average days per year at or below 32°F: 33.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Winnsboro 5 SSE (47 km)
- Tallulah Vicksburg Airport (49 km)
- Winnsboro 2 SE (50 km)
- Tallulah (50 km)
- Rayville (77 km)
- Jonesville Locks (79 km)
- Columbia Lock (86 km)
- Jena (90 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.