Frost dates for St. Francisville 1 NE, LA
At St. Francisville 1 NE, the median last spring frost (32°F) is Mar 2 and the median first fall frost is Nov 24, for a typical growing season of 268 days. For a 90% chance that the last frost has passed, wait until Mar 29. Nearby ZIP codes are in USDA hardiness zone 9a.
- Mar 2Last spring frost (median)50% chance of 32°F after this date
- Mar 29Safer planting date10% chance of 32°F after this date
- Nov 24First fall frost (median)50% chance of 32°F by this date
- 268 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 25 | Mar 24 | Apr 13 |
| 32°F | Jan 31 | Mar 2 | Mar 29 |
| 28°F | Jan 16 | Feb 7 | Mar 14 |
| 24°F | Dec 30 | Jan 26 | Feb 28 |
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 30 | Nov 12 | Dec 1 |
| 32°F | Nov 5 | Nov 24 | Dec 16 |
| 28°F | Nov 16 | Dec 10 | Jan 7 |
| 24°F | Dec 1 | Jan 1 | Jan 23 |
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 | 206 days | 236 days | 270 days |
| 32°F | 235 days | 268 days | 304 days |
| 28°F | 264 days | 302 days | 337 days |
| 24°F | 300 days | 339 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 99% |
| 24°F | 84% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 70775 | 9a | 20 to 25°F | 8 km |
| 70748 | 9a | 20 to 25°F | 16 km |
| 70787 | 9a | 20 to 25°F | 21 km |
| 70782 | 9a | 20 to 25°F | 23 km |
| 70715 | 9a | 20 to 25°F | 28 km |
| 70712 | 9a | 20 to 25°F | 30 km |
| 70747 | 9a | 20 to 25°F | 31 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 USC00168138, at 30.7872, -91.3675, elevation 39 m (129 ft).
- Data quality: Estimated from nearby stations (2+ years), 2 years of freeze data.
- Average days per year at or below 32°F: 28.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- New Roads 5 NE (7 km)
- Baton Rouge Ryan Airport (35 km)
- Clinton 5 SE (38 km)
- Brusly 2 W (45 km)
- Lsu Ben-Hur Farm (51 km)
- Carville 2 SW (69 km)
- Grand Coteau (77 km)
- Bunkie (80 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.