Frost dates for Alexandria, LA
At Alexandria, the median last spring frost (32°F) is Feb 27 and the median first fall frost is Nov 27, for a typical growing season of 274 days. For a 90% chance that the last frost has passed, wait until Mar 18. Nearby ZIP codes are in USDA hardiness zone 9a.
- Feb 27Last spring frost (median)50% chance of 32°F after this date
- Mar 18Safer planting date10% chance of 32°F after this date
- Nov 27First fall frost (median)50% chance of 32°F by this date
- 274 daysGrowing season (median)between 32°F freezes
USDA hardiness zone 9a (20 to 25°F) · see all zone 9a frost dates
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 21 | Mar 12 | Apr 2 |
| 32°F | Jan 31 | Feb 27 | Mar 18 |
| 28°F | Jan 6 | Feb 8 | Mar 8 |
| 24°F | Dec 24 | Jan 25 | Feb 26 |
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 31 | Nov 14 | Dec 1 |
| 32°F | Nov 7 | Nov 27 | Dec 19 |
| 28°F | Nov 18 | Dec 13 | Jan 10 |
| 24°F | Dec 1 | Jan 1 | 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 | 220 days | 248 days | 274 days |
| 32°F | 243 days | 274 days | 306 days |
| 28°F | 273 days | 308 days | 348 days |
| 24°F | 309 days | 348 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 96% |
| 24°F | 73% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 71359 | 9a | 20 to 25°F | 3 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 USC00160098, at 31.3206, -92.4611, elevation 26 m (87 ft).
- Data quality: Standard (24+ years of data), 28 years of freeze data.
- Average days per year at or below 32°F: 24.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Alexandria 5 SSE (8 km)
- Alexandria Intl Airport (9 km)
- Lsu Dean Lee Rsch Station (17 km)
- Alexandria Esler Regional Airport (18 km)
- Boyce 3 WNW (26 km)
- Bunkie (48 km)
- Jena (51 km)
- Fort Polk Fullerton Lndg Strip (52 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.