Frost dates for Biloxi, MS
At Biloxi, the median last spring frost (32°F) is Feb 12 and the median first fall frost is Dec 14, for a typical growing season of 301 days. For a 90% chance that the last frost has passed, wait until Mar 11. Nearby ZIP codes are in USDA hardiness zone 9a.
- Feb 12Last 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
- 301 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 6 | Mar 1 | Mar 20 |
| 32°F | Jan 18 | Feb 12 | Mar 11 |
| 28°F | Jan 2 | Jan 27 | Feb 28 |
| 24°F | Dec 31 | Jan 19 | Feb 14 |
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 6 | Nov 26 | Dec 23 |
| 32°F | Nov 16 | Dec 14 | Jan 11 |
| 28°F | Dec 2 | Jan 2 | Jan 27 |
| 24°F | Dec 24 | Jan 10 | 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 | 242 days | 270 days | 302 days |
| 32°F | 265 days | 301 days | 336 days |
| 28°F | 296 days | 335 days | 365 days |
| 24°F | 328 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 99% |
| 28°F | 87% |
| 24°F | 50% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 39507 | 9a | 20 to 25°F | 3 km |
| 39531 | 9a | 20 to 25°F | 4 km |
| 39534 | 9a | 20 to 25°F | 8 km |
| 39530 | 9a | 20 to 25°F | 11 km |
| 39540 | 9a | 20 to 25°F | 11 km |
| 39532 | 9a | 20 to 25°F | 12 km |
| 39564 | 9a | 20 to 25°F | 22 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 USC00220792, at 30.3931, -89.0008, elevation 3 m (10 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 11.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Gulfport - Biloxi Airport (8 km)
- Gulfport Naval Center (12 km)
- Saucier Exp. Forest (26 km)
- Waveland (38 km)
- Pascagoula Lott Intl Airport (46 km)
- Pascagoula 3 NE (50 km)
- Wiggins (54 km)
- Bay St. Louis Nasa (57 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.