Frost dates for Gulfport Naval Center, MS
At Gulfport Naval Center, the median last spring frost (32°F) is Feb 18 and the median first fall frost is Dec 14, for a typical growing season of 300 days. For a 90% chance that the last frost has passed, wait until Mar 14. Nearby ZIP codes are in USDA hardiness zone 9a.
- Feb 18Last spring frost (median)50% chance of 32°F after this date
- Mar 14Safer planting date10% chance of 32°F after this date
- Dec 14First fall frost (median)50% chance of 32°F by this date
- 300 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 7 | Mar 5 | Mar 26 |
| 32°F | Jan 17 | Feb 18 | Mar 14 |
| 28°F | Dec 31 | Jan 31 | Mar 2 |
| 24°F | Dec 30 | Jan 22 | Feb 25 |
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 22 |
| 32°F | Nov 18 | Dec 14 | Jan 13 |
| 28°F | Dec 3 | Jan 2 | Feb 4 |
| 24°F | Dec 20 | Jan 11 | Feb 10 |
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 | 238 days | 267 days | 298 days |
| 32°F | 263 days | 300 days | 338 days |
| 28°F | 298 days | 335 days | 365 days |
| 24°F | 327 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 99% |
| 28°F | 84% |
| 24°F | 46% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 39501 | 9a | 20 to 25°F | 3 km |
| 39560 | 9a | 20 to 25°F | 5 km |
| 39571 | 9a | 20 to 25°F | 15 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 USC00223671, at 30.3772, -89.1228, elevation 11 m (35 ft).
- Data quality: Representative (10+ years), 17 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
- Gulfport - Biloxi Airport (6 km)
- Biloxi (12 km)
- Waveland (27 km)
- Saucier Exp. Forest (28 km)
- Bay St. Louis Nasa (46 km)
- Wiggins (55 km)
- Pascagoula Lott Intl Airport (57 km)
- Picayune (59 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.