Frost dates for Poplarville Exp. Station, MS
At Poplarville Exp. Station, the median last spring frost (32°F) is Mar 10 and the median first fall frost is Nov 21, for a typical growing season of 257 days. For a 90% chance that the last frost has passed, wait until Apr 1. Nearby ZIP codes are in USDA hardiness zones 8b to 9a.
- Mar 10Last spring frost (median)50% chance of 32°F after this date
- Apr 1Safer planting date10% chance of 32°F after this date
- Nov 21First fall frost (median)50% chance of 32°F by this date
- 257 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 2 | Mar 25 | Apr 17 |
| 32°F | Feb 16 | Mar 10 | Apr 1 |
| 28°F | Jan 27 | Feb 24 | Mar 16 |
| 24°F | Jan 4 | Feb 2 | 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 25 | Nov 8 | Nov 26 |
| 32°F | Nov 2 | Nov 21 | Dec 12 |
| 28°F | Nov 10 | Dec 3 | Jan 3 |
| 24°F | Nov 26 | Dec 26 | Jan 20 |
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 | 205 days | 230 days | 257 days |
| 32°F | 227 days | 257 days | 287 days |
| 28°F | 253 days | 285 days | 320 days |
| 24°F | 283 days | 320 days | 362 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 93% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 39470 | 9a | 20 to 25°F | 3 km |
| 39455 | 8b | 15 to 20°F | 20 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 USC00227128, at 30.8408, -89.5453, elevation 95 m (313 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 26.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Picayune (37 km)
- Wiggins (41 km)
- Hattiesburg 5sw (50 km)
- Bay St. Louis Nasa (52 km)
- Saucier Exp. Forest (53 km)
- Columbia (53 km)
- Tylertown 5ese (56 km)
- Hattiesburg Chain Muni Airport (56 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.