Frost dates for Hattiesburg Chain Muni Airport, MS
At Hattiesburg Chain Muni Airport, the median last spring frost (32°F) is Mar 8 and the median first fall frost is Nov 15, for a typical growing season of 252 days. For a 90% chance that the last frost has passed, wait until Mar 28. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 8Last spring frost (median)50% chance of 32°F after this date
- Mar 28Safer planting date10% chance of 32°F after this date
- Nov 15First fall frost (median)50% chance of 32°F by this date
- 252 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 3 | Mar 24 | Apr 13 |
| 32°F | Feb 16 | Mar 8 | Mar 28 |
| 28°F | Jan 26 | Feb 22 | Mar 15 |
| 24°F | Jan 2 | Feb 2 | Mar 3 |
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 23 | Nov 4 | Nov 19 |
| 32°F | Nov 1 | Nov 15 | Dec 4 |
| 28°F | Nov 10 | Nov 30 | Jan 4 |
| 24°F | Nov 26 | Dec 28 | Jan 27 |
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 | 201 days | 226 days | 251 days |
| 32°F | 225 days | 252 days | 283 days |
| 28°F | 252 days | 285 days | 318 days |
| 24°F | 281 days | 321 days | 358 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 91% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 39401 | 8b | 15 to 20°F | 5 km |
| 39465 | 8b | 15 to 20°F | 9 km |
| 39459 | 8b | 15 to 20°F | 24 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 USW00013833, at 31.2819, -89.2531, elevation 46 m (151 ft).
- Data quality: Representative (10+ years), 21 years of freeze data.
- Average days per year at or below 32°F: 34.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Hattiesburg 5sw (9 km)
- Beaumont Expstation (32 km)
- Laurel (45 km)
- Wiggins (47 km)
- Collins (49 km)
- Columbia (56 km)
- Poplarville Exp. Station (56 km)
- Waynesboro 2 W (71 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.