Frost dates · USDA zone 8b
Frost dates for Hattiesburg, MS
Hattiesburg, MS sees its last 32 °F night of spring around March 7 and its first of fall around November 23 — a 261-day freeze-free season in a typical year.
Pick a sauce; the Plan Builder runs this station's dates and hands back the calendar, plant count and gear list.
Freeze odds, by date
| Odds | Last spring freeze after | First fall freeze before |
|---|---|---|
| 9 years in 10 | Feb 14 | Dec 14 |
| Median — 1 year in 2 | Mar 7 | Nov 23 |
| 1 year in 10 | Mar 26 | Nov 5 |
The top row is the risky edge: in 9 years of 10 a spring freeze still comes after it, so tender transplants set out then need cover. The bottom row is the cautious date — only 1 year in 10 freezes after it — and the one to plan uncovered tender transplants against. Freeze-free season: 261 days median, at least 234 in 9 years of 10, at least 290 days in 1 year of 10. NOAA ranks season length year by year, so it is not the gap between two rows above. A hard freeze (28 °F) has a median last date of Feb 20 and first of Dec 4.
Hattiesburg planting calendar, 2027
Every row runs from the median last frost (Mar 7) and median first frost (Nov 23) above, using each cultivar's days to maturity. Same engine as the Plan Builder.
| Crop | Start indoors | Transplant / plant | First harvest | Days |
|---|---|---|---|---|
| Hardneck GarlicSiberian (porcelain hardneck) | — | Oct 15prior fall | Jun 12 | 240 from sow |
| Spanish OnionYellow Sweet Spanish (long-day) | Dec 13 | Feb 7 | May 28 | 110 from transplant |
| Mustard greensGarnet Giant (Brassica juncea) | Direct sow | Mar 7 | Apr 6 | 30 from sow |
| CilantroSlow Bolt (Coriandrum sativum) | Feb 21 | Feb 21 | Apr 7 | 45 from sow |
| Genovese BasilGenovese | Feb 7 | Mar 21 | May 20 | 60 from transplant |
| CayenneLong Slim Cayenne (Capsicum annuum) | Jan 10 | Mar 14 | May 28 | 75 from transplant |
| HabaneroOrange Habanero (Capsicum chinense) | Dec 27 | Mar 21 | Jun 24 | 95 from transplant |
| JalapeñoEarly Jalapeño (Capsicum annuum) | Jan 10 | Mar 14 | May 28 | 75 from transplant |
| Marconi Red PepperMarconi Red (Capsicum annuum) | Jan 10 | Mar 14 | Jun 2 | 80 from transplant |
| SerranoSerrano Tampiqueño (Capsicum annuum) | Jan 10 | Mar 14 | Jun 2 | 80 from transplant |
| Nantes CarrotScarlet Nantes | Feb 21 | Feb 21 | May 2 | 70 from sow |
| TomatilloToma Verde | Jan 24 | Mar 14 | May 23 | 70 from transplant |
| Roma TomatoRoma VF (determinate paste) | Jan 24 | Mar 14 | May 28 | 75 from transplant |
| San Marzano TomatoSan Marzano (indeterminate paste) | Jan 24 | Mar 14 | Jun 2 | 80 from transplant |
Tight means first harvest lands within two weeks of the median first fall frost: start that crop indoors on time or cover it in fall.
What sauce can Hattiesburg grow?
Each sauce, scheduled for a Hattiesburg container garden: when the first seeds go in and when enough fruit has ripened for one batch.
Hattiesburg frost questions
When is the last frost in Hattiesburg, MS?
The median last 32 °F freeze at HATTIESBURG 5SW, MS is March 7: half of years see a later one. One year in ten, a freeze still comes after March 26; nine years in ten, it comes after February 14. Source: NOAA NCEI 1991–2020 U.S. Climate Normals.
When is the first frost in Hattiesburg, MS?
The median first 32 °F freeze of fall is November 23. One year in ten it arrives before November 5; nine years in ten, before December 14.
How long is the growing season in Hattiesburg, MS?
261 days between the last spring and first fall 32 °F freeze in a median year. Nine years in ten the season runs at least 234 days; one year in ten, at least 290 days.
What growing zone is Hattiesburg, MS?
USDA hardiness zone 8b, per the 2023 USDA Plant Hardiness Zone Map for ZIP 39406. A zone describes the coldest winter night, not when frost ends, so it is the wrong number for a planting calendar — the frost dates on this page are the right one.
When should I plant tomatoes in Hattiesburg, MS?
Start Roma VF (determinate paste) seeds indoors around Jan 24 and transplant around Mar 14, 1 week after the median last frost. To cut the freeze risk to one year in ten, wait for Mar 26. First ripe fruit lands around May 28.
When should I plant peppers in Hattiesburg, MS?
Sow jalapeño indoors on a heat mat around Jan 10; transplant no earlier than Mar 14, and wait past it until nights hold above 50 °F — that can run weeks later. First green pods around May 28.
Nearby in Mississippi
- Gulfportlast frost Feb 12
- Biloxilast frost Feb 12
- Jacksonlast frost Mar 6
- Olive Branchlast frost Mar 26
- Southavenlast frost Mar 16
All Mississippi frost dates → · How frost-date math drives a sowing calendar →