Diamondhead, MS frost dates
Last spring frostFeb 21median date
First fall frostDec 3median date
Growing season285 daysfrost-free
Hardiness zone9aZone 9a
How Diamondhead compares
- In 8 years out of 10, the last spring frost in Diamondhead falls between January 25 and March 18, a 52-day window. The first fall frost falls between November 13 and January 2.
- The median last frost is 24 days earlier than the Mississippi median of Mar 17.
- Its 285-day growing season is among the longest of the 435 Mississippi places with a regular frost season.
- The last frost is 10 days earlier than the zone 9a median of Mar 3. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 9a chart.
- The weather station records an average of 18 nights a year at or below 32°F.
- Compared with Gulfport, MS, 30 km away, the last frost here is 2 days earlier than there and the growing season is 2 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | January 25 |
| 50% (median) | February 21 |
| 10% (safe for tender plants) | March 18 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 13 |
| 50% (median) | December 3 |
| 90% (late) | January 2 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Diamondhead, MS
Diamondhead, MS frost dates — last frost Feb 21, first frost Dec 3, zone 9a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Nov 29 to Dec 13Transplant outside: Jan 24 to Feb 7
Start indoors: Dec 13 to Dec 27Transplant outside: Mar 7 to Mar 21
Start indoors: Dec 13 to Dec 27Transplant outside: Mar 7 to Mar 21
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Feb 28 to Mar 14
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Jan 31 to Feb 14Sow outdoors: Jan 24 to Feb 28Plant for fall: Oct 8 to Nov 5
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Jan 24 to Feb 7Sow outdoors: Jan 24 to Feb 7Plant for fall: Sep 24 to Oct 15
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Feb 7 to Feb 21Plant for fall: Aug 27 to Sep 17
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Jan 31 to Feb 14Plant for fall: Aug 27 to Sep 17
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Feb 7 to Feb 21Plant for fall: Aug 27 to Sep 17
Start indoors: Jan 10 to Jan 24Transplant outside: Mar 14 to Mar 28Sow outdoors: Mar 14 to Mar 28
Start indoors: Jan 10 to Jan 24Transplant outside: Feb 28 to Mar 14
Sow outdoors: Jan 10 to Jan 31Plant for fall: Sep 10 to Oct 1
Sow outdoors: Jan 10 to Jan 31Plant for fall: Oct 8 to Oct 29
Sow outdoors: Jan 17 to Feb 28Plant for fall: Oct 22 to Nov 12
Start indoors: Jan 24 to Jan 31Transplant outside: Mar 7 to Mar 14Sow outdoors: Feb 28 to Mar 14Plant for fall: Sep 17 to Oct 1
Start indoors: Jan 24 to Jan 31Sow outdoors: Feb 28 to Mar 14Plant for fall: Sep 24 to Oct 8
Start indoors: Jan 24 to Jan 31Sow outdoors: Feb 28 to Mar 14
Start indoors: Jan 24 to Jan 31Transplant outside: Mar 7 to Mar 21
Sow outdoors: Jan 31 to Feb 28Plant for fall: Sep 10 to Sep 24
Sow outdoors: Jan 31 to Feb 28Plant for fall: Sep 24 to Oct 8
Sow outdoors: Jan 31 to Feb 21
Sow outdoors: Feb 7 to Mar 7Plant for fall: Sep 24 to Oct 8
Sow outdoors: Feb 7 to Feb 28Plant for fall: Oct 8 to Oct 29
Sow outdoors: Feb 28 to Mar 21Plant for fall: Sep 17 to Oct 1
Sow outdoors: Feb 28 to Mar 14
Transplant outside: Mar 7 to Mar 28
Plant for fall: Nov 19 to Dec 24
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Diamondhead, MS
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Nov 29 – Dec 13 | Jan 24 – Feb 7 | — | — |
| Peppers | Dec 13 – Dec 27 | Mar 7 – Mar 21 | — | — |
| Eggplant | Dec 13 – Dec 27 | Mar 7 – Mar 21 | — | — |
| Tomatoes | Dec 27 – Jan 10 | Feb 28 – Mar 14 | — | — |
| Lettuce | Dec 27 – Jan 10 | Jan 31 – Feb 14 | Jan 24 – Feb 28 | Oct 8 – Nov 5 |
| Kale | Dec 27 – Jan 10 | Jan 24 – Feb 7 | Jan 24 – Feb 7 | Sep 24 – Oct 15 |
| Broccoli | Dec 27 – Jan 10 | Feb 7 – Feb 21 | — | Aug 27 – Sep 17 |
| Cabbage | Dec 27 – Jan 10 | Jan 31 – Feb 14 | — | Aug 27 – Sep 17 |
| Cauliflower | Dec 27 – Jan 10 | Feb 7 – Feb 21 | — | Aug 27 – Sep 17 |
| Okra | Jan 10 – Jan 24 | Mar 14 – Mar 28 | Mar 14 – Mar 28 | — |
| Basil | Jan 10 – Jan 24 | Feb 28 – Mar 14 | — | — |
| Peas | — | — | Jan 10 – Jan 31 | Sep 10 – Oct 1 |
| Spinach | — | — | Jan 10 – Jan 31 | Oct 8 – Oct 29 |
| Radishes | — | — | Jan 17 – Feb 28 | Oct 22 – Nov 12 |
| Cucumbers | Jan 24 – Jan 31 | Mar 7 – Mar 14 | Feb 28 – Mar 14 | Sep 17 – Oct 1 |
| Zucchini & Summer Squash | Jan 24 – Jan 31 | — | Feb 28 – Mar 14 | Sep 24 – Oct 8 |
| Winter Squash & Pumpkins | Jan 24 – Jan 31 | — | Feb 28 – Mar 14 | — |
| Melons & Watermelon | Jan 24 – Jan 31 | Mar 7 – Mar 21 | — | — |
| Carrots | — | — | Jan 31 – Feb 28 | Sep 10 – Sep 24 |
| Beets | — | — | Jan 31 – Feb 28 | Sep 24 – Oct 8 |
| Potatoes | — | — | Jan 31 – Feb 21 | — |
| Swiss Chard | — | — | Feb 7 – Mar 7 | Sep 24 – Oct 8 |
| Cilantro | — | — | Feb 7 – Feb 28 | Oct 8 – Oct 29 |
| Green Beans | — | — | Feb 28 – Mar 21 | Sep 17 – Oct 1 |
| Sweet Corn | — | — | Feb 28 – Mar 14 | — |
| Sweet Potatoes | — | Mar 7 – Mar 28 | — | — |
| Garlic | — | — | — | Nov 19 – Dec 24 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Waveland, MS weather station, 9 km away (elevation 7 ft (2 m)).
Frost dates near Diamondhead
- Waveland Feb 21 · Dec 3
- Pass Christian Feb 21 · Dec 3
- Bay Saint Louis Feb 21 · Dec 3
- Stennis Space Center Mar 6 · Nov 19
- Kiln Mar 6 · Nov 19
- Lakeshore Feb 21 · Dec 3
- Long Beach Feb 18 · Dec 14
- Pearlington Mar 6 · Nov 19
- Nicholson Mar 9 · Nov 18
- Gulfport Feb 23 · Dec 3
Frequently asked questions
When is the last frost in Diamondhead, MS?
The median last spring frost in Diamondhead, MS is February 21. There is still about a 10% chance of frost after March 18, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Diamondhead, MS?
The median first fall frost is December 3, with about a 10% chance of frost before November 13.
How long is the growing season in Diamondhead, MS?
About 285 days between the median last spring frost and first fall frost.
What planting zone is Diamondhead, MS?
Diamondhead, MS is in USDA hardiness zone 9a.