Frost dates for 39525Diamondhead, MS
The average last spring frost in Diamondhead is February 21 and the average first fall frost is December 3, giving a typical growing season of about 287 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Feb 21
- Average first fall frost
- Dec 3
- Growing season
- 287 days
Safer after Mar 18 (1-in-10 risk)
Possible by Nov 13 (1-in-10 risk)
First frost typically in 30 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | Feb 15 · Mar 10 · Apr 3 | Nov 2 · Nov 19 · Dec 9 | 255 days | 100% |
| Frost / freeze (32°F) | Jan 25 · Feb 21 · Mar 18 | Nov 13 · Dec 3 · Jan 2 | 287 days | 99% |
| Hard freeze (28°F) | Dec 31 · Feb 2 · Mar 6 | Nov 27 · Dec 25 · Jan 25 | 321 days | 93% |
Planting calendar for Diamondhead
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Jan 21 – Mar 29 |
| Tomatoes | Transplant outdoors | Mar 9 – Aug 13 |
| Peppers | Start seeds indoors | Jan 21 – Feb 21 |
| Peppers | Transplant outdoors | Mar 23 – Apr 23 |
| Eggplant | Start seeds indoors | Feb 7 – Mar 8 |
| Eggplant | Transplant outdoors | Mar 23 – Apr 23 |
| Cucumbers | Sow outdoors | Mar 23 – Aug 23 |
| Summer squash | Sow outdoors | Mar 9 – Apr 23 |
| Winter squash & pumpkins | Sow outdoors | Mar 23 – Apr 23 |
| Snap beans | Sow outdoors | Mar 9 – Sep 15 |
| Sweet corn | Sow outdoors | Mar 9 – Aug 13 |
| Watermelon & cantaloupe | Sow outdoors | Mar 23 – Apr 23 |
| Okra | Sow outdoors | Mar 16 – Apr 8 |
| Peas | Sow outdoors (spring) | Jan 21 – Mar 8 |
| Potatoes | Plant outdoors (spring) | Jan 21 – Mar 23 |
| Onions | Start seeds indoors (spring) | Dec 10 – Jan 6 |
| Onions | Transplant outdoors (spring) | Feb 7 – Mar 8 |
| Broccoli | Start seeds indoors (spring) | Jan 3 – Feb 6 |
| Broccoli | Transplant outdoors (spring) | Feb 7 – Mar 8 |
| Broccoli | Start seeds indoors (fall) | Aug 3 – Aug 13 |
| Broccoli | Transplant outdoors (fall) | Sep 2 – Sep 13 |
| Cabbage | Start seeds indoors (spring) | Dec 24 – Jan 21 |
| Cabbage | Transplant outdoors (spring) | Jan 21 – Feb 21 |
| Cabbage | Start seeds indoors (fall) | Jul 24 – Aug 23 |
| Cabbage | Transplant outdoors (fall) | Aug 23 – Sep 23 |
| Leaf lettuce | Sow outdoors (spring) | Jan 21 – Apr 8 |
| Leaf lettuce | Sow outdoors (fall) | Aug 23 – Oct 9 |
| Spinach | Sow outdoors (spring) | Jan 14 – Feb 27 |
| Spinach | Sow outdoors (fall) | Sep 9 – Oct 14 |
| Radishes | Sow outdoors (spring) | Jan 21 – Mar 13 |
| Radishes | Sow outdoors (fall) | Aug 23 – Oct 24 |
| Kale | Sow outdoors (spring) | Feb 7 – Feb 27 |
| Kale | Sow outdoors (fall) | Aug 16 – Sep 23 |
| Carrots | Sow outdoors (spring) | Feb 21 – Apr 8 |
| Carrots | Sow outdoors (fall) | Jul 24 – Sep 8 |
| Garlic | Plant outdoors (fall) | Nov 23 – Dec 24 |
Where these dates come from
ZIP code 39525 is matched to the NOAA station Waveland, MS, 8.7 km away, at 8 ft elevation (31 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Waveland, MS (used) | 8 ft | Feb 21 | Dec 3 |
| Bay St Louis Nasa, MS | 30 ft | Mar 6 | Nov 19 |
| Gulfport Naval Ctr, MS | 35 ft | Feb 18 | Dec 14 |
| Gulfport - Biloxi Ap, MS | 42 ft | Feb 23 | Dec 3 |
Frost dates near Diamondhead
- Waveland, MS 39576 · last Feb 21, first Dec 3
- Pass Christian, MS 39571 · last Feb 18, first Dec 14
- Bay Saint Louis, MS 39520 · last Feb 21, first Dec 3
- Stennis Space Center, MS 39522 · last Mar 6, first Nov 19
- Kiln, MS 39556 · last Mar 6, first Nov 19
- Lakeshore, MS 39558 · last Feb 21, first Dec 3
- Long Beach, MS 39560 · last Feb 18, first Dec 14
- Pearlington, MS 39572 · last Mar 6, first Nov 19
Frequently asked questions
- When is the last frost in Diamondhead, MS?
- For ZIP code 39525, the average last spring frost (32°F) is February 21, based on NOAA 1991-2020 climate normals for the Waveland, MS weather station. There is a 1-in-10 chance of a frost after March 18.
- When is the first frost in Diamondhead, MS?
- The average first fall frost (32°F) is December 3. There is a 1-in-10 chance of frost by November 13, so tender plants are at risk from that point on.
- How long is the growing season in 39525?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 287 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.