Diamond, MO frost dates
Last spring frostApr 18median date
First fall frostOct 22median date
Growing season187 daysfrost-free
Hardiness zone7aZone 7a
How Diamond compares
- In 8 years out of 10, the last spring frost in Diamond falls between April 2 and May 3, a 31-day window. The first fall frost falls between October 7 and November 2.
- The median last frost is 6 days later than the Missouri median of Apr 12.
- Its 187-day growing season is longer than 22% of the 938 Missouri places with a regular frost season (state median 195 days).
- The last frost is typical for zone 7a, where the median is Apr 16.
- The weather station records an average of 104 nights a year at or below 32°F.
- Compared with Joplin, MO, 19 km away, the last frost here is 9 days later than there and the growing season is 14 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 2 |
| 50% (median) | April 18 |
| 10% (safe for tender plants) | May 3 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 7 |
| 50% (median) | October 22 |
| 90% (late) | November 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 Diamond, MO
Diamond, MO frost dates — last frost Apr 18, first frost Oct 22, zone 7a. whenisthelastfrost.com
Crop
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Start indoors: Jan 24 to Feb 7Transplant outside: Mar 21 to Apr 4
Start indoors: Feb 7 to Feb 21Transplant outside: May 2 to May 16
Start indoors: Feb 7 to Feb 21Transplant outside: May 2 to May 16
Start indoors: Feb 21 to Mar 7Transplant outside: Apr 25 to May 9
Start indoors: Feb 21 to Mar 7Transplant outside: Mar 28 to Apr 11Sow outdoors: Mar 21 to Apr 25Plant for fall: Aug 27 to Sep 24
Start indoors: Feb 21 to Mar 7Transplant outside: Mar 21 to Apr 4Sow outdoors: Mar 21 to Apr 4Plant for fall: Aug 13 to Sep 3
Start indoors: Feb 21 to Mar 7Transplant outside: Apr 4 to Apr 18Plant for fall: Jul 16 to Aug 6
Start indoors: Feb 21 to Mar 7Transplant outside: Mar 28 to Apr 11Plant for fall: Jul 16 to Aug 6
Start indoors: Feb 21 to Mar 7Transplant outside: Apr 4 to Apr 18Plant for fall: Jul 16 to Aug 6
Start indoors: Mar 7 to Mar 21Transplant outside: May 9 to May 23Sow outdoors: May 9 to May 23
Start indoors: Mar 7 to Mar 21Transplant outside: Apr 25 to May 9
Sow outdoors: Mar 7 to Mar 28Plant for fall: Jul 30 to Aug 20
Sow outdoors: Mar 7 to Mar 28Plant for fall: Aug 27 to Sep 17
Sow outdoors: Mar 14 to Apr 25Plant for fall: Sep 10 to Oct 1
Start indoors: Mar 21 to Mar 28Transplant outside: May 2 to May 9Sow outdoors: Apr 25 to May 9Plant for fall: Aug 6 to Aug 20
Start indoors: Mar 21 to Mar 28Sow outdoors: Apr 25 to May 9Plant for fall: Aug 13 to Aug 27
Start indoors: Mar 21 to Mar 28Sow outdoors: Apr 25 to May 9
Start indoors: Mar 21 to Mar 28Transplant outside: May 2 to May 16
Sow outdoors: Mar 28 to Apr 25Plant for fall: Jul 30 to Aug 13
Sow outdoors: Mar 28 to Apr 25Plant for fall: Aug 13 to Aug 27
Sow outdoors: Mar 28 to Apr 18
Sow outdoors: Apr 4 to May 2Plant for fall: Aug 13 to Aug 27
Sow outdoors: Apr 4 to Apr 25Plant for fall: Aug 27 to Sep 17
Sow outdoors: Apr 25 to May 16Plant for fall: Aug 6 to Aug 20
Sow outdoors: Apr 25 to May 9
Transplant outside: May 2 to May 23
Plant for fall: Oct 8 to Nov 12
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Diamond, MO
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 24 – Feb 7 | Mar 21 – Apr 4 | — | — |
| Peppers | Feb 7 – Feb 21 | May 2 – May 16 | — | — |
| Eggplant | Feb 7 – Feb 21 | May 2 – May 16 | — | — |
| Tomatoes | Feb 21 – Mar 7 | Apr 25 – May 9 | — | — |
| Lettuce | Feb 21 – Mar 7 | Mar 28 – Apr 11 | Mar 21 – Apr 25 | Aug 27 – Sep 24 |
| Kale | Feb 21 – Mar 7 | Mar 21 – Apr 4 | Mar 21 – Apr 4 | Aug 13 – Sep 3 |
| Broccoli | Feb 21 – Mar 7 | Apr 4 – Apr 18 | — | Jul 16 – Aug 6 |
| Cabbage | Feb 21 – Mar 7 | Mar 28 – Apr 11 | — | Jul 16 – Aug 6 |
| Cauliflower | Feb 21 – Mar 7 | Apr 4 – Apr 18 | — | Jul 16 – Aug 6 |
| Okra | Mar 7 – Mar 21 | May 9 – May 23 | May 9 – May 23 | — |
| Basil | Mar 7 – Mar 21 | Apr 25 – May 9 | — | — |
| Peas | — | — | Mar 7 – Mar 28 | Jul 30 – Aug 20 |
| Spinach | — | — | Mar 7 – Mar 28 | Aug 27 – Sep 17 |
| Radishes | — | — | Mar 14 – Apr 25 | Sep 10 – Oct 1 |
| Cucumbers | Mar 21 – Mar 28 | May 2 – May 9 | Apr 25 – May 9 | Aug 6 – Aug 20 |
| Zucchini & Summer Squash | Mar 21 – Mar 28 | — | Apr 25 – May 9 | Aug 13 – Aug 27 |
| Winter Squash & Pumpkins | Mar 21 – Mar 28 | — | Apr 25 – May 9 | — |
| Melons & Watermelon | Mar 21 – Mar 28 | May 2 – May 16 | — | — |
| Carrots | — | — | Mar 28 – Apr 25 | Jul 30 – Aug 13 |
| Beets | — | — | Mar 28 – Apr 25 | Aug 13 – Aug 27 |
| Potatoes | — | — | Mar 28 – Apr 18 | — |
| Swiss Chard | — | — | Apr 4 – May 2 | Aug 13 – Aug 27 |
| Cilantro | — | — | Apr 4 – Apr 25 | Aug 27 – Sep 17 |
| Green Beans | — | — | Apr 25 – May 16 | Aug 6 – Aug 20 |
| Sweet Corn | — | — | Apr 25 – May 9 | — |
| Sweet Potatoes | — | May 2 – May 23 | — | — |
| Garlic | — | — | — | Oct 8 – Nov 12 |
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 Diamond 2w, MO weather station, 4 km away (elevation 1,070 ft (326 m)).
Frost dates near Diamond
- Duenweg Apr 18 · Oct 22
- Granby Apr 7 · Oct 31
- Saginaw Apr 18 · Oct 22
- Neosho Apr 7 · Oct 31
- Carthage Apr 4 · Oct 27
- Newtonia Apr 7 · Oct 31
- Joplin Apr 9 · Oct 27
- Carterville Apr 9 · Oct 27
- Reeds Apr 4 · Oct 27
- Sarcoxie Apr 4 · Oct 27
Frequently asked questions
When is the last frost in Diamond, MO?
The median last spring frost in Diamond, MO is April 18. There is still about a 10% chance of frost after May 3, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Diamond, MO?
The median first fall frost is October 22, with about a 10% chance of frost before October 7.
How long is the growing season in Diamond, MO?
About 187 days between the median last spring frost and first fall frost.
What planting zone is Diamond, MO?
Diamond, MO is in USDA hardiness zone 7a.