Isabella, MO frost dates
Last spring frostApr 2median date
First fall frostNov 1median date
Growing season213 daysfrost-free
Hardiness zone7aZone 7a
How Isabella compares
- In 8 years out of 10, the last spring frost in Isabella falls between March 14 and April 19, a 36-day window. The first fall frost falls between October 19 and November 16.
- The median last frost is 10 days earlier than the Missouri median of Apr 12.
- Its 213-day growing season is longer than 91% of the 938 Missouri places with a regular frost season (state median 195 days).
- The last frost is 14 days earlier than the zone 7a median of Apr 16. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 7a chart.
- The weather station records an average of 73 nights a year at or below 32°F.
- Compared with Springfield, MO, 94 km away, the last frost here is 2 days earlier than there and the growing season is 7 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 14 |
| 50% (median) | April 2 |
| 10% (safe for tender plants) | April 19 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 19 |
| 50% (median) | November 1 |
| 90% (late) | November 16 |
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 Isabella, MO
Isabella, MO frost dates — last frost Apr 2, first frost Nov 1, zone 7a. whenisthelastfrost.com
Crop
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Start indoors: Jan 8 to Jan 22Transplant outside: Mar 5 to Mar 19
Start indoors: Jan 22 to Feb 5Transplant outside: Apr 16 to Apr 30
Start indoors: Jan 22 to Feb 5Transplant outside: Apr 16 to Apr 30
Start indoors: Feb 5 to Feb 19Transplant outside: Apr 9 to Apr 23
Start indoors: Feb 5 to Feb 19Transplant outside: Mar 12 to Mar 26Sow outdoors: Mar 5 to Apr 9Plant for fall: Sep 6 to Oct 4
Start indoors: Feb 5 to Feb 19Transplant outside: Mar 5 to Mar 19Sow outdoors: Mar 5 to Mar 19Plant for fall: Aug 23 to Sep 13
Start indoors: Feb 5 to Feb 19Transplant outside: Mar 19 to Apr 2Plant for fall: Jul 26 to Aug 16
Start indoors: Feb 5 to Feb 19Transplant outside: Mar 12 to Mar 26Plant for fall: Jul 26 to Aug 16
Start indoors: Feb 5 to Feb 19Transplant outside: Mar 19 to Apr 2Plant for fall: Jul 26 to Aug 16
Start indoors: Feb 19 to Mar 5Transplant outside: Apr 23 to May 7Sow outdoors: Apr 23 to May 7
Start indoors: Feb 19 to Mar 5Transplant outside: Apr 9 to Apr 23
Sow outdoors: Feb 19 to Mar 12Plant for fall: Aug 9 to Aug 30
Sow outdoors: Feb 19 to Mar 12Plant for fall: Sep 6 to Sep 27
Sow outdoors: Feb 26 to Apr 9Plant for fall: Sep 20 to Oct 11
Start indoors: Mar 5 to Mar 12Transplant outside: Apr 16 to Apr 23Sow outdoors: Apr 9 to Apr 23Plant for fall: Aug 16 to Aug 30
Start indoors: Mar 5 to Mar 12Sow outdoors: Apr 9 to Apr 23Plant for fall: Aug 23 to Sep 6
Start indoors: Mar 5 to Mar 12Sow outdoors: Apr 9 to Apr 23
Start indoors: Mar 5 to Mar 12Transplant outside: Apr 16 to Apr 30
Sow outdoors: Mar 12 to Apr 9Plant for fall: Aug 9 to Aug 23
Sow outdoors: Mar 12 to Apr 9Plant for fall: Aug 23 to Sep 6
Sow outdoors: Mar 12 to Apr 2
Sow outdoors: Mar 19 to Apr 16Plant for fall: Aug 23 to Sep 6
Sow outdoors: Mar 19 to Apr 9Plant for fall: Sep 6 to Sep 27
Sow outdoors: Apr 9 to Apr 30Plant for fall: Aug 16 to Aug 30
Sow outdoors: Apr 9 to Apr 23
Transplant outside: Apr 16 to May 7
Plant for fall: Oct 18 to Nov 22
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Isabella, MO
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 8 – Jan 22 | Mar 5 – Mar 19 | — | — |
| Peppers | Jan 22 – Feb 5 | Apr 16 – Apr 30 | — | — |
| Eggplant | Jan 22 – Feb 5 | Apr 16 – Apr 30 | — | — |
| Tomatoes | Feb 5 – Feb 19 | Apr 9 – Apr 23 | — | — |
| Lettuce | Feb 5 – Feb 19 | Mar 12 – Mar 26 | Mar 5 – Apr 9 | Sep 6 – Oct 4 |
| Kale | Feb 5 – Feb 19 | Mar 5 – Mar 19 | Mar 5 – Mar 19 | Aug 23 – Sep 13 |
| Broccoli | Feb 5 – Feb 19 | Mar 19 – Apr 2 | — | Jul 26 – Aug 16 |
| Cabbage | Feb 5 – Feb 19 | Mar 12 – Mar 26 | — | Jul 26 – Aug 16 |
| Cauliflower | Feb 5 – Feb 19 | Mar 19 – Apr 2 | — | Jul 26 – Aug 16 |
| Okra | Feb 19 – Mar 5 | Apr 23 – May 7 | Apr 23 – May 7 | — |
| Basil | Feb 19 – Mar 5 | Apr 9 – Apr 23 | — | — |
| Peas | — | — | Feb 19 – Mar 12 | Aug 9 – Aug 30 |
| Spinach | — | — | Feb 19 – Mar 12 | Sep 6 – Sep 27 |
| Radishes | — | — | Feb 26 – Apr 9 | Sep 20 – Oct 11 |
| Cucumbers | Mar 5 – Mar 12 | Apr 16 – Apr 23 | Apr 9 – Apr 23 | Aug 16 – Aug 30 |
| Zucchini & Summer Squash | Mar 5 – Mar 12 | — | Apr 9 – Apr 23 | Aug 23 – Sep 6 |
| Winter Squash & Pumpkins | Mar 5 – Mar 12 | — | Apr 9 – Apr 23 | — |
| Melons & Watermelon | Mar 5 – Mar 12 | Apr 16 – Apr 30 | — | — |
| Carrots | — | — | Mar 12 – Apr 9 | Aug 9 – Aug 23 |
| Beets | — | — | Mar 12 – Apr 9 | Aug 23 – Sep 6 |
| Potatoes | — | — | Mar 12 – Apr 2 | — |
| Swiss Chard | — | — | Mar 19 – Apr 16 | Aug 23 – Sep 6 |
| Cilantro | — | — | Mar 19 – Apr 9 | Sep 6 – Sep 27 |
| Green Beans | — | — | Apr 9 – Apr 30 | Aug 16 – Aug 30 |
| Sweet Corn | — | — | Apr 9 – Apr 23 | — |
| Sweet Potatoes | — | Apr 16 – May 7 | — | — |
| Garlic | — | — | — | Oct 18 – Nov 22 |
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 Mountain Home Baxter Ap, AR weather station, 26 km away (elevation 928 ft (283 m)).
Frost dates near Isabella
- Theodosia Apr 15 · Oct 22
- Pontiac Apr 2 · Nov 1
- Thornfield Apr 10 · Oct 27
- Gainesville Apr 9 · Oct 23
- Noble Apr 10 · Oct 27
- Hardenville Apr 9 · Oct 23
- Wasola Apr 10 · Oct 27
- Protem Apr 15 · Oct 22
- Brixey Apr 14 · Oct 25
- Zanoni Apr 9 · Oct 23
Frequently asked questions
When is the last frost in Isabella, MO?
The median last spring frost in Isabella, MO is April 2. There is still about a 10% chance of frost after April 19, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Isabella, MO?
The median first fall frost is November 1, with about a 10% chance of frost before October 19.
How long is the growing season in Isabella, MO?
About 213 days between the median last spring frost and first fall frost.
What planting zone is Isabella, MO?
Isabella, MO is in USDA hardiness zone 7a.