Dateland, AZ frost dates
Last spring frostJan 25median date
First fall frostDec 13median date
Growing season322 daysfrost-free
Hardiness zone9bZone 9b
Frost is light and occasional here — typically a few cold nights around midwinter (about 11 a year). Cover tender plants when frost is forecast.
How Dateland compares
- In a typical year, frost nights in Dateland fall between December 13 and January 25. In 1 year in 10 the first frost comes as early as November 29, or the last frost as late as February 25.
- Nearby Yuma, AZ, 104 km away, rarely gets frost, a reminder of how much elevation and distance from the coast matter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | December 27 |
| 50% (median) | January 25 |
| 10% (safe for tender plants) | February 25 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 29 |
| 50% (median) | December 13 |
| 90% (late) | January 1 |
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 Dateland, AZ
Dateland, AZ frost dates — last frost Jan 25, first frost Dec 13, zone 9b. whenisthelastfrost.com
In mild climates, summer heat limits many crops as much as frost does. Use this calendar for spring planting and lean on fall and winter for cool-season crops.
Crop
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Start indoors: Nov 2 to Nov 16Transplant outside: Dec 28 to Jan 11Transplant outside: Dec 28 to Jan 11
Start indoors: Nov 16 to Nov 30Transplant outside: Feb 8 to Feb 22
Start indoors: Nov 16 to Nov 30Transplant outside: Feb 8 to Feb 22
Start indoors: Nov 30 to Dec 14Transplant outside: Feb 1 to Feb 15
Start indoors: Nov 30 to Dec 14Transplant outside: Jan 4 to Jan 18Sow outdoors: Dec 28 to Feb 1Sow outdoors: Dec 28 to Feb 1Plant for fall: Oct 18 to Nov 15
Start indoors: Nov 30 to Dec 14Transplant outside: Dec 28 to Jan 11Transplant outside: Dec 28 to Jan 11Sow outdoors: Dec 28 to Jan 11Sow outdoors: Dec 28 to Jan 11Plant for fall: Oct 4 to Oct 25
Start indoors: Nov 30 to Dec 14Transplant outside: Jan 11 to Jan 25Plant for fall: Sep 6 to Sep 27
Start indoors: Nov 30 to Dec 14Transplant outside: Jan 4 to Jan 18Plant for fall: Sep 6 to Sep 27
Start indoors: Nov 30 to Dec 14Transplant outside: Jan 11 to Jan 25Plant for fall: Sep 6 to Sep 27
Start indoors: Dec 14 to Dec 28Transplant outside: Feb 15 to Mar 1Sow outdoors: Feb 15 to Mar 1
Start indoors: Dec 14 to Dec 28Transplant outside: Feb 1 to Feb 15
Sow outdoors: Dec 14 to Jan 4Sow outdoors: Dec 14 to Jan 4Plant for fall: Sep 20 to Oct 11
Sow outdoors: Dec 14 to Jan 4Sow outdoors: Dec 14 to Jan 4Plant for fall: Oct 18 to Nov 8
Sow outdoors: Dec 21 to Feb 1Sow outdoors: Dec 21 to Feb 1Plant for fall: Nov 1 to Nov 22
Start indoors: Dec 28 to Jan 4Start indoors: Dec 28 to Jan 4Transplant outside: Feb 8 to Feb 15Sow outdoors: Feb 1 to Feb 15Plant for fall: Sep 27 to Oct 11
Start indoors: Dec 28 to Jan 4Start indoors: Dec 28 to Jan 4Sow outdoors: Feb 1 to Feb 15Plant for fall: Oct 4 to Oct 18
Start indoors: Dec 28 to Jan 4Start indoors: Dec 28 to Jan 4Sow outdoors: Feb 1 to Feb 15
Start indoors: Dec 28 to Jan 4Start indoors: Dec 28 to Jan 4Transplant outside: Feb 8 to Feb 22
Sow outdoors: Jan 4 to Feb 1Plant for fall: Sep 20 to Oct 4
Sow outdoors: Jan 4 to Feb 1Plant for fall: Oct 4 to Oct 18
Sow outdoors: Jan 4 to Jan 25
Sow outdoors: Jan 11 to Feb 8Plant for fall: Oct 4 to Oct 18
Sow outdoors: Jan 11 to Feb 1Plant for fall: Oct 18 to Nov 8
Sow outdoors: Feb 1 to Feb 22Plant for fall: Sep 27 to Oct 11
Sow outdoors: Feb 1 to Feb 15
Transplant outside: Feb 8 to Mar 1
Plant for fall: Nov 29 to Jan 3Plant for fall: Nov 29 to Jan 3
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Dateland, AZ
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Nov 2 – Nov 16 | Dec 28 – Jan 11 | — | — |
| Peppers | Nov 16 – Nov 30 | Feb 8 – Feb 22 | — | — |
| Eggplant | Nov 16 – Nov 30 | Feb 8 – Feb 22 | — | — |
| Tomatoes | Nov 30 – Dec 14 | Feb 1 – Feb 15 | — | — |
| Lettuce | Nov 30 – Dec 14 | Jan 4 – Jan 18 | Dec 28 – Feb 1 | Oct 18 – Nov 15 |
| Kale | Nov 30 – Dec 14 | Dec 28 – Jan 11 | Dec 28 – Jan 11 | Oct 4 – Oct 25 |
| Broccoli | Nov 30 – Dec 14 | Jan 11 – Jan 25 | — | Sep 6 – Sep 27 |
| Cabbage | Nov 30 – Dec 14 | Jan 4 – Jan 18 | — | Sep 6 – Sep 27 |
| Cauliflower | Nov 30 – Dec 14 | Jan 11 – Jan 25 | — | Sep 6 – Sep 27 |
| Okra | Dec 14 – Dec 28 | Feb 15 – Mar 1 | Feb 15 – Mar 1 | — |
| Basil | Dec 14 – Dec 28 | Feb 1 – Feb 15 | — | — |
| Peas | — | — | Dec 14 – Jan 4 | Sep 20 – Oct 11 |
| Spinach | — | — | Dec 14 – Jan 4 | Oct 18 – Nov 8 |
| Radishes | — | — | Dec 21 – Feb 1 | Nov 1 – Nov 22 |
| Cucumbers | Dec 28 – Jan 4 | Feb 8 – Feb 15 | Feb 1 – Feb 15 | Sep 27 – Oct 11 |
| Zucchini & Summer Squash | Dec 28 – Jan 4 | — | Feb 1 – Feb 15 | Oct 4 – Oct 18 |
| Winter Squash & Pumpkins | Dec 28 – Jan 4 | — | Feb 1 – Feb 15 | — |
| Melons & Watermelon | Dec 28 – Jan 4 | Feb 8 – Feb 22 | — | — |
| Carrots | — | — | Jan 4 – Feb 1 | Sep 20 – Oct 4 |
| Beets | — | — | Jan 4 – Feb 1 | Oct 4 – Oct 18 |
| Potatoes | — | — | Jan 4 – Jan 25 | — |
| Swiss Chard | — | — | Jan 11 – Feb 8 | Oct 4 – Oct 18 |
| Cilantro | — | — | Jan 11 – Feb 1 | Oct 18 – Nov 8 |
| Green Beans | — | — | Feb 1 – Feb 22 | Sep 27 – Oct 11 |
| Sweet Corn | — | — | Feb 1 – Feb 15 | — |
| Sweet Potatoes | — | Feb 8 – Mar 1 | — | — |
| Garlic | — | — | — | Nov 29 – Jan 3 |
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 Dateland Whitewing Rch, AZ weather station, 12 km away (elevation 522 ft (159 m)).
Frost dates near Dateland
- Roll Feb 13 · Dec 1
- Tacna Feb 13 · Dec 1
- Gila Bend Jan 23 · Dec 11
- Wellton Jan 11 · Dec 21
- Tonopah Jan 21 · Dec 15
- Arlington Jan 21 · Dec 15
- Palo Verde Jan 7 · Dec 24
- Salome Mar 17 · Nov 19
- Ajo Jan 10 · Dec 21
- Yuma rare frost
Frequently asked questions
When is the last frost in Dateland, AZ?
The median last spring frost in Dateland, AZ is January 25. There is still about a 10% chance of frost after February 25, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Dateland, AZ?
The median first fall frost is December 13, with about a 10% chance of frost before November 29.
How long is the growing season in Dateland, AZ?
About 322 days between the median last spring frost and first fall frost.
What planting zone is Dateland, AZ?
Dateland, AZ is in USDA hardiness zone 9b.