Littlefield, AZ frost dates
Last spring frostMar 7median date
First fall frostNov 19median date
Growing season257 daysfrost-free
Hardiness zone8bZone 8b
How Littlefield compares
- In 8 years out of 10, the last spring frost in Littlefield falls between February 16 and April 10, a 53-day window. The first fall frost falls between November 1 and December 5.
- The median last frost is 40 days earlier than the Arizona median of Apr 16.
- Its 257-day growing season is longer than 85% of the 193 Arizona places with a regular frost season (state median 197 days).
- The last frost is 9 days earlier than the zone 8b median of Mar 16. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 8b chart.
- The weather station records an average of 41 nights a year at or below 32°F.
- Compared with Saint George, UT, 39 km away, the last frost here is 7 days earlier than there and the growing season is 16 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | February 16 |
| 50% (median) | March 7 |
| 10% (safe for tender plants) | April 10 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 1 |
| 50% (median) | November 19 |
| 90% (late) | December 5 |
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 Littlefield, AZ
Littlefield, AZ frost dates — last frost Mar 7, first frost Nov 19, zone 8b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Dec 13 to Dec 27Transplant outside: Feb 7 to Feb 21
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Mar 21 to Apr 4
Start indoors: Dec 27 to Jan 10Start indoors: Dec 27 to Jan 10Transplant outside: Mar 21 to Apr 4
Start indoors: Jan 10 to Jan 24Transplant outside: Mar 14 to Mar 28
Start indoors: Jan 10 to Jan 24Transplant outside: Feb 14 to Feb 28Sow outdoors: Feb 7 to Mar 14Plant for fall: Sep 24 to Oct 22
Start indoors: Jan 10 to Jan 24Transplant outside: Feb 7 to Feb 21Sow outdoors: Feb 7 to Feb 21Plant for fall: Sep 10 to Oct 1
Start indoors: Jan 10 to Jan 24Transplant outside: Feb 21 to Mar 7Plant for fall: Aug 13 to Sep 3
Start indoors: Jan 10 to Jan 24Transplant outside: Feb 14 to Feb 28Plant for fall: Aug 13 to Sep 3
Start indoors: Jan 10 to Jan 24Transplant outside: Feb 21 to Mar 7Plant for fall: Aug 13 to Sep 3
Start indoors: Jan 24 to Feb 7Transplant outside: Mar 28 to Apr 11Sow outdoors: Mar 28 to Apr 11
Start indoors: Jan 24 to Feb 7Transplant outside: Mar 14 to Mar 28
Sow outdoors: Jan 24 to Feb 14Plant for fall: Aug 27 to Sep 17
Sow outdoors: Jan 24 to Feb 14Plant for fall: Sep 24 to Oct 15
Sow outdoors: Jan 31 to Mar 14Plant for fall: Oct 8 to Oct 29
Start indoors: Feb 7 to Feb 14Transplant outside: Mar 21 to Mar 28Sow outdoors: Mar 14 to Mar 28Plant for fall: Sep 3 to Sep 17
Start indoors: Feb 7 to Feb 14Sow outdoors: Mar 14 to Mar 28Plant for fall: Sep 10 to Sep 24
Start indoors: Feb 7 to Feb 14Sow outdoors: Mar 14 to Mar 28
Start indoors: Feb 7 to Feb 14Transplant outside: Mar 21 to Apr 4
Sow outdoors: Feb 14 to Mar 14Plant for fall: Aug 27 to Sep 10
Sow outdoors: Feb 14 to Mar 14Plant for fall: Sep 10 to Sep 24
Sow outdoors: Feb 14 to Mar 7
Sow outdoors: Feb 21 to Mar 21Plant for fall: Sep 10 to Sep 24
Sow outdoors: Feb 21 to Mar 14Plant for fall: Sep 24 to Oct 15
Sow outdoors: Mar 14 to Apr 4Plant for fall: Sep 3 to Sep 17
Sow outdoors: Mar 14 to Mar 28
Transplant outside: Mar 21 to Apr 11
Plant for fall: Nov 5 to Dec 10
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Littlefield, AZ
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Dec 13 – Dec 27 | Feb 7 – Feb 21 | — | — |
| Peppers | Dec 27 – Jan 10 | Mar 21 – Apr 4 | — | — |
| Eggplant | Dec 27 – Jan 10 | Mar 21 – Apr 4 | — | — |
| Tomatoes | Jan 10 – Jan 24 | Mar 14 – Mar 28 | — | — |
| Lettuce | Jan 10 – Jan 24 | Feb 14 – Feb 28 | Feb 7 – Mar 14 | Sep 24 – Oct 22 |
| Kale | Jan 10 – Jan 24 | Feb 7 – Feb 21 | Feb 7 – Feb 21 | Sep 10 – Oct 1 |
| Broccoli | Jan 10 – Jan 24 | Feb 21 – Mar 7 | — | Aug 13 – Sep 3 |
| Cabbage | Jan 10 – Jan 24 | Feb 14 – Feb 28 | — | Aug 13 – Sep 3 |
| Cauliflower | Jan 10 – Jan 24 | Feb 21 – Mar 7 | — | Aug 13 – Sep 3 |
| Okra | Jan 24 – Feb 7 | Mar 28 – Apr 11 | Mar 28 – Apr 11 | — |
| Basil | Jan 24 – Feb 7 | Mar 14 – Mar 28 | — | — |
| Peas | — | — | Jan 24 – Feb 14 | Aug 27 – Sep 17 |
| Spinach | — | — | Jan 24 – Feb 14 | Sep 24 – Oct 15 |
| Radishes | — | — | Jan 31 – Mar 14 | Oct 8 – Oct 29 |
| Cucumbers | Feb 7 – Feb 14 | Mar 21 – Mar 28 | Mar 14 – Mar 28 | Sep 3 – Sep 17 |
| Zucchini & Summer Squash | Feb 7 – Feb 14 | — | Mar 14 – Mar 28 | Sep 10 – Sep 24 |
| Winter Squash & Pumpkins | Feb 7 – Feb 14 | — | Mar 14 – Mar 28 | — |
| Melons & Watermelon | Feb 7 – Feb 14 | Mar 21 – Apr 4 | — | — |
| Carrots | — | — | Feb 14 – Mar 14 | Aug 27 – Sep 10 |
| Beets | — | — | Feb 14 – Mar 14 | Sep 10 – Sep 24 |
| Potatoes | — | — | Feb 14 – Mar 7 | — |
| Swiss Chard | — | — | Feb 21 – Mar 21 | Sep 10 – Sep 24 |
| Cilantro | — | — | Feb 21 – Mar 14 | Sep 24 – Oct 15 |
| Green Beans | — | — | Mar 14 – Apr 4 | Sep 3 – Sep 17 |
| Sweet Corn | — | — | Mar 14 – Mar 28 | — |
| Sweet Potatoes | — | Mar 21 – Apr 11 | — | — |
| Garlic | — | — | — | Nov 5 – Dec 10 |
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 Beaver Dam, AZ weather station, 3 km away (elevation 1,932 ft (589 m)).
Frost dates near Littlefield
- Colorado City Apr 26 · Oct 25
- Meadview Mar 5 · Nov 28
- Fredonia Apr 29 · Oct 22
- Supai Jun 1 · Oct 3
- Willow Beach Jan 7 · Dec 29
- Dolan Springs Jan 7 · Dec 29
- Peach Springs May 17 · Oct 10
- Hualapai Apr 2 · Nov 11
- Chloride Apr 2 · Nov 11
- Hackberry Apr 2 · Nov 11
Frequently asked questions
When is the last frost in Littlefield, AZ?
The median last spring frost in Littlefield, AZ is March 7. There is still about a 10% chance of frost after April 10, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Littlefield, AZ?
The median first fall frost is November 19, with about a 10% chance of frost before November 1.
How long is the growing season in Littlefield, AZ?
About 257 days between the median last spring frost and first fall frost.
What planting zone is Littlefield, AZ?
Littlefield, AZ is in USDA hardiness zone 8b.