Tonalea, AZ frost dates
Last spring frostMay 7median date
First fall frostOct 15median date
Growing season161 daysfrost-free
Hardiness zone7aZone 7a
How Tonalea compares
- In 8 years out of 10, the last spring frost in Tonalea falls between April 23 and May 26, a 33-day window. The first fall frost falls between September 30 and November 1.
- The median last frost is 21 days later than the Arizona median of Apr 16.
- Its 161-day growing season is longer than 29% of the 193 Arizona places with a regular frost season (state median 197 days).
- The last frost is 21 days later 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 139 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 23 |
| 50% (median) | May 7 |
| 10% (safe for tender plants) | May 26 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 30 |
| 50% (median) | October 15 |
| 90% (late) | November 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 Tonalea, AZ
Tonalea, AZ frost dates — last frost May 7, first frost Oct 15, zone 7a. whenisthelastfrost.com
Crop
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Start indoors: Feb 12 to Feb 26Transplant outside: Apr 9 to Apr 23
Start indoors: Feb 26 to Mar 12Transplant outside: May 21 to Jun 4
Start indoors: Feb 26 to Mar 12Transplant outside: May 21 to Jun 4
Start indoors: Mar 12 to Mar 26Transplant outside: May 14 to May 28
Start indoors: Mar 12 to Mar 26Transplant outside: Apr 16 to Apr 30Sow outdoors: Apr 9 to May 14Plant for fall: Aug 20 to Sep 17
Start indoors: Mar 12 to Mar 26Transplant outside: Apr 9 to Apr 23Sow outdoors: Apr 9 to Apr 23Plant for fall: Aug 6 to Aug 27
Start indoors: Mar 12 to Mar 26Transplant outside: Apr 23 to May 7Plant for fall: Jul 9 to Jul 30
Start indoors: Mar 12 to Mar 26Transplant outside: Apr 16 to Apr 30Plant for fall: Jul 9 to Jul 30
Start indoors: Mar 12 to Mar 26Transplant outside: Apr 23 to May 7Plant for fall: Jul 9 to Jul 30
Start indoors: Mar 26 to Apr 9Transplant outside: May 28 to Jun 11Sow outdoors: May 28 to Jun 11
Start indoors: Mar 26 to Apr 9Transplant outside: May 14 to May 28
Sow outdoors: Mar 26 to Apr 16Plant for fall: Jul 23 to Aug 13
Sow outdoors: Mar 26 to Apr 16Plant for fall: Aug 20 to Sep 10
Sow outdoors: Apr 2 to May 14Plant for fall: Sep 3 to Sep 24
Start indoors: Apr 9 to Apr 16Transplant outside: May 21 to May 28Sow outdoors: May 14 to May 28Plant for fall: Jul 30 to Aug 13
Start indoors: Apr 9 to Apr 16Sow outdoors: May 14 to May 28Plant for fall: Aug 6 to Aug 20
Start indoors: Apr 9 to Apr 16Sow outdoors: May 14 to May 28
Start indoors: Apr 9 to Apr 16Transplant outside: May 21 to Jun 4
Sow outdoors: Apr 16 to May 14Plant for fall: Jul 23 to Aug 6
Sow outdoors: Apr 16 to May 14Plant for fall: Aug 6 to Aug 20
Sow outdoors: Apr 16 to May 7
Sow outdoors: Apr 23 to May 21Plant for fall: Aug 6 to Aug 20
Sow outdoors: Apr 23 to May 14Plant for fall: Aug 20 to Sep 10
Sow outdoors: May 14 to Jun 4Plant for fall: Jul 30 to Aug 13
Sow outdoors: May 14 to May 28
Transplant outside: May 21 to Jun 11
Plant for fall: Oct 1 to Nov 5
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Tonalea, AZ
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 12 – Feb 26 | Apr 9 – Apr 23 | — | — |
| Peppers | Feb 26 – Mar 12 | May 21 – Jun 4 | — | — |
| Eggplant | Feb 26 – Mar 12 | May 21 – Jun 4 | — | — |
| Tomatoes | Mar 12 – Mar 26 | May 14 – May 28 | — | — |
| Lettuce | Mar 12 – Mar 26 | Apr 16 – Apr 30 | Apr 9 – May 14 | Aug 20 – Sep 17 |
| Kale | Mar 12 – Mar 26 | Apr 9 – Apr 23 | Apr 9 – Apr 23 | Aug 6 – Aug 27 |
| Broccoli | Mar 12 – Mar 26 | Apr 23 – May 7 | — | Jul 9 – Jul 30 |
| Cabbage | Mar 12 – Mar 26 | Apr 16 – Apr 30 | — | Jul 9 – Jul 30 |
| Cauliflower | Mar 12 – Mar 26 | Apr 23 – May 7 | — | Jul 9 – Jul 30 |
| Okra | Mar 26 – Apr 9 | May 28 – Jun 11 | May 28 – Jun 11 | — |
| Basil | Mar 26 – Apr 9 | May 14 – May 28 | — | — |
| Peas | — | — | Mar 26 – Apr 16 | Jul 23 – Aug 13 |
| Spinach | — | — | Mar 26 – Apr 16 | Aug 20 – Sep 10 |
| Radishes | — | — | Apr 2 – May 14 | Sep 3 – Sep 24 |
| Cucumbers | Apr 9 – Apr 16 | May 21 – May 28 | May 14 – May 28 | Jul 30 – Aug 13 |
| Zucchini & Summer Squash | Apr 9 – Apr 16 | — | May 14 – May 28 | Aug 6 – Aug 20 |
| Winter Squash & Pumpkins | Apr 9 – Apr 16 | — | May 14 – May 28 | — |
| Melons & Watermelon | Apr 9 – Apr 16 | May 21 – Jun 4 | — | — |
| Carrots | — | — | Apr 16 – May 14 | Jul 23 – Aug 6 |
| Beets | — | — | Apr 16 – May 14 | Aug 6 – Aug 20 |
| Potatoes | — | — | Apr 16 – May 7 | — |
| Swiss Chard | — | — | Apr 23 – May 21 | Aug 6 – Aug 20 |
| Cilantro | — | — | Apr 23 – May 14 | Aug 20 – Sep 10 |
| Green Beans | — | — | May 14 – Jun 4 | Jul 30 – Aug 13 |
| Sweet Corn | — | — | May 14 – May 28 | — |
| Sweet Potatoes | — | May 21 – Jun 11 | — | — |
| Garlic | — | — | — | Oct 1 – Nov 5 |
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 Betatakin, AZ weather station, 27 km away (elevation 7,287 ft (2,221 m)).
Frost dates near Tonalea
- Shonto May 7 · Oct 15
- Kayenta May 7 · Oct 15
- Kaibeto Apr 16 · Oct 28
- Page Mar 27 · Nov 9
- Tuba City Apr 16 · Oct 28
- Pinon May 16 · Oct 10
- Marble Canyon Mar 5 · Nov 19
- Dennehotso Apr 10 · Nov 1
- Hotevilla May 16 · Oct 10
- Kykotsmovi Village May 16 · Oct 10
Frequently asked questions
When is the last frost in Tonalea, AZ?
The median last spring frost in Tonalea, AZ is May 7. There is still about a 10% chance of frost after May 26, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Tonalea, AZ?
The median first fall frost is October 15, with about a 10% chance of frost before September 30.
How long is the growing season in Tonalea, AZ?
About 161 days between the median last spring frost and first fall frost.
What planting zone is Tonalea, AZ?
Tonalea, AZ is in USDA hardiness zone 7a.