Cornville, AZ frost dates
Last spring frostMar 30median date
First fall frostNov 10median date
Growing season225 daysfrost-free
Hardiness zone8bZone 8b
How Cornville compares
- In 8 years out of 10, the last spring frost in Cornville falls between March 9 and April 21, a 43-day window. The first fall frost falls between October 25 and November 23.
- The median last frost is 17 days earlier than the Arizona median of Apr 16.
- Its 225-day growing season is longer than 70% of the 193 Arizona places with a regular frost season (state median 197 days).
- The last frost is 14 days later 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 63 nights a year at or below 32°F.
- Compared with Flagstaff, AZ, 57 km away, the last frost here is 66 days earlier than there and the growing season is 109 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 9 |
| 50% (median) | March 30 |
| 10% (safe for tender plants) | April 21 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 25 |
| 50% (median) | November 10 |
| 90% (late) | November 23 |
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 Cornville, AZ
Cornville, AZ frost dates — last frost Mar 30, first frost Nov 10, zone 8b. whenisthelastfrost.com
Crop
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Start indoors: Jan 5 to Jan 19Transplant outside: Mar 2 to Mar 16
Start indoors: Jan 19 to Feb 2Transplant outside: Apr 13 to Apr 27
Start indoors: Jan 19 to Feb 2Transplant outside: Apr 13 to Apr 27
Start indoors: Feb 2 to Feb 16Transplant outside: Apr 6 to Apr 20
Start indoors: Feb 2 to Feb 16Transplant outside: Mar 9 to Mar 23Sow outdoors: Mar 2 to Apr 6Plant for fall: Sep 15 to Oct 13
Start indoors: Feb 2 to Feb 16Transplant outside: Mar 2 to Mar 16Sow outdoors: Mar 2 to Mar 16Plant for fall: Sep 1 to Sep 22
Start indoors: Feb 2 to Feb 16Transplant outside: Mar 16 to Mar 30Plant for fall: Aug 4 to Aug 25
Start indoors: Feb 2 to Feb 16Transplant outside: Mar 9 to Mar 23Plant for fall: Aug 4 to Aug 25
Start indoors: Feb 2 to Feb 16Transplant outside: Mar 16 to Mar 30Plant for fall: Aug 4 to Aug 25
Start indoors: Feb 16 to Mar 2Transplant outside: Apr 20 to May 4Sow outdoors: Apr 20 to May 4
Start indoors: Feb 16 to Mar 2Transplant outside: Apr 6 to Apr 20
Sow outdoors: Feb 16 to Mar 9Plant for fall: Aug 18 to Sep 8
Sow outdoors: Feb 16 to Mar 9Plant for fall: Sep 15 to Oct 6
Sow outdoors: Feb 23 to Apr 6Plant for fall: Sep 29 to Oct 20
Start indoors: Mar 2 to Mar 9Transplant outside: Apr 13 to Apr 20Sow outdoors: Apr 6 to Apr 20Plant for fall: Aug 25 to Sep 8
Start indoors: Mar 2 to Mar 9Sow outdoors: Apr 6 to Apr 20Plant for fall: Sep 1 to Sep 15
Start indoors: Mar 2 to Mar 9Sow outdoors: Apr 6 to Apr 20
Start indoors: Mar 2 to Mar 9Transplant outside: Apr 13 to Apr 27
Sow outdoors: Mar 9 to Apr 6Plant for fall: Aug 18 to Sep 1
Sow outdoors: Mar 9 to Apr 6Plant for fall: Sep 1 to Sep 15
Sow outdoors: Mar 9 to Mar 30
Sow outdoors: Mar 16 to Apr 13Plant for fall: Sep 1 to Sep 15
Sow outdoors: Mar 16 to Apr 6Plant for fall: Sep 15 to Oct 6
Sow outdoors: Apr 6 to Apr 27Plant for fall: Aug 25 to Sep 8
Sow outdoors: Apr 6 to Apr 20
Transplant outside: Apr 13 to May 4
Plant for fall: Oct 27 to Dec 1
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Cornville, AZ
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 5 – Jan 19 | Mar 2 – Mar 16 | — | — |
| Peppers | Jan 19 – Feb 2 | Apr 13 – Apr 27 | — | — |
| Eggplant | Jan 19 – Feb 2 | Apr 13 – Apr 27 | — | — |
| Tomatoes | Feb 2 – Feb 16 | Apr 6 – Apr 20 | — | — |
| Lettuce | Feb 2 – Feb 16 | Mar 9 – Mar 23 | Mar 2 – Apr 6 | Sep 15 – Oct 13 |
| Kale | Feb 2 – Feb 16 | Mar 2 – Mar 16 | Mar 2 – Mar 16 | Sep 1 – Sep 22 |
| Broccoli | Feb 2 – Feb 16 | Mar 16 – Mar 30 | — | Aug 4 – Aug 25 |
| Cabbage | Feb 2 – Feb 16 | Mar 9 – Mar 23 | — | Aug 4 – Aug 25 |
| Cauliflower | Feb 2 – Feb 16 | Mar 16 – Mar 30 | — | Aug 4 – Aug 25 |
| Okra | Feb 16 – Mar 2 | Apr 20 – May 4 | Apr 20 – May 4 | — |
| Basil | Feb 16 – Mar 2 | Apr 6 – Apr 20 | — | — |
| Peas | — | — | Feb 16 – Mar 9 | Aug 18 – Sep 8 |
| Spinach | — | — | Feb 16 – Mar 9 | Sep 15 – Oct 6 |
| Radishes | — | — | Feb 23 – Apr 6 | Sep 29 – Oct 20 |
| Cucumbers | Mar 2 – Mar 9 | Apr 13 – Apr 20 | Apr 6 – Apr 20 | Aug 25 – Sep 8 |
| Zucchini & Summer Squash | Mar 2 – Mar 9 | — | Apr 6 – Apr 20 | Sep 1 – Sep 15 |
| Winter Squash & Pumpkins | Mar 2 – Mar 9 | — | Apr 6 – Apr 20 | — |
| Melons & Watermelon | Mar 2 – Mar 9 | Apr 13 – Apr 27 | — | — |
| Carrots | — | — | Mar 9 – Apr 6 | Aug 18 – Sep 1 |
| Beets | — | — | Mar 9 – Apr 6 | Sep 1 – Sep 15 |
| Potatoes | — | — | Mar 9 – Mar 30 | — |
| Swiss Chard | — | — | Mar 16 – Apr 13 | Sep 1 – Sep 15 |
| Cilantro | — | — | Mar 16 – Apr 6 | Sep 15 – Oct 6 |
| Green Beans | — | — | Apr 6 – Apr 27 | Aug 25 – Sep 8 |
| Sweet Corn | — | — | Apr 6 – Apr 20 | — |
| Sweet Potatoes | — | Apr 13 – May 4 | — | — |
| Garlic | — | — | — | Oct 27 – Dec 1 |
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 Tuzigoot, AZ weather station, 12 km away (elevation 3,471 ft (1,058 m)).
Frost dates near Cornville
- Cottonwood Mar 30 · Nov 10
- Clarkdale Mar 30 · Nov 10
- Lake Montezuma Apr 16 · Oct 30
- Rimrock Apr 16 · Oct 30
- Sedona Apr 1 · Nov 17
- Camp Verde Apr 16 · Oct 30
- Jerome Mar 26 · Nov 25
- Munds Park Jun 10 · Sep 27
- Prescott Valley Apr 20 · Oct 27
- Dewey Apr 30 · Oct 20
Frequently asked questions
When is the last frost in Cornville, AZ?
The median last spring frost in Cornville, AZ is March 30. There is still about a 10% chance of frost after April 21, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Cornville, AZ?
The median first fall frost is November 10, with about a 10% chance of frost before October 25.
How long is the growing season in Cornville, AZ?
About 225 days between the median last spring frost and first fall frost.
What planting zone is Cornville, AZ?
Cornville, AZ is in USDA hardiness zone 8b.