Seligman, AZ frost dates
Last spring frostMay 10median date
First fall frostOct 15median date
Growing season158 daysfrost-free
Hardiness zone7aZone 7a
How Seligman compares
- In 8 years out of 10, the last spring frost in Seligman falls between April 26 and May 29, a 33-day window. The first fall frost falls between October 1 and October 30.
- The median last frost is 24 days later than the Arizona median of Apr 16.
- Its 158-day growing season is longer than 28% of the 193 Arizona places with a regular frost season (state median 197 days).
- The last frost is 24 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 148 nights a year at or below 32°F.
- Compared with Flagstaff, AZ, 120 km away, the last frost here is 25 days earlier than there and the growing season is 42 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 26 |
| 50% (median) | May 10 |
| 10% (safe for tender plants) | May 29 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 1 |
| 50% (median) | October 15 |
| 90% (late) | October 30 |
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 Seligman, AZ
Seligman, AZ frost dates — last frost May 10, first frost Oct 15, zone 7a. whenisthelastfrost.com
Crop
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Start indoors: Feb 15 to Mar 1Transplant outside: Apr 12 to Apr 26
Start indoors: Mar 1 to Mar 15Transplant outside: May 24 to Jun 7
Start indoors: Mar 1 to Mar 15Transplant outside: May 24 to Jun 7
Start indoors: Mar 15 to Mar 29Transplant outside: May 17 to May 31
Start indoors: Mar 15 to Mar 29Transplant outside: Apr 19 to May 3Sow outdoors: Apr 12 to May 17Plant for fall: Aug 20 to Sep 17
Start indoors: Mar 15 to Mar 29Transplant outside: Apr 12 to Apr 26Sow outdoors: Apr 12 to Apr 26Plant for fall: Aug 6 to Aug 27
Start indoors: Mar 15 to Mar 29Transplant outside: Apr 26 to May 10Plant for fall: Jul 9 to Jul 30
Start indoors: Mar 15 to Mar 29Transplant outside: Apr 19 to May 3Plant for fall: Jul 9 to Jul 30
Start indoors: Mar 15 to Mar 29Transplant outside: Apr 26 to May 10Plant for fall: Jul 9 to Jul 30
Start indoors: Mar 29 to Apr 12Transplant outside: May 31 to Jun 14Sow outdoors: May 31 to Jun 14
Start indoors: Mar 29 to Apr 12Transplant outside: May 17 to May 31
Sow outdoors: Mar 29 to Apr 19Plant for fall: Jul 23 to Aug 13
Sow outdoors: Mar 29 to Apr 19Plant for fall: Aug 20 to Sep 10
Sow outdoors: Apr 5 to May 17Plant for fall: Sep 3 to Sep 24
Start indoors: Apr 12 to Apr 19Transplant outside: May 24 to May 31Sow outdoors: May 17 to May 31Plant for fall: Jul 30 to Aug 13
Start indoors: Apr 12 to Apr 19Sow outdoors: May 17 to May 31Plant for fall: Aug 6 to Aug 20
Start indoors: Apr 12 to Apr 19Sow outdoors: May 17 to May 31
Start indoors: Apr 12 to Apr 19Transplant outside: May 24 to Jun 7
Sow outdoors: Apr 19 to May 17Plant for fall: Jul 23 to Aug 6
Sow outdoors: Apr 19 to May 17Plant for fall: Aug 6 to Aug 20
Sow outdoors: Apr 19 to May 10
Sow outdoors: Apr 26 to May 24Plant for fall: Aug 6 to Aug 20
Sow outdoors: Apr 26 to May 17Plant for fall: Aug 20 to Sep 10
Sow outdoors: May 17 to Jun 7Plant for fall: Jul 30 to Aug 13
Sow outdoors: May 17 to May 31
Transplant outside: May 24 to Jun 14
Plant for fall: Oct 1 to Nov 5
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Seligman, AZ
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 15 – Mar 1 | Apr 12 – Apr 26 | — | — |
| Peppers | Mar 1 – Mar 15 | May 24 – Jun 7 | — | — |
| Eggplant | Mar 1 – Mar 15 | May 24 – Jun 7 | — | — |
| Tomatoes | Mar 15 – Mar 29 | May 17 – May 31 | — | — |
| Lettuce | Mar 15 – Mar 29 | Apr 19 – May 3 | Apr 12 – May 17 | Aug 20 – Sep 17 |
| Kale | Mar 15 – Mar 29 | Apr 12 – Apr 26 | Apr 12 – Apr 26 | Aug 6 – Aug 27 |
| Broccoli | Mar 15 – Mar 29 | Apr 26 – May 10 | — | Jul 9 – Jul 30 |
| Cabbage | Mar 15 – Mar 29 | Apr 19 – May 3 | — | Jul 9 – Jul 30 |
| Cauliflower | Mar 15 – Mar 29 | Apr 26 – May 10 | — | Jul 9 – Jul 30 |
| Okra | Mar 29 – Apr 12 | May 31 – Jun 14 | May 31 – Jun 14 | — |
| Basil | Mar 29 – Apr 12 | May 17 – May 31 | — | — |
| Peas | — | — | Mar 29 – Apr 19 | Jul 23 – Aug 13 |
| Spinach | — | — | Mar 29 – Apr 19 | Aug 20 – Sep 10 |
| Radishes | — | — | Apr 5 – May 17 | Sep 3 – Sep 24 |
| Cucumbers | Apr 12 – Apr 19 | May 24 – May 31 | May 17 – May 31 | Jul 30 – Aug 13 |
| Zucchini & Summer Squash | Apr 12 – Apr 19 | — | May 17 – May 31 | Aug 6 – Aug 20 |
| Winter Squash & Pumpkins | Apr 12 – Apr 19 | — | May 17 – May 31 | — |
| Melons & Watermelon | Apr 12 – Apr 19 | May 24 – Jun 7 | — | — |
| Carrots | — | — | Apr 19 – May 17 | Jul 23 – Aug 6 |
| Beets | — | — | Apr 19 – May 17 | Aug 6 – Aug 20 |
| Potatoes | — | — | Apr 19 – May 10 | — |
| Swiss Chard | — | — | Apr 26 – May 24 | Aug 6 – Aug 20 |
| Cilantro | — | — | Apr 26 – May 17 | Aug 20 – Sep 10 |
| Green Beans | — | — | May 17 – Jun 7 | Jul 30 – Aug 13 |
| Sweet Corn | — | — | May 17 – May 31 | — |
| Sweet Potatoes | — | May 24 – Jun 14 | — | — |
| 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 Seligman, AZ weather station, 7 km away (elevation 5,249 ft (1,600 m)).
Frost dates near Seligman
- Ash Fork May 22 · Oct 5
- Peach Springs May 17 · Oct 10
- Paulden May 24 · Oct 7
- Prescott (Yavapai) May 24 · Oct 7
- Valentine May 17 · Oct 10
- Hackberry Apr 2 · Nov 11
- Kingman (Mohave) Apr 2 · Nov 11
- Chino Valley Apr 27 · Oct 24
- Williams May 9 · Oct 19
- Hualapai Apr 2 · Nov 11
Frequently asked questions
When is the last frost in Seligman, AZ?
The median last spring frost in Seligman, AZ is May 10. There is still about a 10% chance of frost after May 29, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Seligman, AZ?
The median first fall frost is October 15, with about a 10% chance of frost before October 1.
How long is the growing season in Seligman, AZ?
About 158 days between the median last spring frost and first fall frost.
What planting zone is Seligman, AZ?
Seligman, AZ is in USDA hardiness zone 7a.