Prescott (Yavapai), AZ frost dates
Last spring frostMay 24median date
First fall frostOct 7median date
Growing season136 daysfrost-free
Hardiness zone7bZone 7b
How Prescott compares
- In 8 years out of 10, the last spring frost in Prescott falls between May 7 and June 11, a 35-day window. The first fall frost falls between September 27 and October 23.
- The median last frost is 38 days later than the Arizona median of Apr 16.
- Its 136-day growing season is longer than 12% of the 193 Arizona places with a regular frost season (state median 197 days).
- The last frost is 49 days later than the zone 7b median of Apr 5. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 7b chart.
- The weather station records an average of 168 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 7 |
| 50% (median) | May 24 |
| 10% (safe for tender plants) | June 11 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 27 |
| 50% (median) | October 7 |
| 90% (late) | October 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 Prescott, AZ
Prescott (Yavapai), AZ frost dates — last frost May 24, first frost Oct 7, zone 7b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Mar 1 to Mar 15Transplant outside: Apr 26 to May 10
Start indoors: Mar 15 to Mar 29Transplant outside: Jun 7 to Jun 21
Start indoors: Mar 15 to Mar 29Transplant outside: Jun 7 to Jun 21
Start indoors: Mar 29 to Apr 12Transplant outside: May 31 to Jun 14
Start indoors: Mar 29 to Apr 12Transplant outside: May 3 to May 17Sow outdoors: Apr 26 to May 31Plant for fall: Aug 12 to Sep 9
Start indoors: Mar 29 to Apr 12Transplant outside: Apr 26 to May 10Sow outdoors: Apr 26 to May 10Plant for fall: Jul 29 to Aug 19
Start indoors: Mar 29 to Apr 12Transplant outside: May 10 to May 24Plant for fall: Jul 1 to Jul 22
Start indoors: Mar 29 to Apr 12Transplant outside: May 3 to May 17Plant for fall: Jul 1 to Jul 22
Start indoors: Mar 29 to Apr 12Transplant outside: May 10 to May 24Plant for fall: Jul 1 to Jul 22
Start indoors: Apr 12 to Apr 26Transplant outside: Jun 14 to Jun 28Sow outdoors: Jun 14 to Jun 28
Start indoors: Apr 12 to Apr 26Transplant outside: May 31 to Jun 14
Sow outdoors: Apr 12 to May 3Plant for fall: Jul 15 to Aug 5
Sow outdoors: Apr 12 to May 3Plant for fall: Aug 12 to Sep 2
Sow outdoors: Apr 19 to May 31Plant for fall: Aug 26 to Sep 16
Start indoors: Apr 26 to May 3Transplant outside: Jun 7 to Jun 14Sow outdoors: May 31 to Jun 14Plant for fall: Jul 22 to Aug 5
Start indoors: Apr 26 to May 3Sow outdoors: May 31 to Jun 14Plant for fall: Jul 29 to Aug 12
Start indoors: Apr 26 to May 3Sow outdoors: May 31 to Jun 14
Start indoors: Apr 26 to May 3Transplant outside: Jun 7 to Jun 21
Sow outdoors: May 3 to May 31Plant for fall: Jul 15 to Jul 29
Sow outdoors: May 3 to May 31Plant for fall: Jul 29 to Aug 12
Sow outdoors: May 3 to May 24
Sow outdoors: May 10 to Jun 7Plant for fall: Jul 29 to Aug 12
Sow outdoors: May 10 to May 31Plant for fall: Aug 12 to Sep 2
Sow outdoors: May 31 to Jun 21Plant for fall: Jul 22 to Aug 5
Sow outdoors: May 31 to Jun 14
Transplant outside: Jun 7 to Jun 28
Plant for fall: Sep 23 to Oct 28
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Prescott, AZ
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 1 – Mar 15 | Apr 26 – May 10 | — | — |
| Peppers | Mar 15 – Mar 29 | Jun 7 – Jun 21 | — | — |
| Eggplant | Mar 15 – Mar 29 | Jun 7 – Jun 21 | — | — |
| Tomatoes | Mar 29 – Apr 12 | May 31 – Jun 14 | — | — |
| Lettuce | Mar 29 – Apr 12 | May 3 – May 17 | Apr 26 – May 31 | Aug 12 – Sep 9 |
| Kale | Mar 29 – Apr 12 | Apr 26 – May 10 | Apr 26 – May 10 | Jul 29 – Aug 19 |
| Broccoli | Mar 29 – Apr 12 | May 10 – May 24 | — | Jul 1 – Jul 22 |
| Cabbage | Mar 29 – Apr 12 | May 3 – May 17 | — | Jul 1 – Jul 22 |
| Cauliflower | Mar 29 – Apr 12 | May 10 – May 24 | — | Jul 1 – Jul 22 |
| Okra | Apr 12 – Apr 26 | Jun 14 – Jun 28 | Jun 14 – Jun 28 | — |
| Basil | Apr 12 – Apr 26 | May 31 – Jun 14 | — | — |
| Peas | — | — | Apr 12 – May 3 | Jul 15 – Aug 5 |
| Spinach | — | — | Apr 12 – May 3 | Aug 12 – Sep 2 |
| Radishes | — | — | Apr 19 – May 31 | Aug 26 – Sep 16 |
| Cucumbers | Apr 26 – May 3 | Jun 7 – Jun 14 | May 31 – Jun 14 | Jul 22 – Aug 5 |
| Zucchini & Summer Squash | Apr 26 – May 3 | — | May 31 – Jun 14 | Jul 29 – Aug 12 |
| Winter Squash & Pumpkins | Apr 26 – May 3 | — | May 31 – Jun 14 | — |
| Melons & Watermelon | Apr 26 – May 3 | Jun 7 – Jun 21 | — | — |
| Carrots | — | — | May 3 – May 31 | Jul 15 – Jul 29 |
| Beets | — | — | May 3 – May 31 | Jul 29 – Aug 12 |
| Potatoes | — | — | May 3 – May 24 | — |
| Swiss Chard | — | — | May 10 – Jun 7 | Jul 29 – Aug 12 |
| Cilantro | — | — | May 10 – May 31 | Aug 12 – Sep 2 |
| Green Beans | — | — | May 31 – Jun 21 | Jul 22 – Aug 5 |
| Sweet Corn | — | — | May 31 – Jun 14 | — |
| Sweet Potatoes | — | Jun 7 – Jun 28 | — | — |
| Garlic | — | — | — | Sep 23 – Oct 28 |
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 Walnut Creek, AZ weather station, 18 km away (elevation 5,089 ft (1,551 m)).
Frost dates near Prescott
- Bagdad Apr 7 · Nov 12
- Kirkland Apr 7 · Nov 12
- Skull Valley Apr 30 · Oct 20
- Paulden May 24 · Oct 7
- Chino Valley Apr 27 · Oct 24
- Sedona (Yavapai) Apr 20 · Oct 27
- Prescott Apr 30 · Oct 20
- Seligman May 10 · Oct 15
- Ash Fork May 22 · Oct 5
- Wikieup Mar 19 · Nov 23
Frequently asked questions
When is the last frost in Prescott, AZ?
The median last spring frost in Prescott, AZ is May 24. There is still about a 10% chance of frost after June 11, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Prescott, AZ?
The median first fall frost is October 7, with about a 10% chance of frost before September 27.
How long is the growing season in Prescott, AZ?
About 136 days between the median last spring frost and first fall frost.
What planting zone is Prescott, AZ?
Prescott, AZ is in USDA hardiness zone 7b.