Valentine, AZ frost dates
Last spring frostMay 17median date
First fall frostOct 10median date
Growing season146 daysfrost-free
Hardiness zone8aZone 8a
How Valentine compares
- In 8 years out of 10, the last spring frost in Valentine falls between May 1 and June 4, a 34-day window. The first fall frost falls between September 28 and October 26.
- The median last frost is 31 days later than the Arizona median of Apr 16.
- Its 146-day growing season is longer than 20% of the 193 Arizona places with a regular frost season (state median 197 days).
- The last frost is 49 days later than the zone 8a median of Mar 29. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 8a chart.
- The weather station records an average of 165 nights a year at or below 32°F.
- Nearby Lake Havasu City, AZ, 116 km away, gets only light, occasional frost, a reminder of how much elevation and distance from the coast matter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | May 1 |
| 50% (median) | May 17 |
| 10% (safe for tender plants) | June 4 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 28 |
| 50% (median) | October 10 |
| 90% (late) | October 26 |
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 Valentine, AZ
Valentine, AZ frost dates — last frost May 17, first frost Oct 10, zone 8a. whenisthelastfrost.com
Crop
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Start indoors: Feb 22 to Mar 8Transplant outside: Apr 19 to May 3
Start indoors: Mar 8 to Mar 22Transplant outside: May 31 to Jun 14
Start indoors: Mar 8 to Mar 22Transplant outside: May 31 to Jun 14
Start indoors: Mar 22 to Apr 5Transplant outside: May 24 to Jun 7
Start indoors: Mar 22 to Apr 5Transplant outside: Apr 26 to May 10Sow outdoors: Apr 19 to May 24Plant for fall: Aug 15 to Sep 12
Start indoors: Mar 22 to Apr 5Transplant outside: Apr 19 to May 3Sow outdoors: Apr 19 to May 3Plant for fall: Aug 1 to Aug 22
Start indoors: Mar 22 to Apr 5Transplant outside: May 3 to May 17Plant for fall: Jul 4 to Jul 25
Start indoors: Mar 22 to Apr 5Transplant outside: Apr 26 to May 10Plant for fall: Jul 4 to Jul 25
Start indoors: Mar 22 to Apr 5Transplant outside: May 3 to May 17Plant for fall: Jul 4 to Jul 25
Start indoors: Apr 5 to Apr 19Transplant outside: Jun 7 to Jun 21Sow outdoors: Jun 7 to Jun 21
Start indoors: Apr 5 to Apr 19Transplant outside: May 24 to Jun 7
Sow outdoors: Apr 5 to Apr 26Plant for fall: Jul 18 to Aug 8
Sow outdoors: Apr 5 to Apr 26Plant for fall: Aug 15 to Sep 5
Sow outdoors: Apr 12 to May 24Plant for fall: Aug 29 to Sep 19
Start indoors: Apr 19 to Apr 26Transplant outside: May 31 to Jun 7Sow outdoors: May 24 to Jun 7Plant for fall: Jul 25 to Aug 8
Start indoors: Apr 19 to Apr 26Sow outdoors: May 24 to Jun 7Plant for fall: Aug 1 to Aug 15
Start indoors: Apr 19 to Apr 26Sow outdoors: May 24 to Jun 7
Start indoors: Apr 19 to Apr 26Transplant outside: May 31 to Jun 14
Sow outdoors: Apr 26 to May 24Plant for fall: Jul 18 to Aug 1
Sow outdoors: Apr 26 to May 24Plant for fall: Aug 1 to Aug 15
Sow outdoors: Apr 26 to May 17
Sow outdoors: May 3 to May 31Plant for fall: Aug 1 to Aug 15
Sow outdoors: May 3 to May 24Plant for fall: Aug 15 to Sep 5
Sow outdoors: May 24 to Jun 14Plant for fall: Jul 25 to Aug 8
Sow outdoors: May 24 to Jun 7
Transplant outside: May 31 to Jun 21
Plant for fall: Sep 26 to Oct 31
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Valentine, AZ
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 22 – Mar 8 | Apr 19 – May 3 | — | — |
| Peppers | Mar 8 – Mar 22 | May 31 – Jun 14 | — | — |
| Eggplant | Mar 8 – Mar 22 | May 31 – Jun 14 | — | — |
| Tomatoes | Mar 22 – Apr 5 | May 24 – Jun 7 | — | — |
| Lettuce | Mar 22 – Apr 5 | Apr 26 – May 10 | Apr 19 – May 24 | Aug 15 – Sep 12 |
| Kale | Mar 22 – Apr 5 | Apr 19 – May 3 | Apr 19 – May 3 | Aug 1 – Aug 22 |
| Broccoli | Mar 22 – Apr 5 | May 3 – May 17 | — | Jul 4 – Jul 25 |
| Cabbage | Mar 22 – Apr 5 | Apr 26 – May 10 | — | Jul 4 – Jul 25 |
| Cauliflower | Mar 22 – Apr 5 | May 3 – May 17 | — | Jul 4 – Jul 25 |
| Okra | Apr 5 – Apr 19 | Jun 7 – Jun 21 | Jun 7 – Jun 21 | — |
| Basil | Apr 5 – Apr 19 | May 24 – Jun 7 | — | — |
| Peas | — | — | Apr 5 – Apr 26 | Jul 18 – Aug 8 |
| Spinach | — | — | Apr 5 – Apr 26 | Aug 15 – Sep 5 |
| Radishes | — | — | Apr 12 – May 24 | Aug 29 – Sep 19 |
| Cucumbers | Apr 19 – Apr 26 | May 31 – Jun 7 | May 24 – Jun 7 | Jul 25 – Aug 8 |
| Zucchini & Summer Squash | Apr 19 – Apr 26 | — | May 24 – Jun 7 | Aug 1 – Aug 15 |
| Winter Squash & Pumpkins | Apr 19 – Apr 26 | — | May 24 – Jun 7 | — |
| Melons & Watermelon | Apr 19 – Apr 26 | May 31 – Jun 14 | — | — |
| Carrots | — | — | Apr 26 – May 24 | Jul 18 – Aug 1 |
| Beets | — | — | Apr 26 – May 24 | Aug 1 – Aug 15 |
| Potatoes | — | — | Apr 26 – May 17 | — |
| Swiss Chard | — | — | May 3 – May 31 | Aug 1 – Aug 15 |
| Cilantro | — | — | May 3 – May 24 | Aug 15 – Sep 5 |
| Green Beans | — | — | May 24 – Jun 14 | Jul 25 – Aug 8 |
| Sweet Corn | — | — | May 24 – Jun 7 | — |
| Sweet Potatoes | — | May 31 – Jun 21 | — | — |
| Garlic | — | — | — | Sep 26 – Oct 31 |
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 Diamond M Rch, AZ weather station, 24 km away (elevation 5,492 ft (1,674 m)).
Frost dates near Valentine
- Hackberry Apr 2 · Nov 11
- Hualapai Apr 2 · Nov 11
- Peach Springs May 17 · Oct 10
- Kingman (Mohave) Apr 2 · Nov 11
- Kingman Apr 2 · Nov 11
- Temple Bar Marina Apr 2 · Nov 11
- Chloride Apr 2 · Nov 11
- Golden Valley Apr 2 · Nov 11
- Seligman May 10 · Oct 15
- Dolan Springs Jan 7 · Dec 29
Frequently asked questions
When is the last frost in Valentine, AZ?
The median last spring frost in Valentine, AZ is May 17. There is still about a 10% chance of frost after June 4, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Valentine, AZ?
The median first fall frost is October 10, with about a 10% chance of frost before September 28.
How long is the growing season in Valentine, AZ?
About 146 days between the median last spring frost and first fall frost.
What planting zone is Valentine, AZ?
Valentine, AZ is in USDA hardiness zone 8a.