Blue, AZ frost dates
Last spring frostJun 17median date
First fall frostSep 21median date
Growing season96 daysfrost-free
Hardiness zone8aZone 8a
How Blue compares
- In 8 years out of 10, the last spring frost in Blue falls between June 5 and July 1, a 26-day window. The first fall frost falls between September 8 and October 1.
- The median last frost is 62 days later than the Arizona median of Apr 16.
- Its 96-day growing season is among the shortest of the 193 Arizona places with a regular frost season.
- The last frost is 80 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 233 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | June 5 |
| 50% (median) | June 17 |
| 10% (safe for tender plants) | July 1 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 8 |
| 50% (median) | September 21 |
| 90% (late) | October 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 Blue, AZ
Blue, AZ frost dates — last frost Jun 17, first frost Sep 21, zone 8a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Mar 25 to Apr 8Transplant outside: May 20 to Jun 3
Start indoors: Apr 8 to Apr 22Transplant outside: Jul 1 to Jul 15
Start indoors: Apr 8 to Apr 22Transplant outside: Jul 1 to Jul 15
Start indoors: Apr 22 to May 6Transplant outside: Jun 24 to Jul 8
Start indoors: Apr 22 to May 6Transplant outside: May 27 to Jun 10Sow outdoors: May 20 to Jun 24Plant for fall: Jul 27 to Aug 24
Start indoors: Apr 22 to May 6Transplant outside: May 20 to Jun 3Sow outdoors: May 20 to Jun 3Plant for fall: Jul 13 to Aug 3
Start indoors: Apr 22 to May 6Transplant outside: Jun 3 to Jun 17
Start indoors: Apr 22 to May 6Transplant outside: May 27 to Jun 10
Start indoors: Apr 22 to May 6Transplant outside: Jun 3 to Jun 17
Start indoors: May 6 to May 20Transplant outside: Jul 8 to Jul 22Sow outdoors: Jul 8 to Jul 22
Start indoors: May 6 to May 20Transplant outside: Jun 24 to Jul 8
Sow outdoors: May 6 to May 27
Sow outdoors: May 6 to May 27Plant for fall: Jul 27 to Aug 17
Sow outdoors: May 13 to Jun 24Plant for fall: Aug 10 to Aug 31
Start indoors: May 20 to May 27Transplant outside: Jul 1 to Jul 8Sow outdoors: Jun 24 to Jul 8
Start indoors: May 20 to May 27Sow outdoors: Jun 24 to Jul 8
Start indoors: May 20 to May 27Sow outdoors: Jun 24 to Jul 8
Start indoors: May 20 to May 27Transplant outside: Jul 1 to Jul 15
Sow outdoors: May 27 to Jun 24
Sow outdoors: May 27 to Jun 24Plant for fall: Jul 13 to Jul 27
Sow outdoors: May 27 to Jun 17
Sow outdoors: Jun 3 to Jul 1
Sow outdoors: Jun 3 to Jun 24Plant for fall: Jul 27 to Aug 17
Sow outdoors: Jun 24 to Jul 15
Sow outdoors: Jun 24 to Jul 8
Transplant outside: Jul 1 to Jul 22
Plant for fall: Sep 7 to Oct 12
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Blue, AZ
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Mar 25 – Apr 8 | May 20 – Jun 3 | — | — |
| Peppers | Apr 8 – Apr 22 | Jul 1 – Jul 15 | — | — |
| Eggplant | Apr 8 – Apr 22 | Jul 1 – Jul 15 | — | — |
| Tomatoes | Apr 22 – May 6 | Jun 24 – Jul 8 | — | — |
| Lettuce | Apr 22 – May 6 | May 27 – Jun 10 | May 20 – Jun 24 | Jul 27 – Aug 24 |
| Kale | Apr 22 – May 6 | May 20 – Jun 3 | May 20 – Jun 3 | Jul 13 – Aug 3 |
| Broccoli | Apr 22 – May 6 | Jun 3 – Jun 17 | — | — |
| Cabbage | Apr 22 – May 6 | May 27 – Jun 10 | — | — |
| Cauliflower | Apr 22 – May 6 | Jun 3 – Jun 17 | — | — |
| Okra | May 6 – May 20 | Jul 8 – Jul 22 | Jul 8 – Jul 22 | — |
| Basil | May 6 – May 20 | Jun 24 – Jul 8 | — | — |
| Peas | — | — | May 6 – May 27 | — |
| Spinach | — | — | May 6 – May 27 | Jul 27 – Aug 17 |
| Radishes | — | — | May 13 – Jun 24 | Aug 10 – Aug 31 |
| Cucumbers | May 20 – May 27 | Jul 1 – Jul 8 | Jun 24 – Jul 8 | — |
| Zucchini & Summer Squash | May 20 – May 27 | — | Jun 24 – Jul 8 | — |
| Winter Squash & Pumpkins Warning: Your frost-free season is about 96 days, which is tight for winter squash & pumpkins (100+ days). Choose early varieties and use transplants or row covers. | May 20 – May 27 | — | Jun 24 – Jul 8 | — |
| Melons & Watermelon Warning: Your frost-free season is about 96 days, which is tight for melons & watermelon (85+ days). Choose early varieties and use transplants or row covers. | May 20 – May 27 | Jul 1 – Jul 15 | — | — |
| Carrots | — | — | May 27 – Jun 24 | — |
| Beets | — | — | May 27 – Jun 24 | Jul 13 – Jul 27 |
| Potatoes | — | — | May 27 – Jun 17 | — |
| Swiss Chard | — | — | Jun 3 – Jul 1 | — |
| Cilantro | — | — | Jun 3 – Jun 24 | Jul 27 – Aug 17 |
| Green Beans | — | — | Jun 24 – Jul 15 | — |
| Sweet Corn | — | — | Jun 24 – Jul 8 | — |
| Sweet Potatoes Warning: Your frost-free season is about 96 days, which is tight for sweet potatoes (100+ days). Choose early varieties and use transplants or row covers. | — | Jul 1 – Jul 22 | — | — |
| Garlic | — | — | — | Sep 7 – Oct 12 |
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 Luna Rs, NM weather station, 22 km away (elevation 7,051 ft (2,149 m)).
Frost dates near Blue
- Alpine Jun 15 · Sep 21
- Nutrioso Jun 15 · Sep 21
- Greer Jun 5 · Sep 29
- Eagar Jun 1 · Sep 26
- Clifton Feb 26 · Nov 23
- Springerville Jun 1 · Sep 26
- Morenci Feb 26 · Nov 23
- Mcnary May 20 · Oct 11
- Fort Apache May 22 · Oct 6
- Duncan Apr 24 · Oct 25
Frequently asked questions
When is the last frost in Blue, AZ?
The median last spring frost in Blue, AZ is June 17. There is still about a 10% chance of frost after July 1, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Blue, AZ?
The median first fall frost is September 21, with about a 10% chance of frost before September 8.
How long is the growing season in Blue, AZ?
About 96 days between the median last spring frost and first fall frost.
What planting zone is Blue, AZ?
Blue, AZ is in USDA hardiness zone 8a.