Frost dates for 85628 — Nogales, AZ
Last spring frostApr 16median date
First fall frostNov 2median date
Growing season200 daysfrost-free
Hardiness zone8bZone 8b
How Nogales compares
- In 8 years out of 10, the last spring frost in Nogales falls between March 28 and May 4, a 37-day window. The first fall frost falls between October 19 and November 16.
- The median last frost is the same as the Arizona median of Apr 16.
- Its 200-day growing season is longer than 50% of the 193 Arizona places with a regular frost season (state median 197 days).
- The last frost is 31 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 92 nights a year at or below 32°F.
- Nearby Tucson, AZ, 77 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) | March 28 |
| 50% (median) | April 16 |
| 10% (safe for tender plants) | May 4 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 19 |
| 50% (median) | November 2 |
| 90% (late) | November 16 |
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 Nogales, AZ
Frost dates for 85628 — Nogales, AZ — last frost Apr 16, first frost Nov 2, zone 8b. whenisthelastfrost.com
Crop
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Start indoors: Jan 22 to Feb 5Transplant outside: Mar 19 to Apr 2
Start indoors: Feb 5 to Feb 19Transplant outside: Apr 30 to May 14
Start indoors: Feb 5 to Feb 19Transplant outside: Apr 30 to May 14
Start indoors: Feb 19 to Mar 5Transplant outside: Apr 23 to May 7
Start indoors: Feb 19 to Mar 5Transplant outside: Mar 26 to Apr 9Sow outdoors: Mar 19 to Apr 23Plant for fall: Sep 7 to Oct 5
Start indoors: Feb 19 to Mar 5Transplant outside: Mar 19 to Apr 2Sow outdoors: Mar 19 to Apr 2Plant for fall: Aug 24 to Sep 14
Start indoors: Feb 19 to Mar 5Transplant outside: Apr 2 to Apr 16Plant for fall: Jul 27 to Aug 17
Start indoors: Feb 19 to Mar 5Transplant outside: Mar 26 to Apr 9Plant for fall: Jul 27 to Aug 17
Start indoors: Feb 19 to Mar 5Transplant outside: Apr 2 to Apr 16Plant for fall: Jul 27 to Aug 17
Start indoors: Mar 5 to Mar 19Transplant outside: May 7 to May 21Sow outdoors: May 7 to May 21
Start indoors: Mar 5 to Mar 19Transplant outside: Apr 23 to May 7
Sow outdoors: Mar 5 to Mar 26Plant for fall: Aug 10 to Aug 31
Sow outdoors: Mar 5 to Mar 26Plant for fall: Sep 7 to Sep 28
Sow outdoors: Mar 12 to Apr 23Plant for fall: Sep 21 to Oct 12
Start indoors: Mar 19 to Mar 26Transplant outside: Apr 30 to May 7Sow outdoors: Apr 23 to May 7Plant for fall: Aug 17 to Aug 31
Start indoors: Mar 19 to Mar 26Sow outdoors: Apr 23 to May 7Plant for fall: Aug 24 to Sep 7
Start indoors: Mar 19 to Mar 26Sow outdoors: Apr 23 to May 7
Start indoors: Mar 19 to Mar 26Transplant outside: Apr 30 to May 14
Sow outdoors: Mar 26 to Apr 23Plant for fall: Aug 10 to Aug 24
Sow outdoors: Mar 26 to Apr 23Plant for fall: Aug 24 to Sep 7
Sow outdoors: Mar 26 to Apr 16
Sow outdoors: Apr 2 to Apr 30Plant for fall: Aug 24 to Sep 7
Sow outdoors: Apr 2 to Apr 23Plant for fall: Sep 7 to Sep 28
Sow outdoors: Apr 23 to May 14Plant for fall: Aug 17 to Aug 31
Sow outdoors: Apr 23 to May 7
Transplant outside: Apr 30 to May 21
Plant for fall: Oct 19 to Nov 23
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Nogales, AZ
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 22 – Feb 5 | Mar 19 – Apr 2 | — | — |
| Peppers | Feb 5 – Feb 19 | Apr 30 – May 14 | — | — |
| Eggplant | Feb 5 – Feb 19 | Apr 30 – May 14 | — | — |
| Tomatoes | Feb 19 – Mar 5 | Apr 23 – May 7 | — | — |
| Lettuce | Feb 19 – Mar 5 | Mar 26 – Apr 9 | Mar 19 – Apr 23 | Sep 7 – Oct 5 |
| Kale | Feb 19 – Mar 5 | Mar 19 – Apr 2 | Mar 19 – Apr 2 | Aug 24 – Sep 14 |
| Broccoli | Feb 19 – Mar 5 | Apr 2 – Apr 16 | — | Jul 27 – Aug 17 |
| Cabbage | Feb 19 – Mar 5 | Mar 26 – Apr 9 | — | Jul 27 – Aug 17 |
| Cauliflower | Feb 19 – Mar 5 | Apr 2 – Apr 16 | — | Jul 27 – Aug 17 |
| Okra | Mar 5 – Mar 19 | May 7 – May 21 | May 7 – May 21 | — |
| Basil | Mar 5 – Mar 19 | Apr 23 – May 7 | — | — |
| Peas | — | — | Mar 5 – Mar 26 | Aug 10 – Aug 31 |
| Spinach | — | — | Mar 5 – Mar 26 | Sep 7 – Sep 28 |
| Radishes | — | — | Mar 12 – Apr 23 | Sep 21 – Oct 12 |
| Cucumbers | Mar 19 – Mar 26 | Apr 30 – May 7 | Apr 23 – May 7 | Aug 17 – Aug 31 |
| Zucchini & Summer Squash | Mar 19 – Mar 26 | — | Apr 23 – May 7 | Aug 24 – Sep 7 |
| Winter Squash & Pumpkins | Mar 19 – Mar 26 | — | Apr 23 – May 7 | — |
| Melons & Watermelon | Mar 19 – Mar 26 | Apr 30 – May 14 | — | — |
| Carrots | — | — | Mar 26 – Apr 23 | Aug 10 – Aug 24 |
| Beets | — | — | Mar 26 – Apr 23 | Aug 24 – Sep 7 |
| Potatoes | — | — | Mar 26 – Apr 16 | — |
| Swiss Chard | — | — | Apr 2 – Apr 30 | Aug 24 – Sep 7 |
| Cilantro | — | — | Apr 2 – Apr 23 | Sep 7 – Sep 28 |
| Green Beans | — | — | Apr 23 – May 14 | Aug 17 – Aug 31 |
| Sweet Corn | — | — | Apr 23 – May 7 | — |
| Sweet Potatoes | — | Apr 30 – May 21 | — | — |
| Garlic | — | — | — | Oct 19 – Nov 23 |
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 Nogales 6 N, AZ weather station, 10 km away (elevation 3,461 ft (1,055 m)).
ZIP codes in Nogales: 85621 85628 85662
Frost dates near Nogales
- Tumacacori Apr 5 · Nov 10
- Tubac Apr 5 · Nov 10
- Rio Rico Apr 5 · Nov 10
- Patagonia Apr 23 · Oct 30
- Amado Apr 5 · Nov 10
- Sonoita Mar 28 · Nov 21
- Green Valley Feb 25 · Nov 27
- Elgin Apr 18 · Nov 1
Frequently asked questions
When is the last frost in Nogales, AZ?
The median last spring frost in Nogales, AZ is April 16. There is still about a 10% chance of frost after May 4, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Nogales, AZ?
The median first fall frost is November 2, with about a 10% chance of frost before October 19.
How long is the growing season in Nogales, AZ?
About 200 days between the median last spring frost and first fall frost.
What planting zone is Nogales, AZ?
Nogales, AZ is in USDA hardiness zone 8b.