Aztec, NM frost dates
Last spring frostMay 12median date
First fall frostOct 6median date
Growing season147 daysfrost-free
Hardiness zone6bZone 6b
How Aztec compares
- In 8 years out of 10, the last spring frost in Aztec falls between April 29 and May 30, a 31-day window. The first fall frost falls between September 24 and October 19.
- The median last frost is 9 days later than the New Mexico median of May 3.
- Its 147-day growing season is longer than 32% of the 349 New Mexico places with a regular frost season (state median 164 days).
- The last frost is 20 days later than the zone 6b median of Apr 22. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6b chart.
- The weather station records an average of 158 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 29 |
| 50% (median) | May 12 |
| 10% (safe for tender plants) | May 30 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 24 |
| 50% (median) | October 6 |
| 90% (late) | October 19 |
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 Aztec, NM
Aztec, NM frost dates — last frost May 12, first frost Oct 6, zone 6b. whenisthelastfrost.com
Crop
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Start indoors: Feb 17 to Mar 3Transplant outside: Apr 14 to Apr 28
Start indoors: Mar 3 to Mar 17Transplant outside: May 26 to Jun 9
Start indoors: Mar 3 to Mar 17Transplant outside: May 26 to Jun 9
Start indoors: Mar 17 to Mar 31Transplant outside: May 19 to Jun 2
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 21 to May 5Sow outdoors: Apr 14 to May 19Plant for fall: Aug 11 to Sep 8
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 14 to Apr 28Sow outdoors: Apr 14 to Apr 28Plant for fall: Jul 28 to Aug 18
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 28 to May 12Plant for fall: Jun 30 to Jul 21
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 21 to May 5Plant for fall: Jun 30 to Jul 21
Start indoors: Mar 17 to Mar 31Transplant outside: Apr 28 to May 12Plant for fall: Jun 30 to Jul 21
Start indoors: Mar 31 to Apr 14Transplant outside: Jun 2 to Jun 16Sow outdoors: Jun 2 to Jun 16
Start indoors: Mar 31 to Apr 14Transplant outside: May 19 to Jun 2
Sow outdoors: Mar 31 to Apr 21Plant for fall: Jul 14 to Aug 4
Sow outdoors: Mar 31 to Apr 21Plant for fall: Aug 11 to Sep 1
Sow outdoors: Apr 7 to May 19Plant for fall: Aug 25 to Sep 15
Start indoors: Apr 14 to Apr 21Transplant outside: May 26 to Jun 2Sow outdoors: May 19 to Jun 2Plant for fall: Jul 21 to Aug 4
Start indoors: Apr 14 to Apr 21Sow outdoors: May 19 to Jun 2Plant for fall: Jul 28 to Aug 11
Start indoors: Apr 14 to Apr 21Sow outdoors: May 19 to Jun 2
Start indoors: Apr 14 to Apr 21Transplant outside: May 26 to Jun 9
Sow outdoors: Apr 21 to May 19Plant for fall: Jul 14 to Jul 28
Sow outdoors: Apr 21 to May 19Plant for fall: Jul 28 to Aug 11
Sow outdoors: Apr 21 to May 12
Sow outdoors: Apr 28 to May 26Plant for fall: Jul 28 to Aug 11
Sow outdoors: Apr 28 to May 19Plant for fall: Aug 11 to Sep 1
Sow outdoors: May 19 to Jun 9Plant for fall: Jul 21 to Aug 4
Sow outdoors: May 19 to Jun 2
Transplant outside: May 26 to Jun 16
Plant for fall: Sep 22 to Oct 27
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Aztec, NM
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 17 – Mar 3 | Apr 14 – Apr 28 | — | — |
| Peppers | Mar 3 – Mar 17 | May 26 – Jun 9 | — | — |
| Eggplant | Mar 3 – Mar 17 | May 26 – Jun 9 | — | — |
| Tomatoes | Mar 17 – Mar 31 | May 19 – Jun 2 | — | — |
| Lettuce | Mar 17 – Mar 31 | Apr 21 – May 5 | Apr 14 – May 19 | Aug 11 – Sep 8 |
| Kale | Mar 17 – Mar 31 | Apr 14 – Apr 28 | Apr 14 – Apr 28 | Jul 28 – Aug 18 |
| Broccoli | Mar 17 – Mar 31 | Apr 28 – May 12 | — | Jun 30 – Jul 21 |
| Cabbage | Mar 17 – Mar 31 | Apr 21 – May 5 | — | Jun 30 – Jul 21 |
| Cauliflower | Mar 17 – Mar 31 | Apr 28 – May 12 | — | Jun 30 – Jul 21 |
| Okra | Mar 31 – Apr 14 | Jun 2 – Jun 16 | Jun 2 – Jun 16 | — |
| Basil | Mar 31 – Apr 14 | May 19 – Jun 2 | — | — |
| Peas | — | — | Mar 31 – Apr 21 | Jul 14 – Aug 4 |
| Spinach | — | — | Mar 31 – Apr 21 | Aug 11 – Sep 1 |
| Radishes | — | — | Apr 7 – May 19 | Aug 25 – Sep 15 |
| Cucumbers | Apr 14 – Apr 21 | May 26 – Jun 2 | May 19 – Jun 2 | Jul 21 – Aug 4 |
| Zucchini & Summer Squash | Apr 14 – Apr 21 | — | May 19 – Jun 2 | Jul 28 – Aug 11 |
| Winter Squash & Pumpkins | Apr 14 – Apr 21 | — | May 19 – Jun 2 | — |
| Melons & Watermelon | Apr 14 – Apr 21 | May 26 – Jun 9 | — | — |
| Carrots | — | — | Apr 21 – May 19 | Jul 14 – Jul 28 |
| Beets | — | — | Apr 21 – May 19 | Jul 28 – Aug 11 |
| Potatoes | — | — | Apr 21 – May 12 | — |
| Swiss Chard | — | — | Apr 28 – May 26 | Jul 28 – Aug 11 |
| Cilantro | — | — | Apr 28 – May 19 | Aug 11 – Sep 1 |
| Green Beans | — | — | May 19 – Jun 9 | Jul 21 – Aug 4 |
| Sweet Corn | — | — | May 19 – Jun 2 | — |
| Sweet Potatoes | — | May 26 – Jun 16 | — | — |
| Garlic | — | — | — | Sep 22 – Oct 27 |
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 Aztec Ruins Nm, NM weather station, 2 km away (elevation 5,643 ft (1,720 m)).
Frost dates near Aztec
- Flora Vista May 12 · Oct 6
- Farmington May 2 · Oct 13
- Bloomfield Apr 23 · Oct 19
- Blanco Apr 23 · Oct 19
- La Plata May 12 · Oct 6
- Kirtland May 12 · Oct 4
- Navajo Dam Apr 27 · Oct 19
- Fruitland May 12 · Oct 4
- Waterflow May 12 · Oct 4
- Shiprock May 12 · Oct 4
Frequently asked questions
When is the last frost in Aztec, NM?
The median last spring frost in Aztec, NM is May 12. There is still about a 10% chance of frost after May 30, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Aztec, NM?
The median first fall frost is October 6, with about a 10% chance of frost before September 24.
How long is the growing season in Aztec, NM?
About 147 days between the median last spring frost and first fall frost.
What planting zone is Aztec, NM?
Aztec, NM is in USDA hardiness zone 6b.