Last spring frost
Apr 29
Frost Dates for Ojo Amarillo, NM
First fall frost
Oct 15
Growing season
167 days
Hardiness zone
7a
In an average year around Ojo Amarillo, NM, the last spring frost (32°F) is about Apr 29 and the first fall frost is about Oct 15, giving roughly a 167-day growing season. To be safe most years, wait until Apr 15 before setting out tender plants.
Last spring frost
Dates the last frost of spring typically ends. Plant tender crops after the risk has passed for your comfort level.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | May 29 | May 12 | Apr 28 |
| Freeze (32°F) | May 13 | Apr 29 | Apr 15 |
| Hard (28°F) | May 2 | Apr 17 | Mar 31 |
| Severe (24°F) | Apr 20 | Apr 1 | Mar 12 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 29 | May 23 | May 19 | May 15 | May 12 | May 9 | May 5 | May 2 | Apr 28 |
| 32°F | May 13 | May 8 | May 4 | May 1 | Apr 29 | Apr 27 | Apr 24 | Apr 20 | Apr 15 |
| 28°F | May 2 | Apr 27 | Apr 24 | Apr 20 | Apr 17 | Apr 13 | Apr 9 | Apr 5 | Mar 31 |
| 24°F | Apr 20 | Apr 13 | Apr 8 | Apr 4 | Apr 1 | Mar 29 | Mar 23 | Mar 18 | Mar 12 |
| 20°F | Apr 3 | Mar 27 | Mar 20 | Mar 16 | Mar 11 | Mar 8 | Mar 4 | Feb 28 | Feb 21 |
| 16°F | Mar 12 | Mar 8 | Mar 4 | Feb 28 | Feb 24 | Feb 19 | Feb 15 | Feb 10 | Feb 2 |
First fall frost
Dates the first frost of fall typically arrives. Count back by a crop's days-to-maturity to know your planting cutoff.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Sep 24 | Oct 7 | Oct 20 |
| Freeze (32°F) | Oct 1 | Oct 15 | Oct 29 |
| Hard (28°F) | Oct 11 | Oct 26 | Nov 10 |
| Severe (24°F) | Oct 21 | Nov 5 | Nov 19 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 24 | Sep 28 | Oct 2 | Oct 4 | Oct 7 | Oct 10 | Oct 12 | Oct 16 | Oct 20 |
| 32°F | Oct 1 | Oct 6 | Oct 9 | Oct 12 | Oct 15 | Oct 18 | Oct 21 | Oct 24 | Oct 29 |
| 28°F | Oct 11 | Oct 16 | Oct 19 | Oct 23 | Oct 26 | Oct 29 | Nov 1 | Nov 4 | Nov 10 |
| 24°F | Oct 21 | Oct 26 | Oct 30 | Nov 2 | Nov 5 | Nov 8 | Nov 11 | Nov 14 | Nov 19 |
| 20°F | Oct 30 | Nov 5 | Nov 8 | Nov 12 | Nov 15 | Nov 17 | Nov 20 | Nov 23 | Nov 28 |
| 16°F | Nov 8 | Nov 14 | Nov 18 | Nov 20 | Nov 23 | Nov 26 | Nov 29 | Dec 3 | Dec 9 |
Growing season is measured at 32°F with about 50% probability. Hardiness zone from the 2023 USDA map; frost normals from NOAA 1991-2020.
Where this data comes from
@endif These dates are computed from the nearest official weather station with long-term records: Farmington Ag Sci Cnt, Nm, about 10.7 miles away@if(!empty($station['elevation_ft'])), at 5,625 ft elevation. The further the station and the greater the elevation difference from your yard, the more your local frost timing can vary.
How we calculate these dates
Frost and freeze dates come from the NOAA 1991–2020 U.S. Climate Normals, the National Oceanic and Atmospheric Administration's 30-year averages for each weather station. A date shown at the 50% level is the median: in half of years the frost falls on or before it. The 10% and 90% columns show the early and late ends of the range, so you can plant on the odds you're comfortable with. These are long-term averages, not a forecast for this year - always check your local outlook before planting.
Source: NOAA National Centers for Environmental Information, 1991–2020 Climate Normals (public domain). Harman is not affiliated with or endorsed by NOAA.
Frequently asked questions
When is the last frost in Ojo Amarillo, NM?
On average, the last spring frost (32°F) around Ojo Amarillo, NM is about Apr 29. In cooler years it can run later, so for a safer bet many gardeners wait until Apr 15.
When is the first frost in the fall?
The first fall frost around Ojo Amarillo, NM typically arrives about Oct 15. Count back by a crop's days to maturity to find the latest date you can plant it.
When can I plant tomatoes and other tender crops?
Tender crops like tomatoes, peppers and basil are damaged by frost, so wait until the last spring frost has passed - around Apr 29 on average, or Apr 15 to be safe most years.
How long is the growing season here?
The frost-free growing season (between the last spring and first fall 32°F frost) is about 167 days in a typical year.
Are these dates a forecast for this year?
No. They are 30-year averages from the NOAA 1991–2020 Climate Normals, not a prediction for the current year. Use them for planning and always check your local weather forecast before planting or protecting crops.
Local weather for 87416 Planting calendar → New Mexico frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026