Frost dates for 87820Aragon, NM
The average last spring frost in Aragon is June 17 and the average first fall frost is September 21, giving a typical growing season of about 93 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Jun 17
- Average first fall frost
- Sep 21
- Growing season
- 93 days
Safer after Jul 1 (1-in-10 risk)
Possible by Sep 8 (1-in-10 risk)
Last frost typically in 233 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | — | — | 72 days | 100% |
| Frost / freeze (32°F) | Jun 5 · Jun 17 · Jul 1 | Sep 8 · Sep 21 · Oct 1 | 93 days | 100% |
| Hard freeze (28°F) | May 24 · Jun 7 · Jun 21 | Sep 18 · Sep 29 · Oct 8 | 112 days | 100% |
Planting calendar for Aragon
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | May 17 – Jul 23 |
| Tomatoes | Transplant outdoors | Jul 3 – Jun 1 |
| Peppers | Start seeds indoors | May 17 – Jun 17 |
| Peppers | Transplant outdoors | Jul 17 – Aug 17 |
| Eggplant | Start seeds indoors | Jun 3 – Jul 2 |
| Eggplant | Transplant outdoors | Jul 17 – Aug 17 |
| Cucumbers | Sow outdoors | Jul 17 – Jun 11 |
| Summer squash | Sow outdoors | Jul 3 – Aug 17 |
| Winter squash & pumpkins | Sow outdoors | Jul 17 – Aug 17 |
| Snap beans | Sow outdoors | Jul 3 – Jul 4 |
| Sweet corn | Sow outdoors | Jul 3 – Jun 1 |
| Watermelon & cantaloupe | Sow outdoors | Jul 17 – Aug 17 |
| Okra | Sow outdoors | Jul 10 – Aug 2 |
| Peas | Sow outdoors (spring) | May 17 – Jul 2 |
| Potatoes | Plant outdoors (spring) | May 17 – Jul 17 |
| Onions | Start seeds indoors (spring) | Apr 5 – May 2 |
| Onions | Transplant outdoors (spring) | Jun 3 – Jul 2 |
| Broccoli | Start seeds indoors (spring) | Apr 29 – Jun 2 |
| Broccoli | Transplant outdoors (spring) | Jun 3 – Jul 2 |
| Broccoli | Start seeds indoors (fall) | May 22 – Jun 1 |
| Broccoli | Transplant outdoors (fall) | Jun 21 – Jul 2 |
| Cabbage | Start seeds indoors (spring) | Apr 19 – May 17 |
| Cabbage | Transplant outdoors (spring) | May 17 – Jun 17 |
| Cabbage | Start seeds indoors (fall) | May 12 – Jun 11 |
| Cabbage | Transplant outdoors (fall) | Jun 11 – Jul 12 |
| Leaf lettuce | Sow outdoors (spring) | May 17 – Aug 2 |
| Leaf lettuce | Sow outdoors (fall) | Jun 11 – Jul 28 |
| Spinach | Sow outdoors (spring) | May 10 – Jun 23 |
| Spinach | Sow outdoors (fall) | Jun 28 – Aug 2 |
| Radishes | Sow outdoors (spring) | May 17 – Jul 7 |
| Radishes | Sow outdoors (fall) | Jun 11 – Aug 12 |
| Kale | Sow outdoors (spring) | Jun 3 – Jun 23 |
| Kale | Sow outdoors (fall) | Jun 4 – Jul 12 |
| Carrots | Sow outdoors (spring) | Jun 17 – Aug 2 |
| Carrots | Sow outdoors (fall) | May 12 – Jun 27 |
| Garlic | Plant outdoors (fall) | Sep 11 – Oct 12 |
Where these dates come from
ZIP code 87820 is matched to the NOAA station Luna Rs, NM, 37.2 km away, at 7,050 ft elevation (314 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Luna Rs, NM (used) | 7,050 ft | Jun 17 | Sep 21 |
| Reserve Rs, NM | 5,847 ft | May 30 | Oct 3 |
| Quemado, NM | 6,878 ft | Jun 1 | Sep 29 |
| Alpine, AZ | 8,050 ft | Jun 15 | Sep 21 |
Frost dates near Aragon
- Reserve, NM 87830 · last May 30, first Oct 3
- Luna, NM 87824 · last Jun 17, first Sep 21
- Quemado, NM 87829 · last Jun 1, first Sep 29
- Pie Town, NM 87827 · last Jun 1, first Sep 29
- Datil, NM 87821 · last May 19, first Oct 4
- Alpine, AZ 85920 · last Jun 15, first Sep 21
- Blue, AZ 85922 · last Jun 17, first Sep 21
- Nutrioso, AZ 85932 · last Jun 15, first Sep 21
Frequently asked questions
- When is the last frost in Aragon, NM?
- For ZIP code 87820, the average last spring frost (32°F) is June 17, based on NOAA 1991-2020 climate normals for the Luna Rs, NM weather station. There is a 1-in-10 chance of a frost after July 1.
- When is the first frost in Aragon, NM?
- The average first fall frost (32°F) is September 21. There is a 1-in-10 chance of frost by September 8, so tender plants are at risk from that point on.
- How long is the growing season in 87820?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 93 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.