Checking current alerts… View NWS forecast and alerts.
Will it freeze in Belen in the next 7 nights?
No overnight lows at or below 32°F are forecast in Belen during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 35°F. Frost possible.
NWS forecast period: Thu, Nov 5, 6:00 PM MST to Fri, Nov 6, 6:00 AM MST.
2 of the next 7 nights are forecast at 36°F or colder, cold enough for frost on exposed plants.
- Tonight 35°F Frost possible · Partly Cloudy
- Fri, Nov 6 41°F Above 36°F · Slight Chance Rain Showers then Mostly Cloudy
- Sat, Nov 7 34°F Frost possible · Mostly Clear
- Sun, Nov 8 37°F Above 36°F · Clear
- Mon, Nov 9 39°F Above 36°F · Mostly Clear
- Tue, Nov 10 39°F Above 36°F · Mostly Clear
- Wed, Nov 11 39°F Above 36°F · Mostly Clear
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Belen
The median first fall hard-freeze date (28°F) is October 31, from NOAA’s 1991–2020 Climate Normals at Los Lunas 3 Ssw. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | Apr 22 · May 3 · May 16 | Sep 30 · Oct 10 · Oct 23 | 158 days |
| 32°F freeze | Apr 9 · Apr 23 · May 6 | Oct 7 · Oct 21 · Nov 2 | 178 days |
| 28°F hard freeze | Mar 24 · Apr 8 · Apr 26 | Oct 18 · Oct 31 · Nov 10 | 201 days |
Average high temperature by month
1991–2020 normals at Los Lunas 3 Ssw
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Belen, NM come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Los Lunas 3 Ssw (station USC00295150, elevation 4,840 ft), 2.7 mi from Belen. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Belen
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Los Lunas, NM | 2.5 mi | Apr 23 | Oct 21 |
| Albuquerque, NM | 25 mi | Apr 23 | Oct 20 |
| Los Ranchos de Albuquerque, NM | 29 mi | Apr 23 | Oct 20 |
| Corrales, NM | 34 mi | Apr 8 | Nov 1 |
| Rio Rancho, NM | 37 mi | Apr 8 | Nov 1 |
| Bernalillo, NM | 40 mi | Apr 16 | Oct 23 |
| Edgewood, NM | 42 mi | May 9 | Oct 9 |
| Socorro, NM | 50 mi | Apr 16 | Oct 25 |
| Grants, NM | 64 mi | May 17 | Oct 3 |
| Santa Fe, NM | 78 mi | May 14 | Oct 6 |
Frequently asked questions
When is the last frost in Belen?
On average, the last spring frost (32°F) in Belen is around April 23. In about 1 year in 10 it comes after May 6, and in 9 years in 10 it comes after April 9.
When is the first frost in Belen?
The first fall frost (32°F) usually arrives around October 21. There’s a 10% chance of a freeze by October 7 and a 90% chance by November 2.
Can it frost in Belen after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after May 3.
What growing zone is Belen?
Belen is in USDA Plant Hardiness Zone 7a (average annual extreme minimum temperature 0 to 5°F), based on the 2023 USDA map for ZIP code 87060. See growing zones in New Mexico.
More: all New Mexico frost dates · New Mexico growing zones · frost vs. freeze