Frost dates 2026–2027

Frost dates for Bernalillo, New Mexico

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Rio Rancho #1, 4.2 mi away (close match).

Last spring frostApr 16
First fall frostOct 23
191 frost-free days
Last spring frostApr 161 year in 10 after May 2
First fall frostOct 231 year in 10 by Oct 12
Growing season191 daysbetween median 32°F dates
Hardiness zoneZone 7b5 to 10°F average extreme low

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Will it freeze in Bernalillo in the next 7 nights?

No overnight lows at or below 32°F are forecast in Bernalillo during the next 7 nights in the available NWS frost forecast.

Tonight: forecast low 36°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.

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 Bernalillo

The median first fall hard-freeze date (28°F) is November 2, from NOAA’s 1991–2020 Climate Normals at Rio Rancho #1. This is the 50% probability date, not a forecast for this year.

TemperatureLast 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 16 · Apr 29 · May 12 Oct 4 · Oct 16 · Oct 26 169 days
32°F freeze Apr 2 · Apr 16 · May 2 Oct 12 · Oct 23 · Nov 5 191 days
28°F hard freeze Mar 12 · Mar 30 · Apr 15 Oct 20 · Nov 2 · Nov 15 218 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00297477. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Rio Rancho #1

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 Bernalillo, NM come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Rio Rancho #1 (station USC00297477, elevation 5,230 ft), 4.2 mi from Bernalillo. 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 Bernalillo

CityDistanceLast spring frostFirst fall frost
Corrales, NM 6.2 mi Apr 8 Nov 1
Rio Rancho, NM 8.1 mi Apr 8 Nov 1
Los Ranchos de Albuquerque, NM 12 mi Apr 23 Oct 20
Albuquerque, NM 16 mi Apr 23 Oct 20
Edgewood, NM 22 mi May 9 Oct 9
Los Lunas, NM 38 mi Apr 23 Oct 21
Santa Fe, NM 40 mi May 14 Oct 6
Belen, NM 40 mi Apr 23 Oct 21
Española, NM 55 mi May 11 Oct 6
Grants, NM 73 mi May 17 Oct 3

Frequently asked questions

When is the last frost in Bernalillo?

On average, the last spring frost (32°F) in Bernalillo is around April 16. In about 1 year in 10 it comes after May 2, and in 9 years in 10 it comes after April 2.

When is the first frost in Bernalillo?

The first fall frost (32°F) usually arrives around October 23. There’s a 10% chance of a freeze by October 12 and a 90% chance by November 5.

Can it frost in Bernalillo 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 April 29.

What growing zone is Bernalillo?

Bernalillo is in USDA Plant Hardiness Zone 7b (average annual extreme minimum temperature 5 to 10°F), based on the 2023 USDA map for ZIP code 87004. See growing zones in New Mexico.

More: all New Mexico frost dates · New Mexico growing zones · frost vs. freeze