Frost dates 2026–2027

Frost dates for Hesperia, California

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Hesperia 2E, 3.2 mi away (close match).

Last spring frostFeb 28
First fall frostDec 1
270 frost-free days
Last spring frostFeb 281 year in 10 after Apr 3
First fall frostDec 11 year in 10 by Nov 11
Growing season270 daysbetween median 32°F dates
Hardiness zoneZone 8b15 to 20°F average extreme low

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Will it freeze in Hesperia in the next 7 nights?

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

Tonight: forecast low 46°F. Above 36°F.

NWS forecast period: Thu, Nov 5, 6:00 PM PST to Fri, Nov 6, 6:00 AM PST.

No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.

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 Hesperia

The median first fall hard-freeze date (28°F) is December 14, from NOAA’s 1991–2020 Climate Normals at Hesperia 2E. 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 Mar 3 · Mar 31 · Apr 22 Oct 29 · Nov 16 · Dec 1 229 days
32°F freeze Feb 1 · Feb 28 · Apr 3 Nov 11 · Dec 1 · Dec 16 270 days
28°F hard freeze Dec 31 · Jan 30 · Mar 1 Nov 26 · Dec 14 · Jan 10 318 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00043937. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Hesperia 2E

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 Hesperia, CA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Hesperia 2E (station USC00043937, elevation 3,055 ft), 3.2 mi from Hesperia. 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 Hesperia

CityDistanceLast spring frostFirst fall frost
Victorville, CA 9.3 mi Mar 18 Nov 11
Apple Valley, CA 11 mi Mar 18 Nov 11
Adelanto, CA 14 mi Mar 18 Nov 11
San Bernardino, CA 18 mi Jan 27 Dec 19
Rialto, CA 20 mi rare rare
Highland, CA 21 mi Jan 27 Dec 19
Fontana, CA 22 mi rare rare
Rancho Cucamonga, CA 24 mi rare rare
Colton, CA 24 mi rare rare
Loma Linda, CA 25 mi Jan 27 Dec 19

Frequently asked questions

When is the last frost in Hesperia?

On average, the last spring frost (32°F) in Hesperia is around February 28. In about 1 year in 10 it comes after April 3, and in 9 years in 10 it comes after February 1.

When is the first frost in Hesperia?

The first fall frost (32°F) usually arrives around December 1. There’s a 10% chance of a freeze by November 11 and a 90% chance by December 16.

Can it frost in Hesperia 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 March 31.

What growing zone is Hesperia?

Hesperia is in USDA Plant Hardiness Zone 8b (average annual extreme minimum temperature 15 to 20°F), based on the 2023 USDA map for ZIP code 92345. See growing zones in California.

More: all California frost dates · California growing zones · UV index today in Hesperia · frost vs. freeze