Frost dates 2026–2027

Frost dates for Calipatria, California

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Brawley 2 SW, 15 mi away (close match).

Last spring frostJan 16
First fall frostDec 19
335 frost-free days
Last spring frostJan 161 year in 10 after Feb 17
First fall frostDec 191 year in 10 by Dec 2
Growing season335 daysbetween median 32°F dates
Hardiness zoneZone 9b25 to 30°F average extreme low

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Will it freeze in Calipatria in the next 7 nights?

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

Tonight: forecast low 56°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 Calipatria

Most years have no 28°F hard freeze at Brawley 2 SW, according to NOAA’s 1991–2020 Climate Normals. Check the short-term forecast above during cold snaps.

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 Jan 13 · Feb 10 · Feb 28 Nov 22 · Dec 6 · Dec 21 298 days
32°F freeze Dec 21 · Jan 16 · Feb 17 Dec 2 · Dec 19 · Jan 17 335 days
28°F hard freeze Dec 12 · Jan 2 · Feb 2 Dec 10 · Dec 29 · Jan 27 365 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00041048. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Brawley 2 SW

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 Calipatria, CA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Brawley 2 SW (station USC00041048, elevation -100 ft), 15 mi from Calipatria. 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 Calipatria

CityDistanceLast spring frostFirst fall frost
Brawley, CA 14 mi Jan 16 Dec 19
Imperial, CA 24 mi Jan 14 Dec 24
Holtville, CA 25 mi Jan 3 Dec 27
El Centro, CA 27 mi Jan 3 Dec 27
Calexico, CA 34 mi Jan 3 Dec 27
Coachella, CA 52 mi rare rare
La Quinta, CA 56 mi rare rare
Indio, CA 58 mi rare rare
Blythe, CA 60 mi Jan 25 Dec 12
Somerton, AZ 60 mi Jan 8 Dec 28

Frequently asked questions

When is the last frost in Calipatria?

On average, the last spring frost (32°F) in Calipatria is around January 16. In about 1 year in 10 it comes after February 17, and in 9 years in 10 it comes after December 21.

When is the first frost in Calipatria?

The first fall frost (32°F) usually arrives around December 19. There’s a 10% chance of a freeze by December 2 and a 90% chance by January 17.

Can it frost in Calipatria 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 February 10.

What growing zone is Calipatria?

Calipatria is in USDA Plant Hardiness Zone 9b (average annual extreme minimum temperature 25 to 30°F), based on the 2023 USDA map for ZIP code 92233. See growing zones in California.

More: all California frost dates · California growing zones · frost vs. freeze