Frost dates 2026–2027

Frost dates for Blythe, California

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Blythe, 3.1 mi away (close match).

Last spring frostJan 25
First fall frostDec 12
325 frost-free days
Last spring frostJan 251 year in 10 after Feb 24
First fall frostDec 121 year in 10 by Nov 28
Growing season325 daysbetween median 32°F dates
Hardiness zoneZone 9b25 to 30°F average extreme low

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Will it freeze in Blythe in the next 7 nights?

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

Tonight: forecast low 53°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 Blythe

The median first fall hard-freeze date (28°F) is December 22, from NOAA’s 1991–2020 Climate Normals at Blythe. 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 Jan 25 · Feb 21 · Mar 10 Nov 16 · Dec 1 · Dec 16 283 days
32°F freeze Dec 29 · Jan 25 · Feb 24 Nov 28 · Dec 12 · Jan 3 325 days
28°F hard freeze Dec 10 · Dec 30 · Jan 30 Dec 5 · Dec 22 · Jan 11 359 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00040924. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Blythe

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 Blythe, CA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Blythe (station USC00040924, elevation 268 ft), 3.1 mi from Blythe. 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 Blythe

CityDistanceLast spring frostFirst fall frost
Calipatria, CA 60 mi Jan 16 Dec 19
Lake Havasu City, AZ 61 mi rare rare
Brawley, CA 70 mi Jan 16 Dec 19
Holtville, CA 73 mi Jan 3 Dec 27
Somerton, AZ 73 mi Jan 8 Dec 28
Imperial, CA 79 mi Jan 14 Dec 24
Yuma, AZ 79 mi Jan 8 Dec 28
El Centro, CA 81 mi Jan 3 Dec 27
San Luis, AZ 81 mi Jan 8 Dec 28
Calexico, CA 84 mi Jan 3 Dec 27

Frequently asked questions

When is the last frost in Blythe?

On average, the last spring frost (32°F) in Blythe is around January 25. In about 1 year in 10 it comes after February 24, and in 9 years in 10 it comes after December 29.

When is the first frost in Blythe?

The first fall frost (32°F) usually arrives around December 12. There’s a 10% chance of a freeze by November 28 and a 90% chance by January 3.

Can it frost in Blythe 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 21.

What growing zone is Blythe?

Blythe 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 92225. See growing zones in California.

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