Frost dates 2026–2027

Frost dates for Hemet, California

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at San Jacinto, 4.5 mi away (close match).

Last spring frostJan 31
First fall frostDec 10
315 frost-free days
Last spring frostJan 311 year in 10 after Feb 28
First fall frostDec 101 year in 10 by Nov 22
Growing season315 daysbetween median 32°F dates
Hardiness zoneZone 9b25 to 30°F average extreme low

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Will it freeze in Hemet in the next 7 nights?

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

Tonight: forecast low 52°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 Hemet

The median first fall hard-freeze date (28°F) is December 21, from NOAA’s 1991–2020 Climate Normals at San Jacinto. 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 Feb 6 · Mar 5 · Apr 8 Nov 5 · Nov 24 · Dec 12 260 days
32°F freeze Dec 31 · Jan 31 · Feb 28 Nov 22 · Dec 10 · Jan 6 315 days
28°F hard freeze Dec 11 · Jan 3 · Jan 29 Dec 2 · Dec 21 · Jan 15 359 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00047813. How to read these probabilities.

Average high temperature by month

1991–2020 normals at San Jacinto

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 Hemet, CA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: San Jacinto (station USC00047813, elevation 1,525 ft), 4.5 mi from Hemet. 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 Hemet

CityDistanceLast spring frostFirst fall frost
San Jacinto, CA 4.3 mi Jan 31 Dec 10
Beaumont, CA 9.9 mi Jan 31 Dec 10
Menifee, CA 11 mi Jan 28 Dec 18
Perris, CA 14 mi Jan 28 Dec 18
Canyon Lake, CA 16 mi Jan 28 Dec 18
Banning, CA 16 mi Jan 31 Dec 10
Murrieta, CA 16 mi rare rare
Wildomar, CA 17 mi Jan 28 Dec 18
Moreno Valley, CA 18 mi Jan 27 Dec 19
Calimesa, CA 18 mi Jan 27 Dec 19

Frequently asked questions

When is the last frost in Hemet?

On average, the last spring frost (32°F) in Hemet is around January 31. In about 1 year in 10 it comes after February 28, and in 9 years in 10 it comes after December 31.

When is the first frost in Hemet?

The first fall frost (32°F) usually arrives around December 10. There’s a 10% chance of a freeze by November 22 and a 90% chance by January 6.

Can it frost in Hemet 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 5.

What growing zone is Hemet?

Hemet 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 92545. See growing zones in California.

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