Frost dates 2026–2027

Frost dates for Moreno Valley, California

Median (50% chance) dates of the last and first 32°F frost, from NOAA 1991–2020 climate normals at Redlands, 7.9 mi away (close match).

Last spring frostJan 27
First fall frostDec 19
329 frost-free days
Last spring frostJan 271 year in 10 after Feb 28
First fall frostDec 191 year in 10 by Dec 1
Growing season329 daysbetween median 32°F dates
Hardiness zoneZone 9b25 to 30°F average extreme low

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Will it freeze in Moreno Valley in the next 7 nights?

No overnight lows at or below 32°F are forecast in Moreno Valley 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 Moreno Valley

Most years have no 28°F hard freeze at Redlands, 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 31 · Mar 2 · Apr 5 Nov 17 · Dec 2 · Dec 19 272 days
32°F freeze Dec 21 · Jan 27 · Feb 28 Dec 1 · Dec 19 · Jan 26 329 days
28°F hard freeze Dec 17 · Jan 7 · Feb 15 Dec 13 · Jan 1 · Feb 13 365 days
NOAA NCEI U.S. Climate Normals 1991–2020, station USC00047306. How to read these probabilities.

Average high temperature by month

1991–2020 normals at Redlands

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 Moreno Valley, CA come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Redlands (station USC00047306, elevation 1,410 ft), 7.9 mi from Moreno Valley. 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 Moreno Valley

CityDistanceLast spring frostFirst fall frost
Loma Linda, CA 8.7 mi Jan 27 Dec 19
Redlands, CA 9.3 mi Jan 27 Dec 19
Perris, CA 9.3 mi Jan 28 Dec 18
Grand Terrace, CA 9.9 mi rare rare
Calimesa, CA 9.9 mi Jan 27 Dec 19
Riverside, CA 11 mi Jan 9 Dec 25
Colton, CA 11 mi rare rare
Yucaipa, CA 12 mi Jan 27 Dec 19
Highland, CA 13 mi Jan 27 Dec 19
San Jacinto, CA 15 mi Jan 31 Dec 10

Frequently asked questions

When is the last frost in Moreno Valley?

On average, the last spring frost (32°F) in Moreno Valley is around January 27. In about 1 year in 10 it comes after February 28, and in 9 years in 10 it comes after December 21.

When is the first frost in Moreno Valley?

The first fall frost (32°F) usually arrives around December 19. There’s a 10% chance of a freeze by December 1 and a 90% chance by January 26.

Can it frost in Moreno Valley 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 2.

What growing zone is Moreno Valley?

Moreno Valley 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 92553. See growing zones in California.

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