Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

Planting zone for Yucca Valley, CA

Yucca Valley, CA is in USDA zone 9a across its 2 ZIP codes. The median last spring frost is March 14 and the first fall frost November 28.

Yucca Valley on the zone map

Outlined: its 1 ZIP code areas · tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone9a20 to 25 °F
ZIP codes2
Last frostMar 14
First frostNov 28
Growing season255 days

9a 2 ZIPs

Frost forecast — next 7 nights

live from the National Weather Service

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Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Yucca Valley, CA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 14median — 50% chance of a later frost
Safe for tender plantsApril 1only 10% chance of frost after
First fall frostNovember 28median — 10% chance by Nov 10
Growing season255 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 7 and returns around December 8.

From the NOAA station Yucca Valley, CA, elevation 3,248 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in Yucca Valley

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 31 – Feb 14
SpinachSow outdoors · Jan 31 – Feb 21
Broccoli, cabbageStart indoors · Jan 3 – Jan 17
Broccoli, cabbageTransplant · Feb 21 – Mar 7
Onion setsPlant outdoors · Feb 14 – Feb 28
PotatoesPlant outdoors · Feb 21 – Mar 7
LettuceSow outdoors · Feb 14 – Feb 28
Carrots, beetsSow outdoors · Feb 21 – Mar 7
TomatoesStart indoors · Jan 17 – Jan 31
TomatoesTransplant · Mar 21 – Apr 4
Peppers, eggplantStart indoors · Jan 3 – Jan 17
Peppers, eggplantTransplant · Mar 28 – Apr 11
BeansSow outdoors · Mar 21 – Apr 4
Sweet cornSow outdoors · Mar 21 – Apr 4
Cucumbers, squashSow outdoors · Mar 21 – Apr 4
Fall lettuce, spinachSow outdoors · Oct 3 – Oct 17
GarlicPlant cloves · Nov 14 – Dec 19
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 14) and first fall frost (Nov 28) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 92286 came on Jan 27 — 5 days earlier than the 1991–2020 average (Feb 1).

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Soil in Yucca Valley, CA

The soil mapped at the center of ZIP 92286 is Typic Torriorthents — gravelly sandy loam, somewhat excessively drained.

TextureGravelly sandy loamdrains and warms fast; dries out and needs more feeding
pH8.0alkaline; most vegetables like 6.0–7.0
DrainageSomewhat excessively drainednatural drainage class
Organic matter0.25%low — add compost
Hydrologic groupAwater soaks in fast
Farmland classNot prime farmlandUSDA classification

Map unit: Typic Torriorthents and Typic Haplargids; thermic fan piedmonts.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 92286; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Yucca Valley, CA

Summer high96 °Faverage high, July
Winter low34 °Faverage low, December
Hot days109days a year at 90 °F or more
Freezing nights31nights a year at 32 °F or less
Growing degree days5,224base 50 °F — the season’s usable heat
Longest day14 h 26 mindaylight on June 21
Shortest day9 h 52 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation6.3 inper year, rain and melted snow
Snowfall2 inper year

Average high and low, by month

20°30°40°50°60°70°80°90°100°110°32 °FJanuary: average high 58 °F, low 38 °F 58°38° JanFebruary: average high 61 °F, low 39 °F 61°39° FebMarch: average high 67 °F, low 40 °F 67°40° MarApril: average high 73 °F, low 47 °F 73°47° AprMay: average high 82 °F, low 52 °F 82°52° MayJune: average high 91 °F, low 59 °F 91°59° JunJuly: average high 96 °F, low 66 °F 96°66° JulAugust: average high 96 °F, low 68 °F 96°68° AugSeptember: average high 89 °F, low 60 °F 89°60° SepOctober: average high 80 °F, low 50 °F 80°50° OctNovember: average high 66 °F, low 41 °F 66°41° NovDecember: average high 58 °F, low 34 °F 58°34° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″January: 1.41 in precipitation 1.4 JanFebruary: 1.22 in precipitation, 0.7 in snowfall 1.2❄1 FebMarch: 0.78 in precipitation 0.8 MarApril: 0.25 in precipitation 0.3 AprMay: 0.06 in precipitation 0.1 MayJune: 0.00 in precipitation 0.0 JunJuly: 0.46 in precipitation 0.5 JulAugust: 0.17 in precipitation 0.2 AugSeptember: 0.15 in precipitation 0.1 SepOctober: 0.61 in precipitation 0.6 OctNovember: 0.27 in precipitation, 0.1 in snowfall 0.3 NovDecember: 0.87 in precipitation, 0.9 in snowfall 0.9❄1 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Yucca Valley, CA (4 mi away); precipitation: Yucca Valley, CA (4 mi away). Daylight is calculated from latitude.

ZIP codes in Yucca Valley

922849a
20 to 25 °F
922869a
20 to 25 °F

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Questions about Yucca Valley

What planting zone is Yucca Valley, CA?

Yucca Valley, CA is in USDA hardiness zone 9a on the 2023 map (9a: 20 to 25 °F).

When is the last frost in Yucca Valley, CA?

The median last spring frost is March 14 and the median first fall frost is November 28 (NOAA 1991–2020 normals, Yucca Valley station).

When can I plant a garden in Yucca Valley, CA?

Cool-season crops like peas and spinach go in around Jan 31 – Feb 21; tomatoes, peppers, beans and squash after about Mar 21, once frost risk has passed.

What kind of onions grow in Yucca Valley, CA?

Intermediate onions: the longest day is 14 h 26 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

How much rain and snow does Yucca Valley, CA get?

About 6.3 inches of precipitation a year and 2 inches of snowfall (NOAA 1991–2020 normals).