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

Planting zone for 92285 — Landers, CA

ZIP code 92285 (Landers, San Bernardino County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is March 1 and the first fall frost November 29.

Where ZIP 92285 is

Outlined: the ZIP code area · 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
Coldest night−6.7 to −3.9 °C
Last frostMar 1
First frostNov 29
2012 zone9a

Same zone as on the 2012 map. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 9a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Landers, CA…

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 Landers, CA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 1median — 50% chance of a later frost
Safe for tender plantsMarch 29only 10% chance of frost after
First fall frostNovember 29median — 10% chance by Nov 11
Growing season271 daysfrost-free, median

A hard freeze (28 °F) usually ends around January 30 and returns around December 10.

From the NOAA station Johnson Valley, CA — 2 miles away, elevation 3,166 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 92285

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 18 – Feb 1
SpinachSow outdoors · Jan 18 – Feb 8
Broccoli, cabbageStart indoors · Dec 21 – Jan 4
Broccoli, cabbageTransplant · Feb 8 – Feb 22
Onion setsPlant outdoors · Feb 1 – Feb 15
PotatoesPlant outdoors · Feb 8 – Feb 22
LettuceSow outdoors · Feb 1 – Feb 15
Carrots, beetsSow outdoors · Feb 8 – Feb 22
TomatoesStart indoors · Jan 4 – Jan 18
TomatoesTransplant · Mar 8 – Mar 22
Peppers, eggplantStart indoors · Dec 21 – Jan 4
Peppers, eggplantTransplant · Mar 15 – Mar 29
BeansSow outdoors · Mar 8 – Mar 22
Sweet cornSow outdoors · Mar 8 – Mar 22
Cucumbers, squashSow outdoors · Mar 8 – Mar 22
Fall lettuce, spinachSow outdoors · Oct 4 – Oct 18
GarlicPlant cloves · Nov 15 – Dec 20
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 1) and first fall frost (Nov 29) 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 92285 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 Landers, CA

The soil mapped at the center of ZIP 92285 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 92285; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Landers, CA

Summer high97 °Faverage high, July
Winter low35 °Faverage low, December
Hot days110days a year at 90 °F or more
Freezing nights28nights a year at 32 °F or less
Growing degree days5,445base 50 °F — the season’s usable heat
Longest day14 h 27 mindaylight on June 21
Shortest day9 h 51 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation5.6 inper year, rain and melted snow

Average high and low, by month

20°30°40°50°60°70°80°90°100°110°32 °FJanuary: average high 57 °F, low 38 °F 57°38° JanFebruary: average high 60 °F, low 39 °F 60°39° FebMarch: average high 67 °F, low 42 °F 67°42° MarApril: average high 74 °F, low 47 °F 74°47° AprMay: average high 82 °F, low 54 °F 82°54° MayJune: average high 92 °F, low 63 °F 92°63° JunJuly: average high 97 °F, low 69 °F 97°69° JulAugust: average high 97 °F, low 69 °F 97°69° AugSeptember: average high 90 °F, low 62 °F 90°62° SepOctober: average high 78 °F, low 52 °F 78°52° OctNovember: average high 65 °F, low 42 °F 65°42° NovDecember: average high 55 °F, low 35 °F 55°35° Dec

Precipitation by month inches

0″1″2″January: 1.36 in precipitation 1.4 JanFebruary: 1.28 in precipitation 1.3 FebMarch: 0.51 in precipitation 0.5 MarApril: 0.30 in precipitation 0.3 AprMay: 0.16 in precipitation 0.2 MayJune: 0.03 in precipitation 0.0 JunJuly: 0.30 in precipitation 0.3 JulAugust: 0.27 in precipitation 0.3 AugSeptember: 0.24 in precipitation 0.2 SepOctober: 0.38 in precipitation 0.4 OctNovember: 0.24 in precipitation 0.2 NovDecember: 0.49 in precipitation 0.5 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Johnson Valley, CA (2 mi away); precipitation: Johnson Valley, CA (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

4 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

922689a
Pioneertown, CA · 12 mi
922849a
Yucca Valley, CA · 13 mi
922869a
Yucca Valley, CA · 14 mi
923147a
Big Bear City, CA · 17 mi
922529a
Joshua Tree, CA · 19 mi
923867a
Sugarloaf, CA · 19 mi
922569b
Morongo Valley, CA · 19 mi
923568b
Lucerne Valley, CA · 24 mi

California planting zones →

Questions about 92285

What planting zone is ZIP code 92285?

ZIP code 92285 (Landers, CA) is in USDA hardiness zone 9a on the 2023 map: the coldest night of an average winter reaches 20 to 25 °F (−6.7 to −3.9 °C).

When is the last frost in Landers, CA?

The median last spring frost (32 °F) near 92285 is March 1; after March 29 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Johnson Valley station.

When is the first frost in Landers, CA?

The median first fall frost near 92285 is November 29, giving a median frost-free growing season of 271 days.

When should I plant tomatoes in 92285?

Start tomato seeds indoors around Jan 4 – Jan 18 and set transplants outside around Mar 8 – Mar 22, one to three weeks after the median last frost.

How much rain and snow does 92285 get?

About 5.6 inches of precipitation a year (NOAA 1991–2020 normals, Johnson Valley station).

How hot do summers get in Landers, CA?

The average high peaks at 97 °F in July, with about 110 days a year at 90 °F or more.

What kind of soil does 92285 have?

The USDA soil survey maps Typic Torriorthents at the center of ZIP 92285: gravelly sandy loam, somewhat excessively drained, pH about 8.0 (alkaline).

Did spring come early in Landers, CA in 2026?

Spring leaf-out near 92285 came on Jan 27 in 2026, 5 days earlier than the 1991–2020 average (Feb 1), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Landers, CA?

Intermediate onions: the longest day near 92285 is 14 h 27 min, so day-neutral types bulb best; long-day varieties may not bulb fully.