Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 89124 — Las Vegas, NV

ZIP code 89124 (Las Vegas, Clark County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is May 31 and the first fall frost October 2.

Where ZIP 89124 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.

Zone8b15 to 20 °F

Coldest night−9.4 to −6.7 °C

Last frostMay 31

First frostOct 2

2012 zone7b

Was 7b on the 2012 map — a full zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 8b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Las Vegas, NV…

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 Las Vegas, NV

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostMay 31median — 50% chance of a later frost

Safe for tender plantsJune 14only 10% chance of frost after

First fall frostOctober 2median — 10% chance by Sep 19

Growing season124 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 15 and returns around October 13.

From the NOAA station Mt Charleston Fire Stn, NV — 9 miles away, elevation 7,461 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 89124

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 19 – May 3

SpinachSow outdoors · Apr 19 – May 10

Broccoli, cabbageStart indoors · Mar 22 – Apr 5

Broccoli, cabbageTransplant · May 10 – May 24

Onion setsPlant outdoors · May 3 – May 17

PotatoesPlant outdoors · May 10 – May 24

LettuceSow outdoors · May 3 – May 17

Carrots, beetsSow outdoors · May 10 – May 24

TomatoesStart indoors · Apr 5 – Apr 19

TomatoesTransplant · Jun 7 – Jun 21

Peppers, eggplantStart indoors · Mar 22 – Apr 5

Peppers, eggplantTransplant · Jun 14 – Jun 28

BeansSow outdoors · Jun 7 – Jun 21

Sweet cornSow outdoors · Jun 7 – Jun 21

Cucumbers, squashSow outdoors · Jun 7 – Jun 21

Fall lettuce, spinachSow outdoors · Aug 7 – Aug 21

GarlicPlant cloves · Sep 18 – Oct 23

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 31) and first fall frost (Oct 2) 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 89124 came on Feb 7 — 51 days earlier than the 1991–2020 average (Mar 30).

average
Mar 302026
Feb 7

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).

Native plants for zone 8b in Nevada

538 plants native to the lower 48 states, recorded in Nevada, and rated by the USDA to survive 15 °F or colder — the bottom of zone 8b. Each links to its USDA PLANTS profile.

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Las Vegas, NV.

Soil in Las Vegas, NV

The soil mapped at the center of ZIP 89124 is Mackscanyon — very gravelly silt loam, well drained.

TextureVery gravelly silt loama good balance for most vegetables

pH8.2alkaline; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter1.75%low — add compost

Hydrologic groupBwater soaks in moderately

Farmland classNot prime farmlandUSDA classification

Map unit: Mackscanyon very gravelly silt loam, 15 to 50 percent slopes.

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 89124; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Las Vegas, NV

Summer high79 °Faverage high, July

Winter low21 °Faverage low, December

Hot days1days a year at 90 °F or more

Freezing nights193nights a year at 32 °F or less

Growing degree days1,700base 50 °F — the season’s usable heat

Longest day14 h 39 mindaylight on June 21

Shortest day9 h 40 mindaylight on December 21

Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully

Precipitation23.6 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Mt Charleston Fire Stn, NV (9 mi away); precipitation: Bristlecone Trail, NV (5 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

890708b

Indian Springs, NV · 8 mi

890188a

Indian Springs, NV · 12 mi

891668b

Las Vegas, NV · 13 mi

890418b

Pahrump, NV · 21 mi

891388b

Las Vegas, NV · 22 mi

891439a

Las Vegas, NV · 22 mi

890488b

Pahrump, NV · 23 mi

891499a

Las Vegas, NV · 23 mi

All 75 ZIP codes in Las Vegas → · Nevada planting zones →

Questions about 89124

What planting zone is ZIP code 89124?

ZIP code 89124 (Las Vegas, NV) is in USDA hardiness zone 8b on the 2023 map: the coldest night of an average winter reaches 15 to 20 °F (−9.4 to −6.7 °C).

When is the last frost in Las Vegas, NV?

The median last spring frost (32 °F) near 89124 is May 31; after June 14 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Mt Charleston Fire Stn station.

When is the first frost in Las Vegas, NV?

The median first fall frost near 89124 is October 2, giving a median frost-free growing season of 124 days.

When should I plant tomatoes in 89124?

Start tomato seeds indoors around Apr 5 – Apr 19 and set transplants outside around Jun 7 – Jun 21, one to three weeks after the median last frost.

How much rain and snow does 89124 get?

About 23.6 inches of precipitation a year (NOAA 1991–2020 normals, Bristlecone Trail station).

How hot do summers get in Las Vegas, NV?

The average high peaks at 79 °F in July, with about 1 days a year at 90 °F or more.

What kind of soil does 89124 have?

The USDA soil survey maps Mackscanyon at the center of ZIP 89124: very gravelly silt loam, well drained, pH about 8.2 (alkaline).

Did spring come early in Las Vegas, NV in 2026?

Spring leaf-out near 89124 came on Feb 7 in 2026, 51 days earlier than the 1991–2020 average (Mar 30), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Las Vegas, NV?

Intermediate onions: the longest day near 89124 is 14 h 39 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 89124 change?

Yes. The 2012 USDA map put 89124 in zone 7b; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.