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

Planting zone for 89143 — Las Vegas, NV

ZIP code 89143 (Las Vegas, Clark County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is March 22 and the first fall frost November 7.

Where ZIP 89143 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 22
First frostNov 7
2012 zone8b

Was 8b on the 2012 map — half a zone warmer now. 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 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 frostMarch 22median — 50% chance of a later frost
Safe for tender plantsApril 13only 10% chance of frost after
First fall frostNovember 7median — 10% chance by Oct 21
Growing season229 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 1 and returns around November 19.

From the NOAA station Desert Nwr, NV — 9 miles away, elevation 2,914 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 89143

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 8 – Feb 22
SpinachSow outdoors · Feb 8 – Mar 1
Broccoli, cabbageStart indoors · Jan 11 – Jan 25
Broccoli, cabbageTransplant · Mar 1 – Mar 15
Onion setsPlant outdoors · Feb 22 – Mar 8
PotatoesPlant outdoors · Mar 1 – Mar 15
LettuceSow outdoors · Feb 22 – Mar 8
Carrots, beetsSow outdoors · Mar 1 – Mar 15
TomatoesStart indoors · Jan 25 – Feb 8
TomatoesTransplant · Mar 29 – Apr 12
Peppers, eggplantStart indoors · Jan 11 – Jan 25
Peppers, eggplantTransplant · Apr 5 – Apr 19
BeansSow outdoors · Mar 29 – Apr 12
Sweet cornSow outdoors · Mar 29 – Apr 12
Cucumbers, squashSow outdoors · Mar 29 – Apr 12
Fall lettuce, spinachSow outdoors · Sep 12 – Sep 26
GarlicPlant cloves · Oct 24 – Nov 28
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 22) and first fall frost (Nov 7) 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 89143 came on Jan 27 — 7 days earlier than the 1991–2020 average (Feb 3).

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 9a in Nevada

541 plants native to the lower 48 states, recorded in Nevada, and rated by the USDA to survive 20 °F or colder — the bottom of zone 9a. Each links to its USDA PLANTS profile.

Trees 29

Arizona cypress50 ft · blooms spring · low shade tolerance · to −23 °Fbalsam poplar80 ft · blooms late spring · high shade tolerance · to −79 °Fblack locust60 ft · blooms spring · high shade tolerance · to −37 °Fboxelder60 ft · blooms early spring · low shade tolerance · to −46 °FCalifornia red fir150 ft · blooms late spring · low shade tolerance · to −23 °FDouglas-fir200 ft · blooms mid spring · medium shade tolerance · to −33 °F

Shrubs 111

alderleaf mountain mahogany15 ft · blooms late spring · medium shade tolerance · to −41 °Falpine laurel1 ft · blooms late spring · low shade tolerance · to −28 °Fantelope bitterbrush6 ft · blooms early spring · medium shade tolerance · to −36 °FApache plume6 ft · blooms late spring · high shade tolerance · to −23 °Fbig sagebrush4 ft · blooms mid summer · high shade tolerance · to −43 °Fbig saltbush10 ft · blooms early summer · high shade tolerance · to 7 °F

Wildflowers & perennials 255

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine bistort1 ft · blooms mid spring · high shade tolerance · to −38 °Falpine mountainsorrel1 ft · blooms mid summer · medium shade tolerance · to −43 °FAmerican alpine speedwell1 ft · blooms summer · medium shade tolerance · to −28 °FAmerican bistort1.5 ft · blooms mid spring · high shade tolerance · to −38 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °F

Grasses 136

Alaska oniongrass3 ft · blooms mid spring · low shade tolerance · to −33 °Falkali cordgrass3 ft · blooms late summer · high shade tolerance · to −38 °Falkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °Falpine timothy1.4 ft · blooms late spring · medium shade tolerance · to −43 °Fanalogue sedge1.5 ft · blooms late spring · medium shade tolerance · to −38 °Farctic bluegrass2 ft · high shade tolerance · to −62 °F

Vines 1

western white clematis1 ft · blooms mid summer · medium shade tolerance · to −38 °F

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 89143 is Weiser — extremely gravelly fine sandy loam, well drained.

TextureExtremely gravelly fine sandy loamdrains and warms fast; dries out and needs more feeding
pH8.2alkaline; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter0.25%low — add compost
Hydrologic groupAwater soaks in fast
Farmland classNot prime farmlandUSDA classification

Map unit: Weiser-Wechech association.

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 89143; 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 high101 °Faverage high, July
Winter low30 °Faverage low, December
Hot days128days a year at 90 °F or more
Freezing nights60nights a year at 32 °F or less
Growing degree days5,272base 50 °F — the season’s usable heat
Longest day14 h 38 mindaylight on June 21
Shortest day9 h 41 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation6.1 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 31 °F 57°31° JanFebruary: average high 61 °F, low 34 °F 61°34° FebMarch: average high 68 °F, low 39 °F 68°39° MarApril: average high 76 °F, low 45 °F 76°45° AprMay: average high 85 °F, low 53 °F 85°53° MayJune: average high 96 °F, low 61 °F 96°61° JunJuly: average high 101 °F, low 68 °F 101°68° JulAugust: average high 100 °F, low 66 °F 100°66° AugSeptember: average high 92 °F, low 58 °F 92°58° SepOctober: average high 79 °F, low 46 °F 79°46° OctNovember: average high 66 °F, low 36 °F 66°36° NovDecember: average high 56 °F, low 30 °F 56°30° Dec

Precipitation by month inches

0″1″January: 0.62 in precipitation 0.6 JanFebruary: 0.89 in precipitation 0.9 FebMarch: 0.54 in precipitation 0.5 MarApril: 0.60 in precipitation 0.6 AprMay: 0.19 in precipitation 0.2 MayJune: 0.09 in precipitation 0.1 JunJuly: 0.68 in precipitation 0.7 JulAugust: 0.41 in precipitation 0.4 AugSeptember: 0.67 in precipitation 0.7 SepOctober: 0.54 in precipitation 0.5 OctNovember: 0.34 in precipitation 0.3 NovDecember: 0.52 in precipitation 0.5 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Desert Nwr, NV (9 mi away); precipitation: North Las Vegas 4.4 Sw, NV (8 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

891319a
Las Vegas, NV · 3 mi
891499a
Las Vegas, NV · 4 mi
890859a
North Las Vegas, NV · 5 mi
891309a
Las Vegas, NV · 6 mi
891299a
Las Vegas, NV · 6 mi
891259b
Las Vegas, NV · 7 mi
890849a
North Las Vegas, NV · 8 mi
890319b
North Las Vegas, NV · 8 mi

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

Questions about 89143

What planting zone is ZIP code 89143?

ZIP code 89143 (Las Vegas, NV) 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 Las Vegas, NV?

The median last spring frost (32 °F) near 89143 is March 22; after April 13 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Desert Nwr station.

When is the first frost in Las Vegas, NV?

The median first fall frost near 89143 is November 7, giving a median frost-free growing season of 229 days.

When should I plant tomatoes in 89143?

Start tomato seeds indoors around Jan 25 – Feb 8 and set transplants outside around Mar 29 – Apr 12, one to three weeks after the median last frost.

How much rain and snow does 89143 get?

About 6.1 inches of precipitation a year (NOAA 1991–2020 normals, North Las Vegas 4.4 Sw station).

How hot do summers get in Las Vegas, NV?

The average high peaks at 101 °F in July, with about 128 days a year at 90 °F or more.

What kind of soil does 89143 have?

The USDA soil survey maps Weiser at the center of ZIP 89143: extremely gravelly fine sandy loam, well drained, pH about 8.2 (alkaline).

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

Spring leaf-out near 89143 came on Jan 27 in 2026, 7 days earlier than the 1991–2020 average (Feb 3), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Las Vegas, NV?

Intermediate onions: the longest day near 89143 is 14 h 38 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 89143 change?

Yes. The 2012 USDA map put 89143 in zone 8b; the 2023 map puts it in zone 9a. The newer map uses 1991–2020 data and more weather stations.