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

Planting zone for 89415 — Hawthorne, NV

ZIP code 89415 (Hawthorne, Mineral County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 22 and the first fall frost October 25.

Where ZIP 89415 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.

Zone7a0 to 5 °F

Coldest night−17.8 to −15 °C

Last frostApr 22

First frostOct 25

2012 zone7b

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

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Hawthorne, 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 Hawthorne, NV

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostApril 22median — 50% chance of a later frost

Safe for tender plantsMay 11only 10% chance of frost after

First fall frostOctober 25median — 10% chance by Oct 12

Growing season185 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 5 and returns around November 5.

From the NOAA station Hawthorne, NV — 9 miles away, elevation 4,400 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 89415

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Mar 11 – Mar 25

SpinachSow outdoors · Mar 11 – Apr 1

Broccoli, cabbageStart indoors · Feb 11 – Feb 25

Broccoli, cabbageTransplant · Apr 1 – Apr 15

Onion setsPlant outdoors · Mar 25 – Apr 8

PotatoesPlant outdoors · Apr 1 – Apr 15

LettuceSow outdoors · Mar 25 – Apr 8

Carrots, beetsSow outdoors · Apr 1 – Apr 15

TomatoesStart indoors · Feb 25 – Mar 11

TomatoesTransplant · Apr 29 – May 13

Peppers, eggplantStart indoors · Feb 11 – Feb 25

Peppers, eggplantTransplant · May 6 – May 20

BeansSow outdoors · Apr 29 – May 13

Sweet cornSow outdoors · Apr 29 – May 13

Cucumbers, squashSow outdoors · Apr 29 – May 13

Fall lettuce, spinachSow outdoors · Aug 30 – Sep 13

GarlicPlant cloves · Oct 11 – Nov 15

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 22) and first fall frost (Oct 25) 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 89415 came on Mar 31 — 39 days earlier than the 1991–2020 average (May 9).

average
May 92026
Mar 31

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 Hawthorne, NV

The soil mapped at the center of ZIP 89415 is Snopoc — very gravelly coarse sandy loam, well drained.

TextureVery gravelly coarse sandy loamdrains and warms fast; dries out and needs more feeding

pH6.7neutral; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter3.5%moderate

Hydrologic groupAwater soaks in fast

Farmland classNot prime farmlandUSDA classification

Map unit: Snopoc-Rockabin-Hiridge 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 89415; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Hawthorne, NV

Summer high95 °Faverage high, July

Winter low26 °Faverage low, January

Hot days82days a year at 90 °F or more

Freezing nights108nights a year at 32 °F or less

Growing degree days3,871base 50 °F — the season’s usable heat

Longest day14 h 51 mindaylight on June 21

Shortest day9 h 28 mindaylight on December 21

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

Precipitation4.2 inper year, rain and melted snow

Snowfall1 inper year

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Hawthorne, NV (9 mi away); precipitation: Hawthorne, NV (9 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.

894277a

Schurz, NV · 28 mi

894477a

Yerington, NV · 28 mi

935176a

Bridgeport, CA · 31 mi

Wellington, NV · 36 mi

935416b

Lee Vining, CA · 37 mi

Nevada planting zones →

Questions about 89415

What planting zone is ZIP code 89415?

ZIP code 89415 (Hawthorne, NV) is in USDA hardiness zone 7a on the 2023 map: the coldest night of an average winter reaches 0 to 5 °F (−17.8 to −15 °C).

When is the last frost in Hawthorne, NV?

The median last spring frost (32 °F) near 89415 is April 22; after May 11 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Hawthorne station.

When is the first frost in Hawthorne, NV?

The median first fall frost near 89415 is October 25, giving a median frost-free growing season of 185 days.

When should I plant tomatoes in 89415?

Start tomato seeds indoors around Feb 25 – Mar 11 and set transplants outside around Apr 29 – May 13, one to three weeks after the median last frost.

How much rain and snow does 89415 get?

About 4.2 inches of precipitation a year and 1 inches of snowfall (NOAA 1991–2020 normals, Hawthorne station).

How hot do summers get in Hawthorne, NV?

The average high peaks at 95 °F in July, with about 82 days a year at 90 °F or more.

What kind of soil does 89415 have?

The USDA soil survey maps Snopoc at the center of ZIP 89415: very gravelly coarse sandy loam, well drained, pH about 6.7 (neutral).

Did spring come early in Hawthorne, NV in 2026?

Spring leaf-out near 89415 came on Mar 31 in 2026, 39 days earlier than the 1991–2020 average (May 9), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Hawthorne, NV?

Intermediate onions: the longest day near 89415 is 14 h 51 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 89415 change?

Yes. The 2012 USDA map put 89415 in zone 7b; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.