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

Planting zone for 89830 — Montello, NV

ZIP code 89830 (Montello, Elko County) is in USDA zone 5b: the coldest winter night averages −15 to −10 °F. The median last spring frost is June 1 and the first fall frost September 12.

Where ZIP 89830 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.

Zone5b−15 to −10 °F

Coldest night−26.1 to −23.3 °C

Last frostJun 1

First frostSep 12

2012 zone5b

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 5b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Montello, 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 Montello, NV

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostJune 1median — 50% chance of a later frost

Safe for tender plantsJune 20only 10% chance of frost after

First fall frostSeptember 12median — 10% chance by Aug 27

Growing season100 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 15 and returns around September 21.

From the NOAA station Montello 2ne, NV — 3 miles away, elevation 4,830 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 89830

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 20 – May 4

SpinachSow outdoors · Apr 20 – May 11

Broccoli, cabbageStart indoors · Mar 23 – Apr 6

Broccoli, cabbageTransplant · May 11 – May 25

Onion setsPlant outdoors · May 4 – May 18

PotatoesPlant outdoors · May 11 – May 25

LettuceSow outdoors · May 4 – May 18

Carrots, beetsSow outdoors · May 11 – May 25

TomatoesStart indoors · Apr 6 – Apr 20

TomatoesTransplant · Jun 8 – Jun 22

Peppers, eggplantStart indoors · Mar 23 – Apr 6

Peppers, eggplantTransplant · Jun 15 – Jun 29

BeansSow outdoors · Jun 8 – Jun 22

Sweet cornSow outdoors · Jun 8 – Jun 22

Cucumbers, squashSow outdoors · Jun 8 – Jun 22

Fall lettuce, spinachSow outdoors · Jul 18 – Aug 1

GarlicPlant cloves · Aug 29 – Oct 3

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Jun 1) and first fall frost (Sep 12) 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 89830 came on Mar 20 — 16 days earlier than the 1991–2020 average (Apr 5).

average
Apr 52026
Mar 20

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 5b in Nevada

475 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 5b. 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 Montello, NV.

Soil in Montello, NV

The soil mapped at the center of ZIP 89830 is Valmy — loam, well drained.

TextureLoama good balance for most vegetables

pH8.8alkaline; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter0.75%low — add compost

Hydrologic groupBwater soaks in moderately

Farmland classNot prime farmlandUSDA classification

Map unit: Valmy-Luap 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 89830; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Montello, NV

Summer high92 °Faverage high, July

Winter low11 °Faverage low, December

Hot days57days a year at 90 °F or more

Freezing nights212nights a year at 32 °F or less

Growing degree days2,157base 50 °F — the season’s usable heat

Longest day15 h 10 mindaylight on June 21

Shortest day9 h 11 mindaylight on December 21

Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)

Precipitation8.8 inper year, rain and melted snow

Snowfall14 inper year

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Montello 2ne, NV (3 mi away); precipitation: Montello 2ne, NV (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

843136b

Grouse Creek, UT · 26 mi

898836b

West Wendover, NV · 33 mi

Park Valley, UT · 49 mi

Nevada planting zones →

Questions about 89830

What planting zone is ZIP code 89830?

ZIP code 89830 (Montello, NV) is in USDA hardiness zone 5b on the 2023 map: the coldest night of an average winter reaches −15 to −10 °F (−26.1 to −23.3 °C).

When is the last frost in Montello, NV?

The median last spring frost (32 °F) near 89830 is June 1; after June 20 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Montello 2ne station.

When is the first frost in Montello, NV?

The median first fall frost near 89830 is September 12, giving a median frost-free growing season of 100 days.

When should I plant tomatoes in 89830?

Start tomato seeds indoors around Apr 6 – Apr 20 and set transplants outside around Jun 8 – Jun 22, one to three weeks after the median last frost.

How much rain and snow does 89830 get?

About 8.8 inches of precipitation a year and 14 inches of snowfall (NOAA 1991–2020 normals, Montello 2ne station).

How hot do summers get in Montello, NV?

The average high peaks at 92 °F in July, with about 57 days a year at 90 °F or more.

What kind of soil does 89830 have?

The USDA soil survey maps Valmy at the center of ZIP 89830: loam, well drained, pH about 8.8 (alkaline).

Did spring come early in Montello, NV in 2026?

Spring leaf-out near 89830 came on Mar 20 in 2026, 16 days earlier than the 1991–2020 average (Apr 5), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Montello, NV?

Long-day onions: the longest day near 89830 is 15 h 10 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).