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

Planting zone for 83874 — Murray, ID

ZIP code 83874 (Murray, Shoshone County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is May 31 and the first fall frost September 5.

Where ZIP 83874 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.

Zone6a−10 to −5 °F

Coldest night−23.3 to −20.6 °C

Last frostMay 31

First frostSep 5

2012 zone6a

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 6a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Murray, ID…

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 Murray, ID

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 23only 10% chance of frost after

First fall frostSeptember 5median — 10% chance by Aug 20

Growing season95 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 11 and returns around September 24.

From the NOAA station Prichard 3 Ese, ID — 5 miles away, elevation 2,546 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 83874

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 · Jul 11 – Jul 25

GarlicPlant cloves · Aug 22 – Sep 26

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 31) and first fall frost (Sep 5) 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 83874 came on Apr 22 — 6 days earlier than the 1991–2020 average (Apr 28).

average
Apr 282026
Apr 22

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 6a in Idaho

567 plants native to the lower 48 states, recorded in Idaho, and rated by the USDA to survive −10 °F or colder — the bottom of zone 6a. 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 Murray, ID.

Soil in Murray, ID

The soil mapped at the center of ZIP 83874 is Humic Udivitrands — slightly decomposed plant material, well drained.

TextureSlightly decomposed plant materialtop layer

pH5.5moderately acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter75%high

Hydrologic groupBwater soaks in moderately

Farmland classNot prime farmlandUSDA classification

Map unit: Humic Udivitrands-Ahrs-Goatrock families, complex, steep breaklands with avalanche chutes, weakly weathered belts, timber-brush-fern glade mosaic, south aspects.

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 83874; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Murray, ID

Summer high84 °Faverage high, August

Winter low21 °Faverage low, January

Hot days22days a year at 90 °F or more

Freezing nights197nights a year at 32 °F or less

Growing degree days1,376base 50 °F — the season’s usable heat

Longest day15 h 59 mindaylight on June 21

Shortest day8 h 25 mindaylight on December 21

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

Precipitation44.3 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: Prichard 3 Ese, ID (5 mi away); precipitation: Prichard 3 Ese, ID (5 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.

Silverton, ID · 12 mi

598746a

Trout Creek, MT · 15 mi

Smelterville, ID · 20 mi

Idaho planting zones →

Questions about 83874

What planting zone is ZIP code 83874?

ZIP code 83874 (Murray, ID) is in USDA hardiness zone 6a on the 2023 map: the coldest night of an average winter reaches −10 to −5 °F (−23.3 to −20.6 °C).

When is the last frost in Murray, ID?

The median last spring frost (32 °F) near 83874 is May 31; after June 23 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Prichard 3 Ese station.

When is the first frost in Murray, ID?

The median first fall frost near 83874 is September 5, giving a median frost-free growing season of 95 days.

When should I plant tomatoes in 83874?

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 83874 get?

About 44.3 inches of precipitation a year (NOAA 1991–2020 normals, Prichard 3 Ese station).

How hot do summers get in Murray, ID?

The average high peaks at 84 °F in August, with about 22 days a year at 90 °F or more.

What kind of soil does 83874 have?

The USDA soil survey maps Humic Udivitrands at the center of ZIP 83874: slightly decomposed plant material, well drained, pH about 5.5 (moderately acidic).

Did spring come early in Murray, ID in 2026?

Spring leaf-out near 83874 came on Apr 22 in 2026, 6 days earlier than the 1991–2020 average (Apr 28), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Murray, ID?

Long-day onions: the longest day near 83874 is 15 h 59 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).