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

Planting zone for 83624 — Grand View, ID

ZIP code 83624 (Grand View, Owyhee County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 28 and the first fall frost October 6.

Where ZIP 83624 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 28
First frostOct 6
2012 zone6b

Was 6b 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 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Grand View, 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 Grand View, ID

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 28median — 50% chance of a later frost
Safe for tender plantsMay 13only 10% chance of frost after
First fall frostOctober 6median — 10% chance by Sep 24
Growing season162 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 12 and returns around October 20.

From the NOAA station Grand View 4 Nw, ID — 7 miles away, elevation 2,402 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 83624

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 17 – Mar 31
SpinachSow outdoors · Mar 17 – Apr 7
Broccoli, cabbageStart indoors · Feb 17 – Mar 3
Broccoli, cabbageTransplant · Apr 7 – Apr 21
Onion setsPlant outdoors · Mar 31 – Apr 14
PotatoesPlant outdoors · Apr 7 – Apr 21
LettuceSow outdoors · Mar 31 – Apr 14
Carrots, beetsSow outdoors · Apr 7 – Apr 21
TomatoesStart indoors · Mar 3 – Mar 17
TomatoesTransplant · May 5 – May 19
Peppers, eggplantStart indoors · Feb 17 – Mar 3
Peppers, eggplantTransplant · May 12 – May 26
BeansSow outdoors · May 5 – May 19
Sweet cornSow outdoors · May 5 – May 19
Cucumbers, squashSow outdoors · May 5 – May 19
Fall lettuce, spinachSow outdoors · Aug 11 – Aug 25
GarlicPlant cloves · Sep 22 – Oct 27
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 28) and first fall frost (Oct 6) 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 83624 came on Mar 10 — 11 days earlier than the 1991–2020 average (Mar 21).

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 7a in Idaho

575 plants native to the lower 48 states, recorded in Idaho, and rated by the USDA to survive 0 °F or colder — the bottom of zone 7a. Each links to its USDA PLANTS profile.

Trees 30

balsam poplar80 ft · blooms late spring · high shade tolerance · to −79 °Fblack locust60 ft · blooms spring · high shade tolerance · to −37 °Fblue spruce100 ft · blooms late spring · medium shade tolerance · to −38 °Fboxelder60 ft · blooms early spring · low shade tolerance · to −46 °FDouglas-fir200 ft · blooms mid spring · medium shade tolerance · to −33 °FEngelmann spruce120 ft · blooms late spring · low shade tolerance · to −50 °F

Shrubs 101

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °Falderleaf 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 °FBarclay's willow15 ft · high shade tolerance · to −43 °Fbeaked hazelnut15 ft · blooms early spring · low shade tolerance · to −47 °F

Wildflowers & perennials 277

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 155

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 Meadow-Foxtail0.5 ft · blooms mid spring · medium shade tolerance · to −33 °Falpine timothy1.4 ft · blooms late spring · medium shade tolerance · to −43 °Fanalogue sedge1.5 ft · blooms late spring · medium shade tolerance · to −38 °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 Grand View, ID.

Soil in Grand View, ID

The soil mapped at the center of ZIP 83624 is Garbutt — silt loam, well drained.

TextureSilt loama good balance for most vegetables
pH8.5alkaline; 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: Garbutt silt loam, 4 to 8 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 83624; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Grand View, ID

Summer high93 °Faverage high, July
Winter low23 °Faverage low, January
Hot days61days a year at 90 °F or more
Freezing nights133nights a year at 32 °F or less
Growing degree days3,174base 50 °F — the season’s usable heat
Longest day15 h 21 mindaylight on June 21
Shortest day9 h 01 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation6.7 inper year, rain and melted snow

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 41 °F, low 23 °F 41°23° JanFebruary: average high 49 °F, low 27 °F 49°27° FebMarch: average high 60 °F, low 32 °F 60°32° MarApril: average high 67 °F, low 38 °F 67°38° AprMay: average high 76 °F, low 46 °F 76°46° MayJune: average high 84 °F, low 53 °F 84°53° JunJuly: average high 93 °F, low 58 °F 93°58° JulAugust: average high 92 °F, low 55 °F 92°55° AugSeptember: average high 83 °F, low 47 °F 83°47° SepOctober: average high 68 °F, low 37 °F 68°37° OctNovember: average high 51 °F, low 28 °F 51°28° NovDecember: average high 40 °F, low 23 °F 40°23° Dec

Precipitation by month inches

0″1″January: 0.75 in precipitation 0.8 JanFebruary: 0.49 in precipitation 0.5 FebMarch: 0.69 in precipitation 0.7 MarApril: 0.65 in precipitation 0.7 AprMay: 0.90 in precipitation 0.9 MayJune: 0.57 in precipitation 0.6 JunJuly: 0.26 in precipitation 0.3 JulAugust: 0.20 in precipitation 0.2 AugSeptember: 0.24 in precipitation 0.2 SepOctober: 0.44 in precipitation 0.4 OctNovember: 0.61 in precipitation 0.6 NovDecember: 0.88 in precipitation 0.9 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Grand View 4 Nw, ID (7 mi away); precipitation: Grand View 4 Nw, ID (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7a.

836487a
Mountain Home Afb, ID · 17 mi
836507a
Murphy, ID · 26 mi
836047a
Bruneau, ID · 27 mi
836277a
Hammett, ID · 31 mi
836347a
Kuna, ID · 37 mi
837087a
Boise, ID · 37 mi
837117a
Boise, ID · 37 mi
837157a
Boise, ID · 37 mi

Idaho planting zones →

Questions about 83624

What planting zone is ZIP code 83624?

ZIP code 83624 (Grand View, ID) 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 Grand View, ID?

The median last spring frost (32 °F) near 83624 is April 28; after May 13 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Grand View 4 Nw station.

When is the first frost in Grand View, ID?

The median first fall frost near 83624 is October 6, giving a median frost-free growing season of 162 days.

When should I plant tomatoes in 83624?

Start tomato seeds indoors around Mar 3 – Mar 17 and set transplants outside around May 5 – May 19, one to three weeks after the median last frost.

How much rain and snow does 83624 get?

About 6.7 inches of precipitation a year (NOAA 1991–2020 normals, Grand View 4 Nw station).

How hot do summers get in Grand View, ID?

The average high peaks at 93 °F in July, with about 61 days a year at 90 °F or more.

What kind of soil does 83624 have?

The USDA soil survey maps Garbutt at the center of ZIP 83624: silt loam, well drained, pH about 8.5 (alkaline).

Did spring come early in Grand View, ID in 2026?

Spring leaf-out near 83624 came on Mar 10 in 2026, 11 days earlier than the 1991–2020 average (Mar 21), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Grand View, ID?

Long-day onions: the longest day near 83624 is 15 h 21 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 83624 change?

Yes. The 2012 USDA map put 83624 in zone 6b; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.