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

Planting zone for 83348 — Picabo, ID

ZIP code 83348 (Picabo, Blaine County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is June 16 and the first fall frost September 9.

Where ZIP 83348 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 frostJun 16

First frostSep 9

2012 zone5a

Was 5a on the 2012 map — a full zone warmer now. 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 Picabo, 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 Picabo, ID

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostJune 16median — 50% chance of a later frost

Safe for tender plantsJune 30only 10% chance of frost after

First fall frostSeptember 9median — 10% chance by Aug 25

Growing season85 daysfrost-free, median

A hard freeze (28 °F) usually ends around June 2 and returns around September 23.

From the NOAA station Picabo, ID — 4 miles away, elevation 4,839 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 83348

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · May 5 – May 19

SpinachSow outdoors · May 5 – May 26

Broccoli, cabbageStart indoors · Apr 7 – Apr 21

Broccoli, cabbageTransplant · May 26 – Jun 9

Onion setsPlant outdoors · May 19 – Jun 2

PotatoesPlant outdoors · May 26 – Jun 9

LettuceSow outdoors · May 19 – Jun 2

Carrots, beetsSow outdoors · May 26 – Jun 9

TomatoesStart indoors · Apr 21 – May 5

TomatoesTransplant · Jun 23 – Jul 7

Peppers, eggplantStart indoors · Apr 7 – Apr 21

Peppers, eggplantTransplant · Jun 30 – Jul 14

BeansSow outdoors · Jun 23 – Jul 7

Sweet cornSow outdoors · Jun 23 – Jul 7

Cucumbers, squashSow outdoors · Jun 23 – Jul 7

Fall lettuce, spinachSow outdoors · Jul 15 – Jul 29

GarlicPlant cloves · Aug 26 – Sep 30

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Jun 16) and first fall frost (Sep 9) 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 83348 came on Mar 30 — 22 days earlier than the 1991–2020 average (Apr 21).

average
Apr 212026
Mar 30

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 Picabo, ID.

Soil in Picabo, ID

The soil mapped at the center of ZIP 83348 is Vitale — very gravelly loam, well drained.

TextureVery gravelly loama good balance for most vegetables

pH6.7neutral; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter2%moderate

Hydrologic groupCwater soaks in slowly

Farmland classNot prime farmlandUSDA classification

Map unit: Vitale-Povey association, 30 to 60 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 83348; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Picabo, ID

Summer high87 °Faverage high, July

Winter low7 °Faverage low, January

Hot days23days a year at 90 °F or more

Freezing nights214nights a year at 32 °F or less

Growing degree days1,592base 50 °F — the season’s usable heat

Longest day15 h 24 mindaylight on June 21

Shortest day8 h 58 mindaylight on December 21

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

Precipitation13 inper year, rain and melted snow

Snowfall46 inper year; 91 days with snow on the ground

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

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

Nearby ZIP codes

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

833135b

Bellevue, ID · 6 mi

833496a

Richfield, ID · 12 mi

Sun Valley, ID · 29 mi

833246a

Dietrich, ID · 29 mi

833535b

Sun Valley, ID · 30 mi

Idaho planting zones →

Questions about 83348

What planting zone is ZIP code 83348?

ZIP code 83348 (Picabo, 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 Picabo, ID?

The median last spring frost (32 °F) near 83348 is June 16; after June 30 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Picabo station.

When is the first frost in Picabo, ID?

The median first fall frost near 83348 is September 9, giving a median frost-free growing season of 85 days.

When should I plant tomatoes in 83348?

Start tomato seeds indoors around Apr 21 – May 5 and set transplants outside around Jun 23 – Jul 7, one to three weeks after the median last frost.

How much rain and snow does 83348 get?

About 13 inches of precipitation a year and 46 inches of snowfall (NOAA 1991–2020 normals, Picabo station).

How hot do summers get in Picabo, ID?

The average high peaks at 87 °F in July, with about 23 days a year at 90 °F or more.

What kind of soil does 83348 have?

The USDA soil survey maps Vitale at the center of ZIP 83348: very gravelly loam, well drained, pH about 6.7 (neutral).

Did spring come early in Picabo, ID in 2026?

Spring leaf-out near 83348 came on Mar 30 in 2026, 22 days earlier than the 1991–2020 average (Apr 21), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Picabo, ID?

Long-day onions: the longest day near 83348 is 15 h 24 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 83348 change?

Yes. The 2012 USDA map put 83348 in zone 5a; the 2023 map puts it in zone 6a. The newer map uses 1991–2020 data and more weather stations.