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

Planting zone for 83316 — Buhl, ID

ZIP code 83316 (Buhl, Twin Falls County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is May 17 and the first fall frost September 29.

Where ZIP 83316 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 frostMay 17

First frostSep 29

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 Buhl, 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 Buhl, ID

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMay 17median — 50% chance of a later frost

Safe for tender plantsJune 5only 10% chance of frost after

First fall frostSeptember 29median — 10% chance by Sep 11

Growing season132 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 30 and returns around October 13.

From the NOAA station Castleford 2 N, ID — 5 miles away, elevation 3,826 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 83316

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 5 – Apr 19

SpinachSow outdoors · Apr 5 – Apr 26

Broccoli, cabbageStart indoors · Mar 8 – Mar 22

Broccoli, cabbageTransplant · Apr 26 – May 10

Onion setsPlant outdoors · Apr 19 – May 3

PotatoesPlant outdoors · Apr 26 – May 10

LettuceSow outdoors · Apr 19 – May 3

Carrots, beetsSow outdoors · Apr 26 – May 10

TomatoesStart indoors · Mar 22 – Apr 5

TomatoesTransplant · May 24 – Jun 7

Peppers, eggplantStart indoors · Mar 8 – Mar 22

Peppers, eggplantTransplant · May 31 – Jun 14

BeansSow outdoors · May 24 – Jun 7

Sweet cornSow outdoors · May 24 – Jun 7

Cucumbers, squashSow outdoors · May 24 – Jun 7

Fall lettuce, spinachSow outdoors · Aug 4 – Aug 18

GarlicPlant cloves · Sep 15 – Oct 20

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 17) and first fall frost (Sep 29) 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 83316 came on Mar 6 — 18 days earlier than the 1991–2020 average (Mar 24).

average
Mar 242026
Mar 6

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.

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 Buhl, ID.

Soil in Buhl, ID

The soil mapped at the center of ZIP 83316 is Rakane — loam, well drained.

TextureLoama good balance for most vegetables

pH7.0neutral; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter1.5%low — add compost

Hydrologic groupCwater soaks in slowly

Farmland classPrime farmland if irrigatedUSDA classification

Map unit: Rakane-Blacknest complex, 1 to 4 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 83316; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Buhl, ID

Summer high88 °Faverage high, July

Winter low19 °Faverage low, December

Hot days34days a year at 90 °F or more

Freezing nights146nights a year at 32 °F or less

Growing degree days2,256base 50 °F — the season’s usable heat

Longest day15 h 19 mindaylight on June 21

Shortest day9 h 03 mindaylight on December 21

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

Precipitation10.7 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: Castleford 2 N, ID (5 mi away); precipitation: Castleford 2 N, 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.

Castleford, ID · 19 mi

833036b

Twin Falls, ID · 22 mi

833306b

Gooding, ID · 24 mi

833016b

Twin Falls, ID · 24 mi

833386b

Jerome, ID · 24 mi

Idaho planting zones →

Questions about 83316

What planting zone is ZIP code 83316?

ZIP code 83316 (Buhl, 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 Buhl, ID?

The median last spring frost (32 °F) near 83316 is May 17; after June 5 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Castleford 2 N station.

When is the first frost in Buhl, ID?

The median first fall frost near 83316 is September 29, giving a median frost-free growing season of 132 days.

When should I plant tomatoes in 83316?

Start tomato seeds indoors around Mar 22 – Apr 5 and set transplants outside around May 24 – Jun 7, one to three weeks after the median last frost.

How much rain and snow does 83316 get?

About 10.7 inches of precipitation a year (NOAA 1991–2020 normals, Castleford 2 N station).

How hot do summers get in Buhl, ID?

The average high peaks at 88 °F in July, with about 34 days a year at 90 °F or more.

What kind of soil does 83316 have?

The USDA soil survey maps Rakane at the center of ZIP 83316: loam, well drained, pH about 7.0 (neutral).

Did spring come early in Buhl, ID in 2026?

Spring leaf-out near 83316 came on Mar 6 in 2026, 18 days earlier than the 1991–2020 average (Mar 24), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Buhl, ID?

Long-day onions: the longest day near 83316 is 15 h 19 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 83316 change?

Yes. The 2012 USDA map put 83316 in zone 6b; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.