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

Planting zone for 72940 — Huntington, AR

ZIP code 72940 (Huntington, Sebastian County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is March 25 and the first fall frost November 6.

Where ZIP 72940 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.

Zone7b5 to 10 °F

Coldest night−15 to −12.2 °C

Last frostMar 25

First frostNov 6

2012 zone7b

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 7b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Huntington, AR…

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 Huntington, AR

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 25median — 50% chance of a later frost

Safe for tender plantsApril 11only 10% chance of frost after

First fall frostNovember 6median — 10% chance by Oct 23

Growing season224 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 11 and returns around November 17.

From the NOAA station Ft Smith Regional Airport, AR — 16 miles away, elevation 449 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 72940

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 11 – Feb 25

SpinachSow outdoors · Feb 11 – Mar 4

Broccoli, cabbageStart indoors · Jan 14 – Jan 28

Broccoli, cabbageTransplant · Mar 4 – Mar 18

Onion setsPlant outdoors · Feb 25 – Mar 11

PotatoesPlant outdoors · Mar 4 – Mar 18

LettuceSow outdoors · Feb 25 – Mar 11

Carrots, beetsSow outdoors · Mar 4 – Mar 18

TomatoesStart indoors · Jan 28 – Feb 11

TomatoesTransplant · Apr 1 – Apr 15

Peppers, eggplantStart indoors · Jan 14 – Jan 28

Peppers, eggplantTransplant · Apr 8 – Apr 22

BeansSow outdoors · Apr 1 – Apr 15

Sweet cornSow outdoors · Apr 1 – Apr 15

Cucumbers, squashSow outdoors · Apr 1 – Apr 15

Fall lettuce, spinachSow outdoors · Sep 11 – Sep 25

GarlicPlant cloves · Oct 23 – Nov 27

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 25) and first fall frost (Nov 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 72940 came on Feb 12 — 7 days earlier than the 1991–2020 average (Feb 19).

average
Feb 192026
Feb 12

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 7b in Arkansas

505 plants native to the lower 48 states, recorded in Arkansas, and rated by the USDA to survive 5 °F or colder — the bottom of zone 7b. 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 Huntington, AR.

Soil in Huntington, AR

The soil mapped at the center of ZIP 72940 is Wrightsville — silt loam, poorly drained.

TextureSilt loama good balance for most vegetables

pH4.6strongly acidic; most vegetables like 6.0–7.0

DrainagePoorly drainedconsider raised beds

Organic matter1.75%low — add compost

Hydrologic groupDwater soaks in very slowly

Farmland classPrime farmland if drained and either protected from flooding or not frequently flooded during the growing seasonUSDA classification

Map unit: Wrightsville silt loam, 0 to 2 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 72940; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Huntington, AR

Summer high94 °Faverage high, July

Winter low30 °Faverage low, January

Hot days78days a year at 90 °F or more

Freezing nights63nights a year at 32 °F or less

Growing degree days5,500base 50 °F — the season’s usable heat

Longest day14 h 31 mindaylight on June 21

Shortest day9 h 47 mindaylight on December 21

Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully

Precipitation51.6 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: Ft Smith Regional Airport, AR (16 mi away); precipitation: Greenwood 1.4 W, AR (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

Fort Smith, AR · 10 mi

729387b

Hartford, AR · 11 mi

729168a

Fort Smith, AR · 12 mi

729238a

Barling, AR · 13 mi

Arkansas planting zones →

Questions about 72940

What planting zone is ZIP code 72940?

ZIP code 72940 (Huntington, AR) is in USDA hardiness zone 7b on the 2023 map: the coldest night of an average winter reaches 5 to 10 °F (−15 to −12.2 °C).

When is the last frost in Huntington, AR?

The median last spring frost (32 °F) near 72940 is March 25; after April 11 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Ft Smith Regional Airport station.

When is the first frost in Huntington, AR?

The median first fall frost near 72940 is November 6, giving a median frost-free growing season of 224 days.

When should I plant tomatoes in 72940?

Start tomato seeds indoors around Jan 28 – Feb 11 and set transplants outside around Apr 1 – Apr 15, one to three weeks after the median last frost.

How much rain and snow does 72940 get?

About 51.6 inches of precipitation a year (NOAA 1991–2020 normals, Greenwood 1.4 W station).

How hot do summers get in Huntington, AR?

The average high peaks at 94 °F in July, with about 78 days a year at 90 °F or more.

What kind of soil does 72940 have?

The USDA soil survey maps Wrightsville at the center of ZIP 72940: silt loam, poorly drained, pH about 4.6 (strongly acidic).

Did spring come early in Huntington, AR in 2026?

Spring leaf-out near 72940 came on Feb 12 in 2026, 7 days earlier than the 1991–2020 average (Feb 19), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Huntington, AR?

Intermediate onions: the longest day near 72940 is 14 h 31 min, so day-neutral types bulb best; long-day varieties may not bulb fully.