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

Planting zone for 72730 — Farmington, AR

ZIP code 72730 (Farmington, Washington County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 15 and the first fall frost October 21.

Where ZIP 72730 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 15
First frostOct 21
2012 zone7a

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 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Farmington, 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 Farmington, AR

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 15median — 50% chance of a later frost
Safe for tender plantsMay 1only 10% chance of frost after
First fall frostOctober 21median — 10% chance by Oct 8
Growing season188 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 3 and returns around October 31.

From the NOAA station Fayetteville Drake Field, AR — 6 miles away, elevation 1,250 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 72730

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 4 – Mar 18
SpinachSow outdoors · Mar 4 – Mar 25
Broccoli, cabbageStart indoors · Feb 4 – Feb 18
Broccoli, cabbageTransplant · Mar 25 – Apr 8
Onion setsPlant outdoors · Mar 18 – Apr 1
PotatoesPlant outdoors · Mar 25 – Apr 8
LettuceSow outdoors · Mar 18 – Apr 1
Carrots, beetsSow outdoors · Mar 25 – Apr 8
TomatoesStart indoors · Feb 18 – Mar 4
TomatoesTransplant · Apr 22 – May 6
Peppers, eggplantStart indoors · Feb 4 – Feb 18
Peppers, eggplantTransplant · Apr 29 – May 13
BeansSow outdoors · Apr 22 – May 6
Sweet cornSow outdoors · Apr 22 – May 6
Cucumbers, squashSow outdoors · Apr 22 – May 6
Fall lettuce, spinachSow outdoors · Aug 26 – Sep 9
GarlicPlant cloves · Oct 7 – Nov 11
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 15) and first fall frost (Oct 21) 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 72730 came on Feb 15 — 15 days earlier than the 1991–2020 average (Mar 2).

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).

Soil in Farmington, AR

The soil mapped at the center of ZIP 72730 is Pickwick — silt loam, well drained.

TextureSilt loama good balance for most vegetables
pH5.0strongly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.75%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Pickwick silt loam, 3 to 8 percent slopes, eroded.

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 72730; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Farmington, AR

Summer high89 °Faverage high, July
Winter low25 °Faverage low, January
Hot days41days a year at 90 °F or more
Freezing nights94nights a year at 32 °F or less
Growing degree days4,226base 50 °F — the season’s usable heat
Longest day14 h 37 mindaylight on June 21
Shortest day9 h 42 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation47 inper year, rain and melted snow
Snowfall7 inper year; 5 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 48 °F, low 25 °F 48°25° JanFebruary: average high 52 °F, low 29 °F 52°29° FebMarch: average high 61 °F, low 36 °F 61°36° MarApril: average high 70 °F, low 45 °F 70°45° AprMay: average high 77 °F, low 54 °F 77°54° MayJune: average high 85 °F, low 63 °F 85°63° JunJuly: average high 89 °F, low 67 °F 89°67° JulAugust: average high 89 °F, low 65 °F 89°65° AugSeptember: average high 82 °F, low 57 °F 82°57° SepOctober: average high 71 °F, low 45 °F 71°45° OctNovember: average high 59 °F, low 35 °F 59°35° NovDecember: average high 50 °F, low 28 °F 50°28° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″6″January: 2.75 in precipitation, 1.5 in snowfall 2.8❄2 JanFebruary: 2.56 in precipitation, 2.4 in snowfall 2.6❄2 FebMarch: 3.98 in precipitation, 1.3 in snowfall 4.0❄1 MarApril: 5.01 in precipitation 5.0 AprMay: 5.89 in precipitation 5.9 MayJune: 4.31 in precipitation 4.3 JunJuly: 3.80 in precipitation 3.8 JulAugust: 3.17 in precipitation 3.2 AugSeptember: 4.26 in precipitation 4.3 SepOctober: 4.48 in precipitation 4.5 OctNovember: 3.68 in precipitation, 0.2 in snowfall 3.7 NovDecember: 3.07 in precipitation, 1.1 in snowfall 3.1❄1 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Fayetteville Drake Field, AR (6 mi away); precipitation: Fayetteville Drake Field, AR (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

727047a
Fayetteville, AR · 5 mi
727377a
Greenland, AR · 6 mi
727027a
Fayetteville, AR · 7 mi
727537a
Prairie Grove, AR · 8 mi
727707a
Tontitown, AR · 8 mi
727417a
Johnson, AR · 9 mi
727747b
West Fork, AR · 10 mi
727447b
Lincoln, AR · 10 mi

Arkansas planting zones →

Questions about 72730

What planting zone is ZIP code 72730?

ZIP code 72730 (Farmington, AR) 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 Farmington, AR?

The median last spring frost (32 °F) near 72730 is April 15; after May 1 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Fayetteville Drake Field station.

When is the first frost in Farmington, AR?

The median first fall frost near 72730 is October 21, giving a median frost-free growing season of 188 days.

When should I plant tomatoes in 72730?

Start tomato seeds indoors around Feb 18 – Mar 4 and set transplants outside around Apr 22 – May 6, one to three weeks after the median last frost.

How much rain and snow does 72730 get?

About 47 inches of precipitation a year and 7 inches of snowfall (NOAA 1991–2020 normals, Fayetteville Drake Field station).

How hot do summers get in Farmington, AR?

The average high peaks at 89 °F in July, with about 41 days a year at 90 °F or more.

What kind of soil does 72730 have?

The USDA soil survey maps Pickwick at the center of ZIP 72730: silt loam, well drained, pH about 5.0 (strongly acidic).

Did spring come early in Farmington, AR in 2026?

Spring leaf-out near 72730 came on Feb 15 in 2026, 15 days earlier than the 1991–2020 average (Mar 2), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Farmington, AR?

Intermediate onions: the longest day near 72730 is 14 h 37 min, so day-neutral types bulb best; long-day varieties may not bulb fully.