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

Planting zone for 87729 — Miami, NM

ZIP code 87729 (Miami, Colfax County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is May 11 and the first fall frost October 3.

Where ZIP 87729 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 frostMay 11

First frostOct 3

2012 zone5b

Was 5b 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 6a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Miami, NM…

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 Miami, NM

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMay 11median — 50% chance of a later frost

Safe for tender plantsMay 25only 10% chance of frost after

First fall frostOctober 3median — 10% chance by Sep 21

Growing season143 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 1 and returns around October 12.

From the NOAA station Cimarron 4 Sw, NM — 13 miles away, elevation 6,539 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 87729

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Mar 30 – Apr 13

SpinachSow outdoors · Mar 30 – Apr 20

Broccoli, cabbageStart indoors · Mar 2 – Mar 16

Broccoli, cabbageTransplant · Apr 20 – May 4

Onion setsPlant outdoors · Apr 13 – Apr 27

PotatoesPlant outdoors · Apr 20 – May 4

LettuceSow outdoors · Apr 13 – Apr 27

Carrots, beetsSow outdoors · Apr 20 – May 4

TomatoesStart indoors · Mar 16 – Mar 30

TomatoesTransplant · May 18 – Jun 1

Peppers, eggplantStart indoors · Mar 2 – Mar 16

Peppers, eggplantTransplant · May 25 – Jun 8

BeansSow outdoors · May 18 – Jun 1

Sweet cornSow outdoors · May 18 – Jun 1

Cucumbers, squashSow outdoors · May 18 – Jun 1

Fall lettuce, spinachSow outdoors · Aug 8 – Aug 22

GarlicPlant cloves · Sep 19 – Oct 24

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 11) and first fall frost (Oct 3) 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 87729 came on Feb 28 — 23 days earlier than the 1991–2020 average (Mar 23).

average
Mar 232026
Feb 28

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 Miami, NM

The soil mapped at the center of ZIP 87729 is Aridic Argiustolls — very flaggy loam, well drained.

TextureVery flaggy loama good balance for most vegetables

pH6.8neutral; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter1.5%low — add compost

Hydrologic groupCwater soaks in slowly

Farmland classNot prime farmlandUSDA classification

Map unit: Aridic Argiustolls-Rock outcrop association, steep.

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 87729; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Miami, NM

Summer high84 °Faverage high, July

Winter low17 °Faverage low, December

Hot days10days a year at 90 °F or more

Freezing nights167nights a year at 32 °F or less

Growing degree days2,317base 50 °F — the season’s usable heat

Longest day14 h 38 mindaylight on June 21

Shortest day9 h 41 mindaylight on December 21

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

Precipitation17.2 inper year, rain and melted snow

Snowfall40 inper year; 12 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: Cimarron 4 Sw, NM (13 mi away); precipitation: Cimarron 4 Sw, NM (13 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6a.

Wagon Mound, NM · 23 mi

877106a

Angel Fire, NM · 24 mi

877286a

Maxwell, NM · 24 mi

877356a

Ojo Feliz, NM · 24 mi

877496a

Ute Park, NM · 26 mi

New Mexico planting zones →

Questions about 87729

What planting zone is ZIP code 87729?

ZIP code 87729 (Miami, NM) 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 Miami, NM?

The median last spring frost (32 °F) near 87729 is May 11; after May 25 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Cimarron 4 Sw station.

When is the first frost in Miami, NM?

The median first fall frost near 87729 is October 3, giving a median frost-free growing season of 143 days.

When should I plant tomatoes in 87729?

Start tomato seeds indoors around Mar 16 – Mar 30 and set transplants outside around May 18 – Jun 1, one to three weeks after the median last frost.

How much rain and snow does 87729 get?

About 17.2 inches of precipitation a year and 40 inches of snowfall (NOAA 1991–2020 normals, Cimarron 4 Sw station).

How hot do summers get in Miami, NM?

The average high peaks at 84 °F in July, with about 10 days a year at 90 °F or more.

What kind of soil does 87729 have?

The USDA soil survey maps Aridic Argiustolls at the center of ZIP 87729: very flaggy loam, well drained, pH about 6.8 (neutral).

Did spring come early in Miami, NM in 2026?

Spring leaf-out near 87729 came on Feb 28 in 2026, 23 days earlier than the 1991–2020 average (Mar 23), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Miami, NM?

Intermediate onions: the longest day near 87729 is 14 h 38 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 87729 change?

Yes. The 2012 USDA map put 87729 in zone 5b; the 2023 map puts it in zone 6a. The newer map uses 1991–2020 data and more weather stations.