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

Planting zone for 88058 — San Miguel, NM

ZIP code 88058 (San Miguel, Doña Ana County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 12 and the first fall frost November 13.

Where ZIP 88058 is

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.

Zone8b15 to 20 °F

Coldest night−9.4 to −6.7 °C

Last frostMar 12

First frostNov 13

2012 zone8a

Was 8a 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 8b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for San Miguel, 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 San Miguel, NM

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 12median — 50% chance of a later frost

Safe for tender plantsApril 2only 10% chance of frost after

First fall frostNovember 13median — 10% chance by Oct 30

Growing season241 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 26 and returns around November 24.

From the NOAA station State Univ, NM — 9 miles away, elevation 3,888 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 88058

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Jan 29 – Feb 12

SpinachSow outdoors · Jan 29 – Feb 19

Broccoli, cabbageStart indoors · Jan 1 – Jan 15

Broccoli, cabbageTransplant · Feb 19 – Mar 5

Onion setsPlant outdoors · Feb 12 – Feb 26

PotatoesPlant outdoors · Feb 19 – Mar 5

LettuceSow outdoors · Feb 12 – Feb 26

Carrots, beetsSow outdoors · Feb 19 – Mar 5

TomatoesStart indoors · Jan 15 – Jan 29

TomatoesTransplant · Mar 19 – Apr 2

Peppers, eggplantStart indoors · Jan 1 – Jan 15

Peppers, eggplantTransplant · Mar 26 – Apr 9

BeansSow outdoors · Mar 19 – Apr 2

Sweet cornSow outdoors · Mar 19 – Apr 2

Cucumbers, squashSow outdoors · Mar 19 – Apr 2

Fall lettuce, spinachSow outdoors · Sep 18 – Oct 2

GarlicPlant cloves · Oct 30 – Dec 4

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 12) and first fall frost (Nov 13) 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 88058 came on Feb 5 — about the same time as the 1991–2020 average (Feb 6).

average
Feb 62026
Feb 5

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 8b in New Mexico

551 plants native to the lower 48 states, recorded in New Mexico, and rated by the USDA to survive 15 °F or colder — the bottom of zone 8b. 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 San Miguel, NM.

Soil in San Miguel, NM

The soil mapped at the center of ZIP 88058 is Glendale — clay loam, well drained.

TextureClay loamholds water and nutrients; slow to drain and warm up

pH8.5alkaline; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter0.7%low — add compost

Hydrologic groupCwater soaks in slowly

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Glendale clay loam, 0 to 1 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 88058; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in San Miguel, NM

Summer high96 °Faverage high, June

Winter low30 °Faverage low, January

Hot days109days a year at 90 °F or more

Freezing nights69nights a year at 32 °F or less

Growing degree days5,425base 50 °F — the season’s usable heat

Longest day14 h 15 mindaylight on June 21

Shortest day10 h 02 mindaylight on December 21

Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb

Precipitation9.8 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: State Univ, NM (9 mi away); precipitation: Mesquite 3.1 Nw, NM (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

880478b

Mesilla Park, NM · 4 mi

Las Cruces, NM · 9 mi

880468b

Mesilla, NM · 9 mi

880278b

Chamberino, NM · 9 mi

880248b

Berino, NM · 9 mi

880018b

Las Cruces, NM · 9 mi

New Mexico planting zones →

Questions about 88058

What planting zone is ZIP code 88058?

ZIP code 88058 (San Miguel, NM) is in USDA hardiness zone 8b on the 2023 map: the coldest night of an average winter reaches 15 to 20 °F (−9.4 to −6.7 °C).

When is the last frost in San Miguel, NM?

The median last spring frost (32 °F) near 88058 is March 12; after April 2 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, State Univ station.

When is the first frost in San Miguel, NM?

The median first fall frost near 88058 is November 13, giving a median frost-free growing season of 241 days.

When should I plant tomatoes in 88058?

Start tomato seeds indoors around Jan 15 – Jan 29 and set transplants outside around Mar 19 – Apr 2, one to three weeks after the median last frost.

How much rain and snow does 88058 get?

About 9.8 inches of precipitation a year (NOAA 1991–2020 normals, Mesquite 3.1 Nw station).

How hot do summers get in San Miguel, NM?

The average high peaks at 96 °F in June, with about 109 days a year at 90 °F or more.

What kind of soil does 88058 have?

The USDA soil survey maps Glendale at the center of ZIP 88058: clay loam, well drained, pH about 8.5 (alkaline).

Did spring come early in San Miguel, NM in 2026?

Spring leaf-out near 88058 came on Feb 5 in 2026, about the same as the 1991–2020 average (Feb 6), according to the USA National Phenology Network Spring Index.

What kind of onions grow in San Miguel, NM?

Short-day onions: the longest day near 88058 is 14 h 15 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 88058 change?

Yes. The 2012 USDA map put 88058 in zone 8a; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.