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

Planting zone for 79527 — Ira, TX

ZIP code 79527 (Ira, Scurry County) is in USDA zone 8a: the coldest winter night averages 10 to 15 °F. The median last spring frost is March 27 and the first fall frost November 10.

Where ZIP 79527 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.

Zone8a10 to 15 °F

Coldest night−12.2 to −9.4 °C

Last frostMar 27

First frostNov 10

2012 zone7b

Was 7b 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 8a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Ira, TX…

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 Ira, TX

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 27median — 50% chance of a later frost

Safe for tender plantsApril 14only 10% chance of frost after

First fall frostNovember 10median — 10% chance by Oct 28

Growing season227 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 10 and returns around November 20.

From the NOAA station Snyder, TX — 14 miles away, elevation 2,320 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 79527

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 13 – Feb 27

SpinachSow outdoors · Feb 13 – Mar 6

Broccoli, cabbageStart indoors · Jan 16 – Jan 30

Broccoli, cabbageTransplant · Mar 6 – Mar 20

Onion setsPlant outdoors · Feb 27 – Mar 13

PotatoesPlant outdoors · Mar 6 – Mar 20

LettuceSow outdoors · Feb 27 – Mar 13

Carrots, beetsSow outdoors · Mar 6 – Mar 20

TomatoesStart indoors · Jan 30 – Feb 13

TomatoesTransplant · Apr 3 – Apr 17

Peppers, eggplantStart indoors · Jan 16 – Jan 30

Peppers, eggplantTransplant · Apr 10 – Apr 24

BeansSow outdoors · Apr 3 – Apr 17

Sweet cornSow outdoors · Apr 3 – Apr 17

Cucumbers, squashSow outdoors · Apr 3 – Apr 17

Fall lettuce, spinachSow outdoors · Sep 15 – Sep 29

GarlicPlant cloves · Oct 27 – Dec 1

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 27) and first fall frost (Nov 10) 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 79527 came on Feb 8 — about the same time as the 1991–2020 average (Feb 8).

average
Feb 82026
Feb 8

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 Ira, TX

The soil mapped at the center of ZIP 79527 is Sagerton — loam, well drained.

TextureLoama good balance for most vegetables

pH7.2neutral; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter1.4%low — add compost

Hydrologic groupCwater soaks in slowly

Farmland classprime farmlandUSDA classification

Map unit: Sagerton 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 79527; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Ira, TX

Summer high96 °Faverage high, July

Winter low29 °Faverage low, January

Hot days101days a year at 90 °F or more

Freezing nights71nights a year at 32 °F or less

Growing degree days5,697base 50 °F — the season’s usable heat

Longest day14 h 18 mindaylight on June 21

Shortest day10 h 00 mindaylight on December 21

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

Precipitation20.6 inper year, rain and melted snow

Snowfall1 inper year

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Snyder, TX (14 mi away); precipitation: Knapp 2 Sw, TX (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8a.

Westbrook, TX · 15 mi

795268a

Hermleigh, TX · 20 mi

795128a

Colorado City, TX · 21 mi

Texas planting zones →

Questions about 79527

What planting zone is ZIP code 79527?

ZIP code 79527 (Ira, TX) is in USDA hardiness zone 8a on the 2023 map: the coldest night of an average winter reaches 10 to 15 °F (−12.2 to −9.4 °C).

When is the last frost in Ira, TX?

The median last spring frost (32 °F) near 79527 is March 27; after April 14 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Snyder station.

When is the first frost in Ira, TX?

The median first fall frost near 79527 is November 10, giving a median frost-free growing season of 227 days.

When should I plant tomatoes in 79527?

Start tomato seeds indoors around Jan 30 – Feb 13 and set transplants outside around Apr 3 – Apr 17, one to three weeks after the median last frost.

How much rain and snow does 79527 get?

About 20.6 inches of precipitation a year and 1 inches of snowfall (NOAA 1991–2020 normals, Knapp 2 Sw station).

How hot do summers get in Ira, TX?

The average high peaks at 96 °F in July, with about 101 days a year at 90 °F or more.

What kind of soil does 79527 have?

The USDA soil survey maps Sagerton at the center of ZIP 79527: loam, well drained, pH about 7.2 (neutral).

Did spring come early in Ira, TX in 2026?

Spring leaf-out near 79527 came on Feb 8 in 2026, about the same as the 1991–2020 average (Feb 8), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Ira, TX?

Short-day onions: the longest day near 79527 is 14 h 18 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 79527 change?

Yes. The 2012 USDA map put 79527 in zone 7b; the 2023 map puts it in zone 8a. The newer map uses 1991–2020 data and more weather stations.