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

Planting zone for 75439 — Ector, TX

ZIP code 75439 (Ector, Fannin County) is in USDA zone 8a: the coldest winter night averages 10 to 15 °F. The median last spring frost is March 16 and the first fall frost November 13.

Where ZIP 75439 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 16

First frostNov 13

2012 zone8a

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 8a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Ector, 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 Ector, TX

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 16median — 50% chance of a later frost

Safe for tender plantsApril 4only 10% chance of frost after

First fall frostNovember 13median — 10% chance by Oct 29

Growing season242 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 4 and returns around November 24.

From the NOAA station Bonham 3nne, TX — 9 miles away, elevation 591 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 75439

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 2 – Feb 16

SpinachSow outdoors · Feb 2 – Feb 23

Broccoli, cabbageStart indoors · Jan 5 – Jan 19

Broccoli, cabbageTransplant · Feb 23 – Mar 9

Onion setsPlant outdoors · Feb 16 – Mar 2

PotatoesPlant outdoors · Feb 23 – Mar 9

LettuceSow outdoors · Feb 16 – Mar 2

Carrots, beetsSow outdoors · Feb 23 – Mar 9

TomatoesStart indoors · Jan 19 – Feb 2

TomatoesTransplant · Mar 23 – Apr 6

Peppers, eggplantStart indoors · Jan 5 – Jan 19

Peppers, eggplantTransplant · Mar 30 – Apr 13

BeansSow outdoors · Mar 23 – Apr 6

Sweet cornSow outdoors · Mar 23 – Apr 6

Cucumbers, squashSow outdoors · Mar 23 – Apr 6

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 16) 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 75439 came on Feb 9 — about the same time as the 1991–2020 average (Feb 10).

average
Feb 102026
Feb 9

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 8a in Texas

601 plants native to the lower 48 states, recorded in Texas, and rated by the USDA to survive 10 °F or colder — the bottom of zone 8a. 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 Ector, TX.

Soil in Ector, TX

The soil mapped at the center of ZIP 75439 is Fairlie — clay, moderately well drained.

TextureClayholds water and nutrients; slow to drain and warm up

pH7.9alkaline; most vegetables like 6.0–7.0

DrainageModerately well drainednatural drainage class

Organic matter2.5%moderate

Hydrologic groupDwater soaks in very slowly

Farmland classprime farmlandUSDA classification

Map unit: Fairlie-Dalco complex, 1 to 3 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 75439; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Ector, TX

Summer high94 °Faverage high, July

Winter low33 °Faverage low, January

Hot days78days a year at 90 °F or more

Freezing nights55nights a year at 32 °F or less

Growing degree days5,764base 50 °F — the season’s usable heat

Longest day14 h 23 mindaylight on June 21

Shortest day9 h 55 mindaylight on December 21

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

Precipitation46.8 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: Bonham 3nne, TX (9 mi away); precipitation: Ravenna 1.7 Se, TX (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8a.

Whitewright, TX · 8 mi

Texas planting zones →

Questions about 75439

What planting zone is ZIP code 75439?

ZIP code 75439 (Ector, 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 Ector, TX?

The median last spring frost (32 °F) near 75439 is March 16; after April 4 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Bonham 3nne station.

When is the first frost in Ector, TX?

The median first fall frost near 75439 is November 13, giving a median frost-free growing season of 242 days.

When should I plant tomatoes in 75439?

Start tomato seeds indoors around Jan 19 – Feb 2 and set transplants outside around Mar 23 – Apr 6, one to three weeks after the median last frost.

How much rain and snow does 75439 get?

About 46.8 inches of precipitation a year (NOAA 1991–2020 normals, Ravenna 1.7 Se station).

How hot do summers get in Ector, TX?

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 75439 have?

The USDA soil survey maps Fairlie at the center of ZIP 75439: clay, moderately well drained, pH about 7.9 (alkaline).

Did spring come early in Ector, TX in 2026?

Spring leaf-out near 75439 came on Feb 9 in 2026, about the same as the 1991–2020 average (Feb 10), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Ector, TX?

Intermediate onions: the longest day near 75439 is 14 h 23 min, so day-neutral types bulb best; long-day varieties may not bulb fully.