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

Planting zone for 75571 — Omaha, TX

ZIP code 75571 (Omaha, Morris County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 24 and the first fall frost November 7.

Where ZIP 75571 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.

Zone8b15 to 20 °F
Coldest night−9.4 to −6.7 °C
Last frostMar 24
First frostNov 7
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 Omaha, 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 Omaha, TX

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 24median — 50% chance of a later frost
Safe for tender plantsApril 13only 10% chance of frost after
First fall frostNovember 7median — 10% chance by Oct 25
Growing season230 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 8 and returns around November 19.

From the NOAA station Mt Pleasant, TX — 14 miles away, elevation 427 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 75571

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 10 – Feb 24
SpinachSow outdoors · Feb 10 – Mar 3
Broccoli, cabbageStart indoors · Jan 13 – Jan 27
Broccoli, cabbageTransplant · Mar 3 – Mar 17
Onion setsPlant outdoors · Feb 24 – Mar 10
PotatoesPlant outdoors · Mar 3 – Mar 17
LettuceSow outdoors · Feb 24 – Mar 10
Carrots, beetsSow outdoors · Mar 3 – Mar 17
TomatoesStart indoors · Jan 27 – Feb 10
TomatoesTransplant · Mar 31 – Apr 14
Peppers, eggplantStart indoors · Jan 13 – Jan 27
Peppers, eggplantTransplant · Apr 7 – Apr 21
BeansSow outdoors · Mar 31 – Apr 14
Sweet cornSow outdoors · Mar 31 – Apr 14
Cucumbers, squashSow outdoors · Mar 31 – Apr 14
Fall lettuce, spinachSow outdoors · Sep 12 – Sep 26
GarlicPlant cloves · Oct 24 – Nov 28
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 24) and first fall frost (Nov 7) 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 75571 came on Feb 8 — about the same time as the 1991–2020 average (Feb 6).

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 Omaha, TX

The soil mapped at the center of ZIP 75571 is Wolfpen — loamy fine sand, well drained.

TextureLoamy fine sanddrains and warms fast; dries out and needs more feeding
pH5.5moderately acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.25%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Wolfpen loamy fine sand, 2 to 5 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 75571; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Omaha, TX

Summer high94 °Faverage high, August
Winter low32 °Faverage low, January
Hot days99days a year at 90 °F or more
Freezing nights61nights a year at 32 °F or less
Growing degree days5,718base 50 °F — the season’s usable heat
Longest day14 h 21 mindaylight on June 21
Shortest day9 h 57 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation48.6 inper year, rain and melted snow
Snowfall2 inper year; 1 days with snow on the ground

Average high and low, by month

20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 56 °F, low 32 °F 56°32° JanFebruary: average high 60 °F, low 36 °F 60°36° FebMarch: average high 68 °F, low 43 °F 68°43° MarApril: average high 75 °F, low 50 °F 75°50° AprMay: average high 82 °F, low 60 °F 82°60° MayJune: average high 90 °F, low 68 °F 90°68° JunJuly: average high 93 °F, low 71 °F 93°71° JulAugust: average high 94 °F, low 71 °F 94°71° AugSeptember: average high 88 °F, low 63 °F 88°63° SepOctober: average high 78 °F, low 51 °F 78°51° OctNovember: average high 66 °F, low 41 °F 66°41° NovDecember: average high 58 °F, low 34 °F 58°34° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″6″January: 3.56 in precipitation, 0.6 in snowfall 3.6❄1 JanFebruary: 4.18 in precipitation, 1 in snowfall 4.2❄1 FebMarch: 4.36 in precipitation, 0.1 in snowfall 4.4 MarApril: 4.55 in precipitation 4.5 AprMay: 5.24 in precipitation 5.2 MayJune: 4.32 in precipitation 4.3 JunJuly: 2.90 in precipitation 2.9 JulAugust: 2.66 in precipitation 2.7 AugSeptember: 3.62 in precipitation 3.6 SepOctober: 4.61 in precipitation 4.6 OctNovember: 3.78 in precipitation 3.8 NovDecember: 4.79 in precipitation, 0.2 in snowfall 4.8 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Mt Pleasant, TX (14 mi away); precipitation: Mt Pleasant, TX (14 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

755588b
Cookville, TX · 6 mi
755688b
Naples, TX · 11 mi
754568b
Mount Pleasant, TX · 12 mi
754558b
Mount Pleasant, TX · 12 mi
756368b
Cason, TX · 13 mi
756388b
Daingerfield, TX · 13 mi
755748b
Simms, TX · 15 mi
756568b
Hughes Springs, TX · 18 mi

Texas planting zones →

Questions about 75571

What planting zone is ZIP code 75571?

ZIP code 75571 (Omaha, TX) 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 Omaha, TX?

The median last spring frost (32 °F) near 75571 is March 24; after April 13 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Mt Pleasant station.

When is the first frost in Omaha, TX?

The median first fall frost near 75571 is November 7, giving a median frost-free growing season of 230 days.

When should I plant tomatoes in 75571?

Start tomato seeds indoors around Jan 27 – Feb 10 and set transplants outside around Mar 31 – Apr 14, one to three weeks after the median last frost.

How much rain and snow does 75571 get?

About 48.6 inches of precipitation a year and 2 inches of snowfall (NOAA 1991–2020 normals, Mt Pleasant station).

How hot do summers get in Omaha, TX?

The average high peaks at 94 °F in August, with about 99 days a year at 90 °F or more.

What kind of soil does 75571 have?

The USDA soil survey maps Wolfpen at the center of ZIP 75571: loamy fine sand, well drained, pH about 5.5 (moderately acidic).

Did spring come early in Omaha, TX in 2026?

Spring leaf-out near 75571 came on Feb 8 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 Omaha, TX?

Intermediate onions: the longest day near 75571 is 14 h 21 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 75571 change?

Yes. The 2012 USDA map put 75571 in zone 8a; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.