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

Planting zone for 79025 — Dawn, TX

ZIP code 79025 (Dawn, Deaf Smith County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 17 and the first fall frost October 25.

Where ZIP 79025 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.

Zone7a0 to 5 °F
Coldest night−17.8 to −15 °C
Last frostApr 17
First frostOct 25
2012 zone7a

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 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Dawn, 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 Dawn, TX

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 17median — 50% chance of a later frost
Safe for tender plantsMay 1only 10% chance of frost after
First fall frostOctober 25median — 10% chance by Oct 11
Growing season189 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 5 and returns around November 4.

From the NOAA station Hereford, TX — 14 miles away, elevation 3,819 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 79025

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 6 – Mar 20
SpinachSow outdoors · Mar 6 – Mar 27
Broccoli, cabbageStart indoors · Feb 6 – Feb 20
Broccoli, cabbageTransplant · Mar 27 – Apr 10
Onion setsPlant outdoors · Mar 20 – Apr 3
PotatoesPlant outdoors · Mar 27 – Apr 10
LettuceSow outdoors · Mar 20 – Apr 3
Carrots, beetsSow outdoors · Mar 27 – Apr 10
TomatoesStart indoors · Feb 20 – Mar 6
TomatoesTransplant · Apr 24 – May 8
Peppers, eggplantStart indoors · Feb 6 – Feb 20
Peppers, eggplantTransplant · May 1 – May 15
BeansSow outdoors · Apr 24 – May 8
Sweet cornSow outdoors · Apr 24 – May 8
Cucumbers, squashSow outdoors · Apr 24 – May 8
Fall lettuce, spinachSow outdoors · Aug 30 – Sep 13
GarlicPlant cloves · Oct 11 – Nov 15
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 17) and first fall frost (Oct 25) 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 79025 came on Feb 14 — 13 days earlier than the 1991–2020 average (Feb 27).

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 Dawn, TX

The soil mapped at the center of ZIP 79025 is Pullman — clay loam, well drained.

TextureClay loamholds water and nutrients; slow to drain and warm up
pH7.3neutral; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2.5%moderate
Hydrologic groupCwater soaks in slowly
Farmland classprime farmlandUSDA classification

Map unit: Pullman 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 79025; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Dawn, TX

Summer high92 °Faverage high, July
Winter low23 °Faverage low, January
Hot days77days a year at 90 °F or more
Freezing nights118nights a year at 32 °F or less
Growing degree days4,264base 50 °F — the season’s usable heat
Longest day14 h 30 mindaylight on June 21
Shortest day9 h 48 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation17.8 inper year, rain and melted snow
Snowfall16 inper year; 10 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 51 °F, low 23 °F 51°23° JanFebruary: average high 56 °F, low 25 °F 56°25° FebMarch: average high 64 °F, low 32 °F 64°32° MarApril: average high 72 °F, low 40 °F 72°40° AprMay: average high 81 °F, low 50 °F 81°50° MayJune: average high 90 °F, low 61 °F 90°61° JunJuly: average high 92 °F, low 65 °F 92°65° JulAugust: average high 91 °F, low 64 °F 91°64° AugSeptember: average high 84 °F, low 56 °F 84°56° SepOctober: average high 73 °F, low 43 °F 73°43° OctNovember: average high 60 °F, low 31 °F 60°31° NovDecember: average high 51 °F, low 24 °F 51°24° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″January: 0.52 in precipitation, 4 in snowfall 0.5❄4 JanFebruary: 0.53 in precipitation, 1.6 in snowfall 0.5❄2 FebMarch: 1.14 in precipitation, 2.7 in snowfall 1.1❄3 MarApril: 1.04 in precipitation, 0.4 in snowfall 1.0 AprMay: 1.81 in precipitation, 0.1 in snowfall 1.8 MayJune: 2.62 in precipitation 2.6 JunJuly: 2.46 in precipitation 2.5 JulAugust: 2.86 in precipitation 2.9 AugSeptember: 1.64 in precipitation 1.6 SepOctober: 1.80 in precipitation, 0.2 in snowfall 1.8 OctNovember: 0.59 in precipitation, 2.6 in snowfall 0.6❄3 NovDecember: 0.79 in precipitation, 4.3 in snowfall 0.8❄4 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Hereford, TX (14 mi away); precipitation: Umbarger, TX (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7a.

790917a
Umbarger, TX · 8 mi
790127a
Bushland, TX · 13 mi
790987a
Wildorado, TX · 14 mi
791197a
Amarillo, TX · 15 mi
790157a
Canyon, TX · 17 mi
791217a
Amarillo, TX · 22 mi
790427a
Happy, TX · 23 mi
791147a
Amarillo, TX · 23 mi

Texas planting zones →

Questions about 79025

What planting zone is ZIP code 79025?

ZIP code 79025 (Dawn, TX) is in USDA hardiness zone 7a on the 2023 map: the coldest night of an average winter reaches 0 to 5 °F (−17.8 to −15 °C).

When is the last frost in Dawn, TX?

The median last spring frost (32 °F) near 79025 is April 17; after May 1 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Hereford station.

When is the first frost in Dawn, TX?

The median first fall frost near 79025 is October 25, giving a median frost-free growing season of 189 days.

When should I plant tomatoes in 79025?

Start tomato seeds indoors around Feb 20 – Mar 6 and set transplants outside around Apr 24 – May 8, one to three weeks after the median last frost.

How much rain and snow does 79025 get?

About 17.8 inches of precipitation a year and 16 inches of snowfall (NOAA 1991–2020 normals, Umbarger station).

How hot do summers get in Dawn, TX?

The average high peaks at 92 °F in July, with about 77 days a year at 90 °F or more.

What kind of soil does 79025 have?

The USDA soil survey maps Pullman at the center of ZIP 79025: clay loam, well drained, pH about 7.3 (neutral).

Did spring come early in Dawn, TX in 2026?

Spring leaf-out near 79025 came on Feb 14 in 2026, 13 days earlier than the 1991–2020 average (Feb 27), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Dawn, TX?

Intermediate onions: the longest day near 79025 is 14 h 30 min, so day-neutral types bulb best; long-day varieties may not bulb fully.