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

Planting zone for 76092 — Southlake, TX

ZIP code 76092 (Southlake, Tarrant County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 14 and the first fall frost November 17.

Where ZIP 76092 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 14
First frostNov 17
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 Southlake, 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 Southlake, TX

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 14median — 50% chance of a later frost
Safe for tender plantsApril 3only 10% chance of frost after
First fall frostNovember 17median — 10% chance by Nov 2
Growing season249 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 1 and returns around November 29.

From the NOAA station Grapevine Dam, TX — 6 miles away, elevation 584 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 76092

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Jan 31 – Feb 14
SpinachSow outdoors · Jan 31 – Feb 21
Broccoli, cabbageStart indoors · Jan 3 – Jan 17
Broccoli, cabbageTransplant · Feb 21 – Mar 7
Onion setsPlant outdoors · Feb 14 – Feb 28
PotatoesPlant outdoors · Feb 21 – Mar 7
LettuceSow outdoors · Feb 14 – Feb 28
Carrots, beetsSow outdoors · Feb 21 – Mar 7
TomatoesStart indoors · Jan 17 – Jan 31
TomatoesTransplant · Mar 21 – Apr 4
Peppers, eggplantStart indoors · Jan 3 – Jan 17
Peppers, eggplantTransplant · Mar 28 – Apr 11
BeansSow outdoors · Mar 21 – Apr 4
Sweet cornSow outdoors · Mar 21 – Apr 4
Cucumbers, squashSow outdoors · Mar 21 – Apr 4
Fall lettuce, spinachSow outdoors · Sep 22 – Oct 6
GarlicPlant cloves · Nov 3 – Dec 8
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 14) and first fall frost (Nov 17) 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 76092 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 Southlake, TX

The soil mapped at the center of ZIP 76092 is Gasil — fine sandy loam, well drained.

TextureFine sandy loamdrains and warms fast; dries out and needs more feeding
pH6.3slightly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.25%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classprime farmlandUSDA classification

Map unit: Gasil fine sandy loam, 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 76092; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Southlake, TX

Summer high96 °Faverage high, August
Winter low34 °Faverage low, January
Hot days104days a year at 90 °F or more
Freezing nights44nights a year at 32 °F or less
Growing degree days6,289base 50 °F — the season’s usable heat
Longest day14 h 20 mindaylight on June 21
Shortest day9 h 58 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation39 inper year, rain and melted snow

Average high and low, by month

20°30°40°50°60°70°80°90°100°110°32 °FJanuary: average high 56 °F, low 34 °F 56°34° JanFebruary: average high 60 °F, low 38 °F 60°38° FebMarch: average high 68 °F, low 45 °F 68°45° MarApril: average high 75 °F, low 54 °F 75°54° AprMay: average high 83 °F, low 63 °F 83°63° MayJune: average high 91 °F, low 71 °F 91°71° JunJuly: average high 95 °F, low 74 °F 95°74° JulAugust: average high 96 °F, low 74 °F 96°74° AugSeptember: average high 89 °F, low 67 °F 89°67° SepOctober: average high 78 °F, low 55 °F 78°55° OctNovember: average high 66 °F, low 45 °F 66°45° NovDecember: average high 58 °F, low 36 °F 58°36° Dec

Precipitation by month inches

0″1″2″3″4″5″January: 2.40 in precipitation 2.4 JanFebruary: 2.59 in precipitation 2.6 FebMarch: 3.23 in precipitation 3.2 MarApril: 3.57 in precipitation 3.6 AprMay: 4.66 in precipitation 4.7 MayJune: 4.55 in precipitation 4.5 JunJuly: 2.28 in precipitation 2.3 JulAugust: 2.29 in precipitation 2.3 AugSeptember: 2.94 in precipitation 2.9 SepOctober: 4.57 in precipitation 4.6 OctNovember: 3.10 in precipitation 3.1 NovDecember: 2.77 in precipitation 2.8 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Grapevine Dam, TX (6 mi away); precipitation: Southlake 1.7 Ne, TX (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

760518b
Grapevine, TX · 4 mi
760998b
Grapevine, TX · 4 mi
760348b
Colleyville, TX · 4 mi
762488b
Keller, TX · 5 mi
750228b
Flower Mound, TX · 5 mi
762628b
Roanoke, TX · 6 mi
761828b
North Richland Hills, TX · 6 mi
752618b
Dallas, TX · 7 mi

Texas planting zones →

Questions about 76092

What planting zone is ZIP code 76092?

ZIP code 76092 (Southlake, 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 Southlake, TX?

The median last spring frost (32 °F) near 76092 is March 14; after April 3 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Grapevine Dam station.

When is the first frost in Southlake, TX?

The median first fall frost near 76092 is November 17, giving a median frost-free growing season of 249 days.

When should I plant tomatoes in 76092?

Start tomato seeds indoors around Jan 17 – Jan 31 and set transplants outside around Mar 21 – Apr 4, one to three weeks after the median last frost.

How much rain and snow does 76092 get?

About 39 inches of precipitation a year (NOAA 1991–2020 normals, Southlake 1.7 Ne station).

How hot do summers get in Southlake, TX?

The average high peaks at 96 °F in August, with about 104 days a year at 90 °F or more.

What kind of soil does 76092 have?

The USDA soil survey maps Gasil at the center of ZIP 76092: fine sandy loam, well drained, pH about 6.3 (slightly acidic).

Did spring come early in Southlake, TX in 2026?

Spring leaf-out near 76092 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 Southlake, TX?

Intermediate onions: the longest day near 76092 is 14 h 20 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 76092 change?

Yes. The 2012 USDA map put 76092 in zone 8a; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.