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

Planting zone for 77574 — League City, TX

ZIP code 77574 (League City, Galveston County) is in USDA zone 9b: the coldest winter night averages 25 to 30 °F. The median last spring frost is January 31 and the first fall frost December 14.

Where ZIP 77574 is

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.

Zone9b25 to 30 °F
Coldest night−3.9 to −1.1 °C
Last frostJan 31
First frostDec 14
2012 zone9a

Was 9a 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 9b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for League City, 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 League City, TX

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostJanuary 31median — 50% chance of a later frost
Safe for tender plantsMarch 5only 10% chance of frost after
First fall frostDecember 14median — 10% chance by Nov 19
Growing season317 daysfrost-free, median

A hard freeze (28 °F) usually ends around January 17 and returns around January 3.

From the NOAA station Houston Nwso, TX — 3 miles away, elevation 20 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 77574

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Dec 20 – Jan 3
SpinachSow outdoors · Dec 20 – Jan 10
Broccoli, cabbageStart indoors · Nov 22 – Dec 6
Broccoli, cabbageTransplant · Jan 10 – Jan 24
Onion setsPlant outdoors · Jan 3 – Jan 17
PotatoesPlant outdoors · Jan 10 – Jan 24
LettuceSow outdoors · Jan 3 – Jan 17
Carrots, beetsSow outdoors · Jan 10 – Jan 24
TomatoesStart indoors · Dec 6 – Dec 20
TomatoesTransplant · Feb 7 – Feb 21
Peppers, eggplantStart indoors · Nov 22 – Dec 6
Peppers, eggplantTransplant · Feb 14 – Feb 28
BeansSow outdoors · Feb 7 – Feb 21
Sweet cornSow outdoors · Feb 7 – Feb 21
Cucumbers, squashSow outdoors · Feb 7 – Feb 21
Fall lettuce, spinachSow outdoors · Oct 19 – Nov 2
GarlicPlant cloves · Nov 30 – Jan 4
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Jan 31) and first fall frost (Dec 14) 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 77574 came on Jan 10 — 12 days earlier than the 1991–2020 average (Jan 22).

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 9b in Texas

646 plants native to the lower 48 states, recorded in Texas, and rated by the USDA to survive 25 °F or colder — the bottom of zone 9b. Each links to its USDA PLANTS profile.

Trees 72

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °FArizona cypress50 ft · blooms spring · low shade tolerance · to −23 °FArizona walnut50 ft · blooms late spring · high shade tolerance · to −33 °F

Shrubs 142

alderleaf mountain mahogany15 ft · blooms late spring · medium shade tolerance · to −41 °Faloe yucca15 ft · blooms early summer · medium shade tolerance · to −1 °FAmerican beautyberry6 ft · blooms early summer · medium shade tolerance · to −8 °FAmerican holly40 ft · blooms mid spring · low shade tolerance · to −20 °FAmerican hornbeam30 ft · blooms mid spring · low shade tolerance · to −34 °FAmerican snowbell10 ft · blooms spring · medium shade tolerance · to −16 °F

Wildflowers & perennials 212

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine mountainsorrel1 ft · blooms mid summer · medium shade tolerance · to −43 °FAmerican bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican century plant6 ft · blooms indeterminate · high shade tolerance · to 12 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °FAmerican licorice4 ft · blooms late spring · medium shade tolerance · to −38 °F

Grasses 197

alkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °FAmerican cupscale3 ft · blooms early summer · high shade tolerance · to −18 °FArizona cottontop4 ft · blooms late summer · high shade tolerance · to −13 °FArizona fescue2 ft · blooms late spring · high shade tolerance · to −23 °FArizona threeawn2 ft · blooms mid summer · high shade tolerance · to −3 °Fautumn bluegrass1.5 ft · blooms late spring · medium shade tolerance · to −8 °F

Vines 14

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °FAmerican wisteria50 ft · blooms spring · low shade tolerance · to −3 °Fcatbird grape30 ft · blooms late spring · medium shade tolerance · to −13 °Fcupseed30 ft · blooms late spring · low shade tolerance · to −3 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °F

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 League City, TX.

Soil in League City, TX

The soil mapped at the center of ZIP 77574 is Mocarey — loam, moderately well drained.

TextureLoama good balance for most vegetables
pH7.3neutral; most vegetables like 6.0–7.0
DrainageModerately well drainednatural drainage class
Organic matter1.5%low — add compost
Hydrologic groupC/Dslow when drained; wet otherwise
Farmland classprime farmlandUSDA classification

Map unit: Mocarey rarely flooded-Leton occasionally flooded complex, 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 77574; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in League City, TX

Summer high92 °Faverage high, July
Winter low46 °Faverage low, January
Hot days76days a year at 90 °F or more
Freezing nights9nights a year at 32 °F or less
Growing degree days7,660base 50 °F — the season’s usable heat
Longest day14 h 02 mindaylight on June 21
Shortest day10 h 15 mindaylight on December 21
Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb
Precipitation58.4 inper year, rain and melted snow

Average high and low, by month

40°50°60°70°80°90°100°January: average high 64 °F, low 46 °F 64°46° JanFebruary: average high 67 °F, low 50 °F 67°50° FebMarch: average high 73 °F, low 56 °F 73°56° MarApril: average high 78 °F, low 61 °F 78°61° AprMay: average high 85 °F, low 69 °F 85°69° MayJune: average high 90 °F, low 75 °F 90°75° JunJuly: average high 92 °F, low 76 °F 92°76° JulAugust: average high 92 °F, low 76 °F 92°76° AugSeptember: average high 88 °F, low 72 °F 88°72° SepOctober: average high 82 °F, low 63 °F 82°63° OctNovember: average high 73 °F, low 53 °F 73°53° NovDecember: average high 66 °F, low 47 °F 66°47° Dec

Precipitation by month inches

0″2″4″6″January: 5.28 in precipitation 5.3 JanFebruary: 3.08 in precipitation 3.1 FebMarch: 3.44 in precipitation 3.4 MarApril: 4.03 in precipitation 4.0 AprMay: 5.23 in precipitation 5.2 MayJune: 5.22 in precipitation 5.2 JunJuly: 5.09 in precipitation 5.1 JulAugust: 6.11 in precipitation 6.1 AugSeptember: 6.56 in precipitation 6.6 SepOctober: 5.29 in precipitation 5.3 OctNovember: 4.49 in precipitation 4.5 NovDecember: 4.59 in precipitation 4.6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Houston Nwso, TX (3 mi away); precipitation: League City 2.1 Nne, TX (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 9b.

775739b
League City, TX · 2 mi
775659b
Kemah, TX · 2 mi
770589b
Houston, TX · 4 mi
775189b
Bacliff, TX · 4 mi
775399b
Dickinson, TX · 4 mi
775089b
Pasadena, TX · 5 mi
775869b
Seabrook, TX · 5 mi
775989b
Webster, TX · 5 mi

All 2 ZIP codes in League City → · Texas planting zones →

Questions about 77574

What planting zone is ZIP code 77574?

ZIP code 77574 (League City, TX) is in USDA hardiness zone 9b on the 2023 map: the coldest night of an average winter reaches 25 to 30 °F (−3.9 to −1.1 °C).

When is the last frost in League City, TX?

The median last spring frost (32 °F) near 77574 is January 31; after March 5 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Houston Nwso station.

When is the first frost in League City, TX?

The median first fall frost near 77574 is December 14, giving a median frost-free growing season of 317 days.

When should I plant tomatoes in 77574?

Start tomato seeds indoors around Dec 6 – Dec 20 and set transplants outside around Feb 7 – Feb 21, one to three weeks after the median last frost.

How much rain and snow does 77574 get?

About 58.4 inches of precipitation a year (NOAA 1991–2020 normals, League City 2.1 Nne station).

How hot do summers get in League City, TX?

The average high peaks at 92 °F in July, with about 76 days a year at 90 °F or more.

What kind of soil does 77574 have?

The USDA soil survey maps Mocarey at the center of ZIP 77574: loam, moderately well drained, pH about 7.3 (neutral).

Did spring come early in League City, TX in 2026?

Spring leaf-out near 77574 came on Jan 10 in 2026, 12 days earlier than the 1991–2020 average (Jan 22), according to the USA National Phenology Network Spring Index.

What kind of onions grow in League City, TX?

Short-day onions: the longest day near 77574 is 14 h 02 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 77574 change?

Yes. The 2012 USDA map put 77574 in zone 9a; the 2023 map puts it in zone 9b. The newer map uses 1991–2020 data and more weather stations.