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

Planting zone for 78347 — Chapman Ranch, TX

ZIP code 78347 (Chapman Ranch, Nueces County) is in USDA zone 9b: the coldest winter night averages 25 to 30 °F.

Where ZIP 78347 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.

Zone9b25 to 30 °F
Coldest night−3.9 to −1.1 °C
Last frostrare
First frostrare
2012 zone9b

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 9b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Chapman Ranch, 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

A 32 °F frost doesn't happen here in most winters. At the nearest station (NOAA station C C Botanical Gardens, TX — 8 miles away, elevation 16 ft) the median growing season is 337 days. When frost does come, it is a midwinter night or two; cover tender plants when a freeze is forecast.

Frost data: NOAA NCEI U.S. Climate Normals 1991–2020.

When spring arrived in 2026

In 2026, spring leaf-out near 78347 came on Jan 10 — 9 days earlier than the 1991–2020 average (Jan 19).

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 Chapman Ranch, TX

The soil mapped at the center of ZIP 78347 is Victoria — clay, well drained.

TextureClayholds water and nutrients; slow to drain and warm up
pH8.1alkaline; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2%moderate
Hydrologic groupCwater soaks in slowly
Farmland classprime farmlandUSDA classification

Map unit: Victoria clay 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 78347; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Chapman Ranch, TX

Summer high91 °Faverage high, August
Winter low48 °Faverage low, January
Hot days108days a year at 90 °F or more
Freezing nights3nights a year at 32 °F or less
Growing degree days8,018base 50 °F — the season’s usable heat
Longest day13 h 53 mindaylight on June 21
Shortest day10 h 24 mindaylight on December 21
Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb
Precipitation32.3 inper year, rain and melted snow

Average high and low, by month

40°50°60°70°80°90°100°January: average high 65 °F, low 48 °F 65°48° JanFebruary: average high 69 °F, low 52 °F 69°52° FebMarch: average high 75 °F, low 58 °F 75°58° MarApril: average high 79 °F, low 64 °F 79°64° AprMay: average high 84 °F, low 70 °F 84°70° MayJune: average high 90 °F, low 75 °F 90°75° JunJuly: average high 90 °F, low 76 °F 90°76° JulAugust: average high 91 °F, low 76 °F 91°76° AugSeptember: average high 88 °F, low 73 °F 88°73° SepOctober: average high 83 °F, low 66 °F 83°66° OctNovember: average high 74 °F, low 57 °F 74°57° NovDecember: average high 68 °F, low 50 °F 68°50° Dec

Precipitation by month inches

0″2″4″6″January: 1.83 in precipitation 1.8 JanFebruary: 1.52 in precipitation 1.5 FebMarch: 1.98 in precipitation 2.0 MarApril: 1.83 in precipitation 1.8 AprMay: 3.70 in precipitation 3.7 MayJune: 4.06 in precipitation 4.1 JunJuly: 2.33 in precipitation 2.3 JulAugust: 1.78 in precipitation 1.8 AugSeptember: 6.53 in precipitation 6.5 SepOctober: 2.67 in precipitation 2.7 OctNovember: 2.28 in precipitation 2.3 NovDecember: 1.76 in precipitation, 0.3 in snowfall 1.8 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: C C Botanical Gardens, TX (8 mi away); precipitation: C C Botanical Gardens, TX (8 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

7 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

784159b
Corpus Christi, TX · 6 mi
7841310a
Corpus Christi, TX · 9 mi
7841410a
Corpus Christi, TX · 9 mi
7841710a
Corpus Christi, TX · 11 mi
7841110a
Corpus Christi, TX · 12 mi
7841210a
Corpus Christi, TX · 12 mi
7841610a
Corpus Christi, TX · 13 mi
7847210a
Corpus Christi, TX · 13 mi

Texas planting zones →

Questions about 78347

What planting zone is ZIP code 78347?

ZIP code 78347 (Chapman Ranch, 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).

How much rain and snow does 78347 get?

About 32.3 inches of precipitation a year (NOAA 1991–2020 normals, C C Botanical Gardens station).

How hot do summers get in Chapman Ranch, TX?

The average high peaks at 91 °F in August, with about 108 days a year at 90 °F or more.

What kind of soil does 78347 have?

The USDA soil survey maps Victoria at the center of ZIP 78347: clay, well drained, pH about 8.1 (alkaline).

Did spring come early in Chapman Ranch, TX in 2026?

Spring leaf-out near 78347 came on Jan 10 in 2026, 9 days earlier than the 1991–2020 average (Jan 19), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Chapman Ranch, TX?

Short-day onions: the longest day near 78347 is 13 h 53 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.