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

Planting zone for 90704 — Avalon, CA

ZIP code 90704 (Avalon, Los Angeles County) is in USDA zone 10b: the coldest winter night averages 35 to 40 °F.

Where ZIP 90704 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.

Zone10b35 to 40 °F
Coldest night1.7 to 4.4 °C
Last frostrare
First frostrare
2012 zone10b

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 10b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Avalon, CA…

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 Torrance Airport, CA — 29 miles away, elevation 89 ft) the median growing season is 365 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 90704 came on Jan 16 — 5 days earlier than the 1991–2020 average (Jan 21).

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 Avalon, CA

The soil mapped at the center of ZIP 90704 is Masthead — gravelly silt loam, well drained.

TextureGravelly silt loama good balance for most vegetables
pH7.7slightly alkaline; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2%moderate
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Masthead-Coastwise-Dewpoint complex, 20 to 55 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 90704; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Avalon, CA

Summer high79 °Faverage high, August
Winter low49 °Faverage low, February
Hot days14days a year at 90 °F or more
Freezing nights0nights a year at 32 °F or less
Growing degree days4,179base 50 °F — the season’s usable heat
Longest day14 h 22 mindaylight on June 21
Shortest day9 h 56 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation12.8 inper year, rain and melted snow

Average high and low, by month

40°50°60°70°80°90°January: average high 62 °F, low 50 °F 62°50° JanFebruary: average high 60 °F, low 49 °F 60°49° FebMarch: average high 61 °F, low 49 °F 61°49° MarApril: average high 64 °F, low 50 °F 64°50° AprMay: average high 67 °F, low 52 °F 67°52° MayJune: average high 70 °F, low 55 °F 70°55° JunJuly: average high 77 °F, low 59 °F 77°59° JulAugust: average high 79 °F, low 62 °F 79°62° AugSeptember: average high 78 °F, low 63 °F 78°63° SepOctober: average high 73 °F, low 58 °F 73°58° OctNovember: average high 67 °F, low 54 °F 67°54° NovDecember: average high 60 °F, low 49 °F 60°49° Dec

Precipitation by month inches

0″1″2″3″4″January: 3.04 in precipitation 3.0 JanFebruary: 2.83 in precipitation 2.8 FebMarch: 1.67 in precipitation 1.7 MarApril: 0.78 in precipitation 0.8 AprMay: 0.36 in precipitation 0.4 MayJune: 0.21 in precipitation 0.2 JunJuly: 0.08 in precipitation 0.1 JulAugust: 0.01 in precipitation 0.0 AugSeptember: 0.12 in precipitation 0.1 SepOctober: 0.48 in precipitation 0.5 OctNovember: 0.97 in precipitation 1.0 NovDecember: 2.22 in precipitation 2.2 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Avalon Catalina Airport, CA (within 1 mile); precipitation: Avalon Catalina Airport, CA (within 1 mile). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 10b.

9073210b
San Pedro, CA · 24 mi
9073110b
San Pedro, CA · 25 mi
9027510b
Rancho Palos Verdes, CA · 25 mi
9027410b
Palos Verdes Peninsula, CA · 27 mi
9080210b
Long Beach, CA · 28 mi
9022410b
Compton, CA · 28 mi
9026710b
Manhattan Beach, CA · 28 mi
9029510b
Marina Del Rey, CA · 28 mi

California planting zones →

Questions about 90704

What planting zone is ZIP code 90704?

ZIP code 90704 (Avalon, CA) is in USDA hardiness zone 10b on the 2023 map: the coldest night of an average winter reaches 35 to 40 °F (1.7 to 4.4 °C).

How much rain and snow does 90704 get?

About 12.8 inches of precipitation a year (NOAA 1991–2020 normals, Avalon Catalina Airport station).

How hot do summers get in Avalon, CA?

The average high peaks at 79 °F in August, with about 14 days a year at 90 °F or more.

What kind of soil does 90704 have?

The USDA soil survey maps Masthead at the center of ZIP 90704: gravelly silt loam, well drained, pH about 7.7 (slightly alkaline).

Did spring come early in Avalon, CA in 2026?

Spring leaf-out near 90704 came on Jan 16 in 2026, 5 days earlier than the 1991–2020 average (Jan 21), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Avalon, CA?

Intermediate onions: the longest day near 90704 is 14 h 22 min, so day-neutral types bulb best; long-day varieties may not bulb fully.