Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 86413 — Golden Valley, AZ

ZIP code 86413 (Golden Valley, Mohave County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F.

Where ZIP 86413 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.

Zone9a20 to 25 °F

Coldest night−6.7 to −3.9 °C

Last frostrare

First frostrare

2012 zone9a

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 9a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Golden Valley, AZ…

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 Bullhead City, AZ — 18 miles away, elevation 532 ft) the median growing season is 356 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 86413 came on Jan 27 — 4 days earlier than the 1991–2020 average (Jan 31).

average
Jan 312026
Jan 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).

Native plants for zone 9a in Arizona

492 plants native to the lower 48 states, recorded in Arizona, and rated by the USDA to survive 20 °F or colder — the bottom of zone 9a. Each links to its USDA PLANTS profile.

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 Golden Valley, AZ.

Soil in Golden Valley, AZ

The soil mapped at the center of ZIP 86413 is Dutchflat — sandy loam, well drained.

TextureSandy loamdrains and warms fast; dries out and needs more feeding

pH7.6slightly alkaline; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter0.75%low — add compost

Hydrologic groupBwater soaks in moderately

Farmland classNot prime farmlandUSDA classification

Map unit: Dutchflat sandy loam, 0 to 2 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 86413; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Golden Valley, AZ

Summer high111 °Faverage high, July

Winter low44 °Faverage low, December

Hot days186days a year at 90 °F or more

Freezing nights2nights a year at 32 °F or less

Growing degree days8,922base 50 °F — the season’s usable heat

Longest day14 h 32 mindaylight on June 21

Shortest day9 h 47 mindaylight on December 21

Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully

Precipitation5.4 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Bullhead City, AZ (18 mi away); precipitation: Bullhead City, AZ (18 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

864028b

Kingman, AZ · 13 mi

864299b

Bullhead City, AZ · 15 mi

8643010a

Bullhead City, AZ · 16 mi

Bullhead City, AZ · 18 mi

8644210a

Bullhead City, AZ · 18 mi

864269b

Fort Mohave, AZ · 20 mi

Arizona planting zones →

Questions about 86413

What planting zone is ZIP code 86413?

ZIP code 86413 (Golden Valley, AZ) is in USDA hardiness zone 9a on the 2023 map: the coldest night of an average winter reaches 20 to 25 °F (−6.7 to −3.9 °C).

How much rain and snow does 86413 get?

About 5.4 inches of precipitation a year (NOAA 1991–2020 normals, Bullhead City station).

How hot do summers get in Golden Valley, AZ?

The average high peaks at 111 °F in July, with about 186 days a year at 90 °F or more.

What kind of soil does 86413 have?

The USDA soil survey maps Dutchflat at the center of ZIP 86413: sandy loam, well drained, pH about 7.6 (slightly alkaline).

Did spring come early in Golden Valley, AZ in 2026?

Spring leaf-out near 86413 came on Jan 27 in 2026, 4 days earlier than the 1991–2020 average (Jan 31), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Golden Valley, AZ?

Intermediate onions: the longest day near 86413 is 14 h 32 min, so day-neutral types bulb best; long-day varieties may not bulb fully.