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

Planting zone for Kingman, AZ

Kingman, AZ is in USDA zone 8b across its 3 ZIP codes. The median last spring frost is April 2 and the first fall frost November 11.

Kingman on the zone map

Outlined: its 2 ZIP code areas · 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
ZIP codes3
Last frostApr 2
First frostNov 11
Growing season220 days

8b 3 ZIPs

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Kingman, 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 in Kingman, AZ

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 2median — 50% chance of a later frost
Safe for tender plantsApril 21only 10% chance of frost after
First fall frostNovember 11median — 10% chance by Oct 26
Growing season220 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 6 and returns around November 22.

From the NOAA station Kingman Mohave Co. Airport, AZ, elevation 3,419 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 Kingman

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 19 – Mar 5
SpinachSow outdoors · Feb 19 – Mar 12
Broccoli, cabbageStart indoors · Jan 22 – Feb 5
Broccoli, cabbageTransplant · Mar 12 – Mar 26
Onion setsPlant outdoors · Mar 5 – Mar 19
PotatoesPlant outdoors · Mar 12 – Mar 26
LettuceSow outdoors · Mar 5 – Mar 19
Carrots, beetsSow outdoors · Mar 12 – Mar 26
TomatoesStart indoors · Feb 5 – Feb 19
TomatoesTransplant · Apr 9 – Apr 23
Peppers, eggplantStart indoors · Jan 22 – Feb 5
Peppers, eggplantTransplant · Apr 16 – Apr 30
BeansSow outdoors · Apr 9 – Apr 23
Sweet cornSow outdoors · Apr 9 – Apr 23
Cucumbers, squashSow outdoors · Apr 9 – Apr 23
Fall lettuce, spinachSow outdoors · Sep 16 – Sep 30
GarlicPlant cloves · Oct 28 – Dec 2
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 2) and first fall frost (Nov 11) 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 86402 came on Jan 31 — 9 days earlier than the 1991–2020 average (Feb 9).

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 8b in Arizona

482 plants native to the lower 48 states, recorded in Arizona, and rated by the USDA to survive 15 °F or colder — the bottom of zone 8b. Each links to its USDA PLANTS profile.

Trees 25

Arizona cypress50 ft · blooms spring · low shade tolerance · to −23 °FArizona madrone30 ft · blooms late spring · high shade tolerance · to −4 °FArizona sycamore80 ft · blooms early spring · high shade tolerance · to −8 °FArizona walnut50 ft · blooms late spring · high shade tolerance · to −33 °Fblack locust60 ft · blooms spring · high shade tolerance · to −37 °Fblue spruce100 ft · blooms late spring · medium shade tolerance · to −38 °F

Shrubs 105

alderleaf mountain mahogany15 ft · blooms late spring · medium shade tolerance · to −41 °FAmerican plum24 ft · blooms mid spring · high shade tolerance · to −38 °FAmerican tarwort3 ft · blooms late spring · high shade tolerance · to −23 °Fantelope bitterbrush6 ft · blooms early spring · medium shade tolerance · to −36 °FApache plume6 ft · blooms late spring · high shade tolerance · to −23 °Fbig sagebrush4 ft · blooms mid summer · high shade tolerance · to −43 °F

Wildflowers & perennials 196

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine bistort1 ft · blooms mid spring · high shade tolerance · to −38 °Falpine mountainsorrel1 ft · blooms mid summer · medium shade tolerance · to −43 °FAmerican alpine speedwell1 ft · blooms summer · medium shade tolerance · to −28 °FAmerican bistort1.5 ft · blooms mid spring · high shade tolerance · to −38 °FAmerican century plant6 ft · blooms indeterminate · high shade tolerance · to 12 °F

Grasses 147

alkali cordgrass3 ft · blooms late summer · high shade tolerance · to −38 °Falkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °Falpine timothy1.4 ft · blooms late spring · medium shade tolerance · to −43 °Fanalogue sedge1.5 ft · blooms late spring · medium shade tolerance · to −38 °FArizona cottontop4 ft · blooms late summer · high shade tolerance · to −13 °FArizona fescue2 ft · blooms late spring · high shade tolerance · to −23 °F

Vines 1

western white clematis1 ft · blooms mid summer · medium shade tolerance · to −38 °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 Kingman, AZ.

Soil in Kingman, AZ

The soil mapped at the center of ZIP 86402 is Fig — extremely stony sandy loam, somewhat excessively drained.

TextureExtremely stony sandy loamdrains and warms fast; dries out and needs more feeding
pH7.8slightly alkaline; most vegetables like 6.0–7.0
DrainageSomewhat excessively drainednatural drainage class
Organic matter0.5%low — add compost
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Fig-Blind-Nodman complex, 30 to 70 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 86402; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Kingman, AZ

Summer high99 °Faverage high, July
Winter low30 °Faverage low, December
Hot days114days a year at 90 °F or more
Freezing nights66nights a year at 32 °F or less
Growing degree days5,325base 50 °F — the season’s usable heat
Longest day14 h 32 mindaylight on June 21
Shortest day9 h 46 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation8 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 57 °F, low 31 °F 57°31° JanFebruary: average high 61 °F, low 33 °F 61°33° FebMarch: average high 67 °F, low 38 °F 67°38° MarApril: average high 75 °F, low 43 °F 75°43° AprMay: average high 85 °F, low 53 °F 85°53° MayJune: average high 95 °F, low 62 °F 95°62° JunJuly: average high 99 °F, low 70 °F 99°70° JulAugust: average high 97 °F, low 69 °F 97°69° AugSeptember: average high 91 °F, low 60 °F 91°60° SepOctober: average high 79 °F, low 48 °F 79°48° OctNovember: average high 66 °F, low 37 °F 66°37° NovDecember: average high 56 °F, low 30 °F 56°30° Dec

Precipitation by month inches

0″1″2″January: 0.98 in precipitation 1.0 JanFebruary: 1.04 in precipitation 1.0 FebMarch: 0.59 in precipitation 0.6 MarApril: 0.46 in precipitation 0.5 AprMay: 0.08 in precipitation 0.1 MayJune: 0.11 in precipitation 0.1 JunJuly: 0.86 in precipitation 0.9 JulAugust: 0.88 in precipitation 0.9 AugSeptember: 0.96 in precipitation 1.0 SepOctober: 0.74 in precipitation 0.7 OctNovember: 0.62 in precipitation 0.6 NovDecember: 0.68 in precipitation 0.7 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Kingman Mohave Co. Airport, AZ (7 mi away); precipitation: Kingman Mohave Co. Airport, AZ (7 mi away). Daylight is calculated from latitude.

ZIP codes in Kingman

864018b
15 to 20 °F
864028b
15 to 20 °F
864098b
15 to 20 °F

Arizona planting zones →

Questions about Kingman

What planting zone is Kingman, AZ?

Kingman, AZ is in USDA hardiness zone 8b on the 2023 map (8b: 15 to 20 °F).

When is the last frost in Kingman, AZ?

The median last spring frost is April 2 and the median first fall frost is November 11 (NOAA 1991–2020 normals, Kingman Mohave Co. Airport station).

When can I plant a garden in Kingman, AZ?

Cool-season crops like peas and spinach go in around Feb 19 – Mar 12; tomatoes, peppers, beans and squash after about Apr 9, once frost risk has passed.

What kind of onions grow in Kingman, AZ?

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

How much rain and snow does Kingman, AZ get?

About 8 inches of precipitation a year (NOAA 1991–2020 normals).