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

Planting zone for 84022 — Dugway, UT

ZIP code 84022 (Dugway, Tooele County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is May 15 and the first fall frost October 5.

Where ZIP 84022 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.

Zone6b−5 to 0 °F

Coldest night−20.6 to −17.8 °C

Last frostMay 15

First frostOct 5

2012 zone6a

Was 6a 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 6b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Dugway, UT…

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 Dugway, UT

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostMay 15median — 50% chance of a later frost

Safe for tender plantsJune 4only 10% chance of frost after

First fall frostOctober 5median — 10% chance by Sep 22

Growing season142 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 30 and returns around October 16.

From the NOAA station Johnson Pass, UT — 2 miles away, elevation 5,581 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 84022

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 3 – Apr 17

SpinachSow outdoors · Apr 3 – Apr 24

Broccoli, cabbageStart indoors · Mar 6 – Mar 20

Broccoli, cabbageTransplant · Apr 24 – May 8

Onion setsPlant outdoors · Apr 17 – May 1

PotatoesPlant outdoors · Apr 24 – May 8

LettuceSow outdoors · Apr 17 – May 1

Carrots, beetsSow outdoors · Apr 24 – May 8

TomatoesStart indoors · Mar 20 – Apr 3

TomatoesTransplant · May 22 – Jun 5

Peppers, eggplantStart indoors · Mar 6 – Mar 20

Peppers, eggplantTransplant · May 29 – Jun 12

BeansSow outdoors · May 22 – Jun 5

Sweet cornSow outdoors · May 22 – Jun 5

Cucumbers, squashSow outdoors · May 22 – Jun 5

Fall lettuce, spinachSow outdoors · Aug 10 – Aug 24

GarlicPlant cloves · Sep 21 – Oct 26

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 15) and first fall frost (Oct 5) 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 84022 came on Mar 20 — 9 days earlier than the 1991–2020 average (Mar 29).

average
Mar 292026
Mar 20

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 6b in Utah

549 plants native to the lower 48 states, recorded in Utah, and rated by the USDA to survive −5 °F or colder — the bottom of zone 6b. 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 Dugway, UT.

Soil in Dugway, UT

The soil mapped at the center of ZIP 84022 is Berent — loamy fine sand, somewhat excessively drained.

TextureLoamy fine sanddrains and warms fast; dries out and needs more feeding

pH7.9alkaline; most vegetables like 6.0–7.0

DrainageSomewhat excessively drainednatural drainage class

Organic matter1.5%low — add compost

Hydrologic groupAwater soaks in fast

Farmland classNot prime farmlandUSDA classification

Map unit: Berent-Hiko Peak complex, 2 to 15 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 84022; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Dugway, UT

Summer high91 °Faverage high, July

Winter low19 °Faverage low, January

Hot days52days a year at 90 °F or more

Freezing nights154nights a year at 32 °F or less

Growing degree days2,803base 50 °F — the season’s usable heat

Longest day15 h 03 mindaylight on June 21

Shortest day9 h 17 mindaylight on December 21

Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)

Precipitation15.7 inper year, rain and melted snow

Snowfall68 inper year; 77 days with snow on the ground

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Johnson Pass, UT (2 mi away); precipitation: Johnson Pass, UT (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

840696a

Rush Valley, UT · 8 mi

840716b

Stockton, UT · 20 mi

840297a

Grantsville, UT · 23 mi

Cedar Valley, UT · 29 mi

840967a

Herriman, UT · 30 mi

840067a

Bingham Canyon, UT · 32 mi

Utah planting zones →

Questions about 84022

What planting zone is ZIP code 84022?

ZIP code 84022 (Dugway, UT) is in USDA hardiness zone 6b on the 2023 map: the coldest night of an average winter reaches −5 to 0 °F (−20.6 to −17.8 °C).

When is the last frost in Dugway, UT?

The median last spring frost (32 °F) near 84022 is May 15; after June 4 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Johnson Pass station.

When is the first frost in Dugway, UT?

The median first fall frost near 84022 is October 5, giving a median frost-free growing season of 142 days.

When should I plant tomatoes in 84022?

Start tomato seeds indoors around Mar 20 – Apr 3 and set transplants outside around May 22 – Jun 5, one to three weeks after the median last frost.

How much rain and snow does 84022 get?

About 15.7 inches of precipitation a year and 68 inches of snowfall (NOAA 1991–2020 normals, Johnson Pass station).

How hot do summers get in Dugway, UT?

The average high peaks at 91 °F in July, with about 52 days a year at 90 °F or more.

What kind of soil does 84022 have?

The USDA soil survey maps Berent at the center of ZIP 84022: loamy fine sand, somewhat excessively drained, pH about 7.9 (alkaline).

Did spring come early in Dugway, UT in 2026?

Spring leaf-out near 84022 came on Mar 20 in 2026, 9 days earlier than the 1991–2020 average (Mar 29), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Dugway, UT?

Long-day onions: the longest day near 84022 is 15 h 03 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 84022 change?

Yes. The 2012 USDA map put 84022 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.