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

Planting zone for 84034 — Ibapah, UT

ZIP code 84034 (Ibapah, Tooele County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is June 14 and the first fall frost September 8.

Where ZIP 84034 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 frostJun 14

First frostSep 8

2012 zone5b

Was 5b on the 2012 map — a full 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 Ibapah, 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 Ibapah, UT

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostJune 14median — 50% chance of a later frost

Safe for tender plantsJuly 1only 10% chance of frost after

First fall frostSeptember 8median — 10% chance by Aug 23

Growing season86 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 25 and returns around September 19.

From the NOAA station Ibapah, UT — 7 miles away, elevation 5,279 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 84034

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · May 3 – May 17

SpinachSow outdoors · May 3 – May 24

Broccoli, cabbageStart indoors · Apr 5 – Apr 19

Broccoli, cabbageTransplant · May 24 – Jun 7

Onion setsPlant outdoors · May 17 – May 31

PotatoesPlant outdoors · May 24 – Jun 7

LettuceSow outdoors · May 17 – May 31

Carrots, beetsSow outdoors · May 24 – Jun 7

TomatoesStart indoors · Apr 19 – May 3

TomatoesTransplant · Jun 21 – Jul 5

Peppers, eggplantStart indoors · Apr 5 – Apr 19

Peppers, eggplantTransplant · Jun 28 – Jul 12

BeansSow outdoors · Jun 21 – Jul 5

Sweet cornSow outdoors · Jun 21 – Jul 5

Cucumbers, squashSow outdoors · Jun 21 – Jul 5

Fall lettuce, spinachSow outdoors · Jul 14 – Jul 28

GarlicPlant cloves · Aug 25 – Sep 29

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Jun 14) and first fall frost (Sep 8) 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 84034 came on Mar 25 — 22 days earlier than the 1991–2020 average (Apr 16).

average
Apr 162026
Mar 25

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 Ibapah, UT.

Soil in Ibapah, UT

The soil mapped at the center of ZIP 84034 is Lodar — very cobbly loam, well drained.

TextureVery cobbly loama good balance for most vegetables

pH7.9alkaline; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter3%moderate

Hydrologic groupDwater soaks in very slowly

Farmland classNot prime farmlandUSDA classification

Map unit: Lodar-Lundy-Rock outcrop association, 30 to 60 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 84034; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Ibapah, UT

Summer high94 °Faverage high, July

Winter low12 °Faverage low, January

Hot days71days a year at 90 °F or more

Freezing nights216nights a year at 32 °F or less

Growing degree days2,254base 50 °F — the season’s usable heat

Longest day15 h 01 mindaylight on June 21

Shortest day9 h 20 mindaylight on December 21

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

Precipitation10.5 inper year, rain and melted snow

Snowfall30 inper year

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Ibapah, UT (7 mi away); precipitation: Ibapah, UT (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

West Wendover, NV · 61 mi

893186a

Mc Gill, NV · 63 mi

840297a

Grantsville, UT · 63 mi

840226b

Dugway, UT · 70 mi

Utah planting zones →

Questions about 84034

What planting zone is ZIP code 84034?

ZIP code 84034 (Ibapah, 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 Ibapah, UT?

The median last spring frost (32 °F) near 84034 is June 14; after July 1 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Ibapah station.

When is the first frost in Ibapah, UT?

The median first fall frost near 84034 is September 8, giving a median frost-free growing season of 86 days.

When should I plant tomatoes in 84034?

Start tomato seeds indoors around Apr 19 – May 3 and set transplants outside around Jun 21 – Jul 5, one to three weeks after the median last frost.

How much rain and snow does 84034 get?

About 10.5 inches of precipitation a year and 30 inches of snowfall (NOAA 1991–2020 normals, Ibapah station).

How hot do summers get in Ibapah, UT?

The average high peaks at 94 °F in July, with about 71 days a year at 90 °F or more.

What kind of soil does 84034 have?

The USDA soil survey maps Lodar at the center of ZIP 84034: very cobbly loam, well drained, pH about 7.9 (alkaline).

Did spring come early in Ibapah, UT in 2026?

Spring leaf-out near 84034 came on Mar 25 in 2026, 22 days earlier than the 1991–2020 average (Apr 16), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Ibapah, UT?

Long-day onions: the longest day near 84034 is 15 h 01 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 84034 change?

Yes. The 2012 USDA map put 84034 in zone 5b; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.