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

Planting zone for 84082 — Wallsburg, UT

ZIP code 84082 (Wallsburg, Wasatch County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is May 28 and the first fall frost September 23.

Where ZIP 84082 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.

Zone6a−10 to −5 °F

Coldest night−23.3 to −20.6 °C

Last frostMay 28

First frostSep 23

2012 zone5b

Was 5b 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 6a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Wallsburg, 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 Wallsburg, UT

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMay 28median — 50% chance of a later frost

Safe for tender plantsJune 15only 10% chance of frost after

First fall frostSeptember 23median — 10% chance by Sep 7

Growing season119 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 11 and returns around October 4.

From the NOAA station Deer Creek Dam, UT — 10 miles away, elevation 5,269 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 84082

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 16 – Apr 30

SpinachSow outdoors · Apr 16 – May 7

Broccoli, cabbageStart indoors · Mar 19 – Apr 2

Broccoli, cabbageTransplant · May 7 – May 21

Onion setsPlant outdoors · Apr 30 – May 14

PotatoesPlant outdoors · May 7 – May 21

LettuceSow outdoors · Apr 30 – May 14

Carrots, beetsSow outdoors · May 7 – May 21

TomatoesStart indoors · Apr 2 – Apr 16

TomatoesTransplant · Jun 4 – Jun 18

Peppers, eggplantStart indoors · Mar 19 – Apr 2

Peppers, eggplantTransplant · Jun 11 – Jun 25

BeansSow outdoors · Jun 4 – Jun 18

Sweet cornSow outdoors · Jun 4 – Jun 18

Cucumbers, squashSow outdoors · Jun 4 – Jun 18

Fall lettuce, spinachSow outdoors · Jul 29 – Aug 12

GarlicPlant cloves · Sep 9 – Oct 14

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 28) and first fall frost (Sep 23) 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 84082 came on Apr 11 — 8 days earlier than the 1991–2020 average (Apr 19).

average
Apr 192026
Apr 11

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 6a in Utah

546 plants native to the lower 48 states, recorded in Utah, and rated by the USDA to survive −10 °F or colder — the bottom of zone 6a. 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 Wallsburg, UT.

Soil in Wallsburg, UT

The soil mapped at the center of ZIP 84082 is Bradshaw — very cobbly very fine sandy loam, well drained.

TextureVery cobbly very fine sandy 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 matter3.5%moderate

Hydrologic groupAwater soaks in fast

Farmland classNot prime farmlandUSDA classification

Map unit: Bradshaw very cobbly very fine sandy loam, 40 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 84082; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Wallsburg, UT

Summer high86 °Faverage high, July

Winter low13 °Faverage low, January

Hot days14days a year at 90 °F or more

Freezing nights198nights a year at 32 °F or less

Growing degree days1,791base 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)

Precipitation29.3 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: Deer Creek Dam, UT (10 mi away); precipitation: Daniels-Strawberry, UT (6 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.

840326a

Heber City, UT · 9 mi

846046b

Provo, UT · 11 mi

846636b

Springville, UT · 12 mi

Utah planting zones →

Questions about 84082

What planting zone is ZIP code 84082?

ZIP code 84082 (Wallsburg, UT) is in USDA hardiness zone 6a on the 2023 map: the coldest night of an average winter reaches −10 to −5 °F (−23.3 to −20.6 °C).

When is the last frost in Wallsburg, UT?

The median last spring frost (32 °F) near 84082 is May 28; after June 15 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Deer Creek Dam station.

When is the first frost in Wallsburg, UT?

The median first fall frost near 84082 is September 23, giving a median frost-free growing season of 119 days.

When should I plant tomatoes in 84082?

Start tomato seeds indoors around Apr 2 – Apr 16 and set transplants outside around Jun 4 – Jun 18, one to three weeks after the median last frost.

How much rain and snow does 84082 get?

About 29.3 inches of precipitation a year (NOAA 1991–2020 normals, Daniels-Strawberry station).

How hot do summers get in Wallsburg, UT?

The average high peaks at 86 °F in July, with about 14 days a year at 90 °F or more.

What kind of soil does 84082 have?

The USDA soil survey maps Bradshaw at the center of ZIP 84082: very cobbly very fine sandy loam, well drained, pH about 7.6 (slightly alkaline).

Did spring come early in Wallsburg, UT in 2026?

Spring leaf-out near 84082 came on Apr 11 in 2026, 8 days earlier than the 1991–2020 average (Apr 19), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Wallsburg, UT?

Long-day onions: the longest day near 84082 is 15 h 03 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 84082 change?

Yes. The 2012 USDA map put 84082 in zone 5b; the 2023 map puts it in zone 6a. The newer map uses 1991–2020 data and more weather stations.