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

Planting zone for 84779 — Virgin, UT

ZIP code 84779 (Virgin, Washington County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 13 and the first fall frost November 2.

Where ZIP 84779 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 frostApr 13

First frostNov 2

2012 zone8a

Was 8a on the 2012 map — 1.5 zones colder 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 Virgin, 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 Virgin, UT

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostApril 13median — 50% chance of a later frost

Safe for tender plantsMay 2only 10% chance of frost after

First fall frostNovember 2median — 10% chance by Oct 20

Growing season202 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 23 and returns around November 12.

From the NOAA station Zion Np, UT — 12 miles away, elevation 4,039 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 84779

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Mar 2 – Mar 16

SpinachSow outdoors · Mar 2 – Mar 23

Broccoli, cabbageStart indoors · Feb 2 – Feb 16

Broccoli, cabbageTransplant · Mar 23 – Apr 6

Onion setsPlant outdoors · Mar 16 – Mar 30

PotatoesPlant outdoors · Mar 23 – Apr 6

LettuceSow outdoors · Mar 16 – Mar 30

Carrots, beetsSow outdoors · Mar 23 – Apr 6

TomatoesStart indoors · Feb 16 – Mar 2

TomatoesTransplant · Apr 20 – May 4

Peppers, eggplantStart indoors · Feb 2 – Feb 16

Peppers, eggplantTransplant · Apr 27 – May 11

BeansSow outdoors · Apr 20 – May 4

Sweet cornSow outdoors · Apr 20 – May 4

Cucumbers, squashSow outdoors · Apr 20 – May 4

Fall lettuce, spinachSow outdoors · Sep 7 – Sep 21

GarlicPlant cloves · Oct 19 – Nov 23

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 13) and first fall frost (Nov 2) 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 84779 came on Mar 11 — 12 days earlier than the 1991–2020 average (Mar 23).

average
Mar 232026
Mar 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 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 Virgin, UT.

Soil in Virgin, UT

The center of ZIP 84779 is mapped as Rock land: built-over ground without natural soil data. Garden soil here is usually imported or disturbed — test before you plant.

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 84779; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Virgin, UT

Summer high100 °Faverage high, July

Winter low29 °Faverage low, December

Hot days119days a year at 90 °F or more

Freezing nights71nights a year at 32 °F or less

Growing degree days5,324base 50 °F — the season’s usable heat

Longest day14 h 44 mindaylight on June 21

Shortest day9 h 35 mindaylight on December 21

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

Precipitation16.3 inper year, rain and melted snow

Snowfall4 inper year; 2 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: Zion Np, UT (12 mi away); precipitation: Zion Np, UT (12 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

847748b

Toquerville, UT · 11 mi

847458a

La Verkin, UT · 12 mi

847676b

Springdale, UT · 12 mi

847577a

New Harmony, UT · 12 mi

847426b

Kanarraville, UT · 13 mi

847638a

Rockville, UT · 13 mi

847468b

Leeds, UT · 14 mi

847586b

Orderville, UT · 19 mi

Utah planting zones →

Questions about 84779

What planting zone is ZIP code 84779?

ZIP code 84779 (Virgin, 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 Virgin, UT?

The median last spring frost (32 °F) near 84779 is April 13; after May 2 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Zion Np station.

When is the first frost in Virgin, UT?

The median first fall frost near 84779 is November 2, giving a median frost-free growing season of 202 days.

When should I plant tomatoes in 84779?

Start tomato seeds indoors around Feb 16 – Mar 2 and set transplants outside around Apr 20 – May 4, one to three weeks after the median last frost.

How much rain and snow does 84779 get?

About 16.3 inches of precipitation a year and 4 inches of snowfall (NOAA 1991–2020 normals, Zion Np station).

How hot do summers get in Virgin, UT?

The average high peaks at 100 °F in July, with about 119 days a year at 90 °F or more.

Did spring come early in Virgin, UT in 2026?

Spring leaf-out near 84779 came on Mar 11 in 2026, 12 days earlier than the 1991–2020 average (Mar 23), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Virgin, UT?

Intermediate onions: the longest day near 84779 is 14 h 44 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 84779 change?

Yes. The 2012 USDA map put 84779 in zone 8a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.