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

Planting zone for 84765 — Santa Clara, UT

ZIP code 84765 (Santa Clara, Washington County) is in USDA zone 8a: the coldest winter night averages 10 to 15 °F. The median last spring frost is March 18 and the first fall frost November 9.

Where ZIP 84765 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.

Zone8a10 to 15 °F
Coldest night−12.2 to −9.4 °C
Last frostMar 18
First frostNov 9
2012 zone8a

Same zone as on the 2012 map. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 8a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Santa Clara, 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 Santa Clara, UT

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 18median — 50% chance of a later frost
Safe for tender plantsApril 16only 10% chance of frost after
First fall frostNovember 9median — 10% chance by Oct 22
Growing season234 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 24 and returns around November 23.

From the NOAA station Lytle Rch, UT — 14 miles away, elevation 2,789 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 84765

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 4 – Feb 18
SpinachSow outdoors · Feb 4 – Feb 25
Broccoli, cabbageStart indoors · Jan 7 – Jan 21
Broccoli, cabbageTransplant · Feb 25 – Mar 11
Onion setsPlant outdoors · Feb 18 – Mar 4
PotatoesPlant outdoors · Feb 25 – Mar 11
LettuceSow outdoors · Feb 18 – Mar 4
Carrots, beetsSow outdoors · Feb 25 – Mar 11
TomatoesStart indoors · Jan 21 – Feb 4
TomatoesTransplant · Mar 25 – Apr 8
Peppers, eggplantStart indoors · Jan 7 – Jan 21
Peppers, eggplantTransplant · Apr 1 – Apr 15
BeansSow outdoors · Mar 25 – Apr 8
Sweet cornSow outdoors · Mar 25 – Apr 8
Cucumbers, squashSow outdoors · Mar 25 – Apr 8
Fall lettuce, spinachSow outdoors · Sep 14 – Sep 28
GarlicPlant cloves · Oct 26 – Nov 30
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 18) and first fall frost (Nov 9) 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 84765 came on Feb 3 — 16 days earlier than the 1991–2020 average (Feb 19).

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 8a in Utah

575 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 8a. Each links to its USDA PLANTS profile.

Trees 31

American beech80 ft · blooms mid spring · low shade tolerance · to −44 °FArizona cypress50 ft · blooms spring · low shade tolerance · to −23 °FArizona walnut50 ft · blooms late spring · high shade tolerance · to −33 °Fbalsam poplar80 ft · blooms late spring · high shade tolerance · to −79 °Fblack locust60 ft · blooms spring · high shade tolerance · to −37 °Fblack walnut100 ft · blooms late spring · high shade tolerance · to −28 °F

Shrubs 116

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °Falderleaf mountain mahogany15 ft · blooms late spring · medium shade tolerance · to −41 °Falpine laurel1 ft · blooms late spring · low shade tolerance · to −28 °FAmerican plum24 ft · blooms mid spring · high shade tolerance · to −38 °Fantelope bitterbrush6 ft · blooms early spring · medium shade tolerance · to −36 °FApache plume6 ft · blooms late spring · high shade tolerance · to −23 °F

Wildflowers & perennials 260

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 licorice4 ft · blooms late spring · medium shade tolerance · to −38 °F

Grasses 155

alkali cordgrass3 ft · blooms late summer · high shade tolerance · to −38 °Falkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °FAlpine Meadow-Foxtail0.5 ft · blooms mid spring · medium shade tolerance · to −33 °Falpine timothy1.4 ft · blooms late spring · medium shade tolerance · to −43 °Fanalogue sedge1.5 ft · blooms late spring · medium shade tolerance · to −38 °Farctic bluegrass2 ft · high shade tolerance · to −62 °F

Vines 3

trumpet creeper2 ft · blooms summer · high shade tolerance · to −13 °FVirginia creeper1 ft · blooms late spring · medium shade tolerance · to −28 °Fwestern 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 Santa Clara, UT.

Soil in Santa Clara, UT

The soil mapped at the center of ZIP 84765 is Quazo — very gravelly sandy loam, well drained.

TextureVery gravelly sandy loamdrains and warms fast; dries out and needs more feeding
pH7.0neutral; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter0.75%low — add compost
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Quazo-Motoqua very gravelly sandy loams, 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 84765; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Santa Clara, UT

Summer high101 °Faverage high, July
Winter low31 °Faverage low, December
Hot days127days a year at 90 °F or more
Freezing nights87nights a year at 32 °F or less
Growing degree days5,328base 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
Precipitation28.2 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 56 °F, low 33 °F 56°33° JanFebruary: average high 60 °F, low 36 °F 60°36° FebMarch: average high 68 °F, low 41 °F 68°41° MarApril: average high 76 °F, low 46 °F 76°46° AprMay: average high 85 °F, low 53 °F 85°53° MayJune: average high 96 °F, low 61 °F 96°61° JunJuly: average high 101 °F, low 68 °F 101°68° JulAugust: average high 99 °F, low 66 °F 99°66° AugSeptember: average high 92 °F, low 59 °F 92°59° SepOctober: average high 78 °F, low 47 °F 78°47° OctNovember: average high 65 °F, low 37 °F 65°37° NovDecember: average high 55 °F, low 31 °F 55°31° Dec

Precipitation by month inches

0″1″2″3″4″5″January: 3.96 in precipitation 4.0 JanFebruary: 4.44 in precipitation 4.4 FebMarch: 3.29 in precipitation 3.3 MarApril: 1.66 in precipitation 1.7 AprMay: 1.14 in precipitation 1.1 MayJune: 0.48 in precipitation 0.5 JunJuly: 1.67 in precipitation 1.7 JulAugust: 1.67 in precipitation 1.7 AugSeptember: 1.75 in precipitation 1.8 SepOctober: 2.19 in precipitation 2.2 OctNovember: 1.95 in precipitation 1.9 NovDecember: 4.03 in precipitation 4.0 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Lytle Rch, UT (14 mi away); precipitation: Gutz Peak, UT (12 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.

847338a
Gunlock, UT · 12 mi
847838a
Dammeron Valley, UT · 19 mi
847257a
Enterprise, UT · 19 mi
847827b
Veyo, UT · 19 mi
847388b
Ivins, UT · 19 mi
847708b
Saint George, UT · 25 mi
847226b
Central, UT · 27 mi
890088b
Caliente, NV · 27 mi

Utah planting zones →

Questions about 84765

What planting zone is ZIP code 84765?

ZIP code 84765 (Santa Clara, UT) is in USDA hardiness zone 8a on the 2023 map: the coldest night of an average winter reaches 10 to 15 °F (−12.2 to −9.4 °C).

When is the last frost in Santa Clara, UT?

The median last spring frost (32 °F) near 84765 is March 18; after April 16 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Lytle Rch station.

When is the first frost in Santa Clara, UT?

The median first fall frost near 84765 is November 9, giving a median frost-free growing season of 234 days.

When should I plant tomatoes in 84765?

Start tomato seeds indoors around Jan 21 – Feb 4 and set transplants outside around Mar 25 – Apr 8, one to three weeks after the median last frost.

How much rain and snow does 84765 get?

About 28.2 inches of precipitation a year (NOAA 1991–2020 normals, Gutz Peak station).

How hot do summers get in Santa Clara, UT?

The average high peaks at 101 °F in July, with about 127 days a year at 90 °F or more.

What kind of soil does 84765 have?

The USDA soil survey maps Quazo at the center of ZIP 84765: very gravelly sandy loam, well drained, pH about 7.0 (neutral).

Did spring come early in Santa Clara, UT in 2026?

Spring leaf-out near 84765 came on Feb 3 in 2026, 16 days earlier than the 1991–2020 average (Feb 19), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Santa Clara, UT?

Intermediate onions: the longest day near 84765 is 14 h 44 min, so day-neutral types bulb best; long-day varieties may not bulb fully.