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

Planting zone for 84534 — Montezuma Creek, UT

ZIP code 84534 (Montezuma Creek, San Juan County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is May 2 and the first fall frost October 10.

Where ZIP 84534 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.

Zone7a0 to 5 °F
Coldest night−17.8 to −15 °C
Last frostMay 2
First frostOct 10
2012 zone7a

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 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Montezuma Creek, 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 Montezuma Creek, UT

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 2median — 50% chance of a later frost
Safe for tender plantsMay 21only 10% chance of frost after
First fall frostOctober 10median — 10% chance by Sep 27
Growing season159 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 21 and returns around October 20.

From the NOAA station Hovenweep Nm, UT — 16 miles away, elevation 5,240 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 84534

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 21 – Apr 4
SpinachSow outdoors · Mar 21 – Apr 11
Broccoli, cabbageStart indoors · Feb 21 – Mar 7
Broccoli, cabbageTransplant · Apr 11 – Apr 25
Onion setsPlant outdoors · Apr 4 – Apr 18
PotatoesPlant outdoors · Apr 11 – Apr 25
LettuceSow outdoors · Apr 4 – Apr 18
Carrots, beetsSow outdoors · Apr 11 – Apr 25
TomatoesStart indoors · Mar 7 – Mar 21
TomatoesTransplant · May 9 – May 23
Peppers, eggplantStart indoors · Feb 21 – Mar 7
Peppers, eggplantTransplant · May 16 – May 30
BeansSow outdoors · May 9 – May 23
Sweet cornSow outdoors · May 9 – May 23
Cucumbers, squashSow outdoors · May 9 – May 23
Fall lettuce, spinachSow outdoors · Aug 15 – Aug 29
GarlicPlant cloves · Sep 26 – Oct 31
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 2) and first fall frost (Oct 10) 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 84534 came on Mar 2 — 9 days earlier than the 1991–2020 average (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 7a in Utah

561 plants native to the lower 48 states, recorded in Utah, and rated by the USDA to survive 0 °F or colder — the bottom of zone 7a. Each links to its USDA PLANTS profile.

Trees 30

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 112

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 254

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 154

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 Montezuma Creek, UT.

Soil in Montezuma Creek, UT

The soil mapped at the center of ZIP 84534 is Typic Torrifluvents — loam, well drained.

TextureLoama good balance for most vegetables
pH8.5alkaline; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter0.75%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Badland-Typic Torrifluvents association, steep.

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 84534; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Montezuma Creek, UT

Summer high96 °Faverage high, July
Winter low18 °Faverage low, January
Hot days78days a year at 90 °F or more
Freezing nights159nights a year at 32 °F or less
Growing degree days3,535base 50 °F — the season’s usable heat
Longest day14 h 43 mindaylight on June 21
Shortest day9 h 36 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation10.2 inper year, rain and melted snow
Snowfall12 inper year; 19 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°110°32 °FJanuary: average high 43 °F, low 18 °F 43°18° JanFebruary: average high 50 °F, low 24 °F 50°24° FebMarch: average high 60 °F, low 29 °F 60°29° MarApril: average high 68 °F, low 35 °F 68°35° AprMay: average high 79 °F, low 44 °F 79°44° MayJune: average high 90 °F, low 53 °F 90°53° JunJuly: average high 96 °F, low 61 °F 96°61° JulAugust: average high 93 °F, low 59 °F 93°59° AugSeptember: average high 84 °F, low 50 °F 84°50° SepOctober: average high 71 °F, low 37 °F 71°37° OctNovember: average high 56 °F, low 26 °F 56°26° NovDecember: average high 44 °F, low 18 °F 44°18° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″January: 0.95 in precipitation, 3.1 in snowfall 0.9❄3 JanFebruary: 0.96 in precipitation, 3.5 in snowfall 1.0❄4 FebMarch: 0.79 in precipitation, 0.8 in snowfall 0.8❄1 MarApril: 0.64 in precipitation, 0.3 in snowfall 0.6 AprMay: 0.79 in precipitation, 0.1 in snowfall 0.8 MayJune: 0.32 in precipitation 0.3 JunJuly: 0.96 in precipitation 1.0 JulAugust: 1.00 in precipitation 1.0 AugSeptember: 1.13 in precipitation 1.1 SepOctober: 1.05 in precipitation, 0.4 in snowfall 1.1 OctNovember: 0.74 in precipitation, 0.7 in snowfall 0.7❄1 NovDecember: 0.87 in precipitation, 3.3 in snowfall 0.9❄3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Hovenweep Nm, UT (16 mi away); precipitation: Hovenweep Nm, UT (16 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

845127a
Bluff, UT · 17 mi
865147a
Teec Nos Pos, AZ · 22 mi
845117a
Blanding, UT · 23 mi
813316b
Pleasant View, CO · 25 mi
874207a
Shiprock, NM · 30 mi
813246b
Dove Creek, CO · 33 mi
845317b
Mexican Hat, UT · 33 mi
865457a
Rock Point, AZ · 38 mi

Utah planting zones →

Questions about 84534

What planting zone is ZIP code 84534?

ZIP code 84534 (Montezuma Creek, UT) is in USDA hardiness zone 7a on the 2023 map: the coldest night of an average winter reaches 0 to 5 °F (−17.8 to −15 °C).

When is the last frost in Montezuma Creek, UT?

The median last spring frost (32 °F) near 84534 is May 2; after May 21 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Hovenweep Nm station.

When is the first frost in Montezuma Creek, UT?

The median first fall frost near 84534 is October 10, giving a median frost-free growing season of 159 days.

When should I plant tomatoes in 84534?

Start tomato seeds indoors around Mar 7 – Mar 21 and set transplants outside around May 9 – May 23, one to three weeks after the median last frost.

How much rain and snow does 84534 get?

About 10.2 inches of precipitation a year and 12 inches of snowfall (NOAA 1991–2020 normals, Hovenweep Nm station).

How hot do summers get in Montezuma Creek, UT?

The average high peaks at 96 °F in July, with about 78 days a year at 90 °F or more.

What kind of soil does 84534 have?

The USDA soil survey maps Typic Torrifluvents at the center of ZIP 84534: loam, well drained, pH about 8.5 (alkaline).

Did spring come early in Montezuma Creek, UT in 2026?

Spring leaf-out near 84534 came on Mar 2 in 2026, 9 days earlier than the 1991–2020 average (Mar 11), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Montezuma Creek, UT?

Intermediate onions: the longest day near 84534 is 14 h 43 min, so day-neutral types bulb best; long-day varieties may not bulb fully.