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

Planting zone for 84068 — Park City, UT

ZIP code 84068 (Park City, Summit County) is in USDA zone 5b: the coldest winter night averages −15 to −10 °F. The median last spring frost is May 29 and the first fall frost September 25.

Where ZIP 84068 is

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.

Zone5b−15 to −10 °F
Coldest night−26.1 to −23.3 °C
Last frostMay 29
First frostSep 25
2012 zone5b

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 5b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Park City, 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 Park City, UT

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 29median — 50% chance of a later frost
Safe for tender plantsJune 14only 10% chance of frost after
First fall frostSeptember 25median — 10% chance by Sep 12
Growing season117 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 12 and returns around October 6.

From the NOAA station Park City, UT — within 1 mile, elevation 6,900 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 84068

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Apr 17 – May 1
SpinachSow outdoors · Apr 17 – May 8
Broccoli, cabbageStart indoors · Mar 20 – Apr 3
Broccoli, cabbageTransplant · May 8 – May 22
Onion setsPlant outdoors · May 1 – May 15
PotatoesPlant outdoors · May 8 – May 22
LettuceSow outdoors · May 1 – May 15
Carrots, beetsSow outdoors · May 8 – May 22
TomatoesStart indoors · Apr 3 – Apr 17
TomatoesTransplant · Jun 5 – Jun 19
Peppers, eggplantStart indoors · Mar 20 – Apr 3
Peppers, eggplantTransplant · Jun 12 – Jun 26
BeansSow outdoors · Jun 5 – Jun 19
Sweet cornSow outdoors · Jun 5 – Jun 19
Cucumbers, squashSow outdoors · Jun 5 – Jun 19
Fall lettuce, spinachSow outdoors · Jul 31 – Aug 14
GarlicPlant cloves · Sep 11 – Oct 16
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 29) and first fall frost (Sep 25) 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 84068 came on Mar 25 — 29 days earlier than the 1991–2020 average (Apr 23).

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 5b in Utah

517 plants native to the lower 48 states, recorded in Utah, and rated by the USDA to survive −15 °F or colder — the bottom of zone 5b. Each links to its USDA PLANTS profile.

Trees 28

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 94

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 238

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 148

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 2

Virginia 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 Park City, UT.

Soil in Park City, UT

The soil mapped at the center of ZIP 84068 is Wanship — loam, somewhat poorly drained.

TextureLoama good balance for most vegetables
pH7.5slightly alkaline; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter7.5%high
Hydrologic groupBwater soaks in moderately
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Wanship loam, 0 to 3 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 84068; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Park City, UT

Summer high80 °Faverage high, July
Winter low16 °Faverage low, January
Hot days5days a year at 90 °F or more
Freezing nights202nights a year at 32 °F or less
Growing degree days1,616base 50 °F — the season’s usable heat
Longest day15 h 05 mindaylight on June 21
Shortest day9 h 15 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation22.4 inper year, rain and melted snow

Average high and low, by month

10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 33 °F, low 16 °F 33°16° JanFebruary: average high 35 °F, low 17 °F 35°17° FebMarch: average high 43 °F, low 25 °F 43°25° MarApril: average high 51 °F, low 31 °F 51°31° AprMay: average high 61 °F, low 38 °F 61°38° MayJune: average high 72 °F, low 46 °F 72°46° JunJuly: average high 80 °F, low 53 °F 80°53° JulAugust: average high 79 °F, low 52 °F 79°52° AugSeptember: average high 69 °F, low 43 °F 69°43° SepOctober: average high 56 °F, low 33 °F 56°33° OctNovember: average high 42 °F, low 23 °F 42°23° NovDecember: average high 33 °F, low 16 °F 33°16° Dec

Precipitation by month inches

0″1″2″3″January: 2.25 in precipitation 2.3 JanFebruary: 1.82 in precipitation 1.8 FebMarch: 1.83 in precipitation 1.8 MarApril: 2.17 in precipitation 2.2 AprMay: 2.22 in precipitation 2.2 MayJune: 1.38 in precipitation 1.4 JunJuly: 1.02 in precipitation 1.0 JulAugust: 1.44 in precipitation 1.4 AugSeptember: 1.81 in precipitation 1.8 SepOctober: 2.35 in precipitation 2.4 OctNovember: 2.05 in precipitation 2.0 NovDecember: 2.05 in precipitation 2.0 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Park City, UT (within 1 mile); precipitation: Park City, UT (within 1 mile). 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.

840606a
Park City, UT · 2 mi
840985b
Park City, UT · 6 mi
841216a
Salt Lake City, UT · 10 mi
841096b
Salt Lake City, UT · 11 mi
840496a
Midway, UT · 11 mi
840615b
Peoa, UT · 12 mi
840926b
Sandy, UT · 14 mi
841587a
Salt Lake City, UT · 15 mi

All 3 ZIP codes in Park City → · Utah planting zones →

Questions about 84068

What planting zone is ZIP code 84068?

ZIP code 84068 (Park City, UT) is in USDA hardiness zone 5b on the 2023 map: the coldest night of an average winter reaches −15 to −10 °F (−26.1 to −23.3 °C).

When is the last frost in Park City, UT?

The median last spring frost (32 °F) near 84068 is May 29; after June 14 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Park City station.

When is the first frost in Park City, UT?

The median first fall frost near 84068 is September 25, giving a median frost-free growing season of 117 days.

When should I plant tomatoes in 84068?

Start tomato seeds indoors around Apr 3 – Apr 17 and set transplants outside around Jun 5 – Jun 19, one to three weeks after the median last frost.

How much rain and snow does 84068 get?

About 22.4 inches of precipitation a year (NOAA 1991–2020 normals, Park City station).

How hot do summers get in Park City, UT?

The average high peaks at 80 °F in July, with about 5 days a year at 90 °F or more.

What kind of soil does 84068 have?

The USDA soil survey maps Wanship at the center of ZIP 84068: loam, somewhat poorly drained, pH about 7.5 (slightly alkaline).

Did spring come early in Park City, UT in 2026?

Spring leaf-out near 84068 came on Mar 25 in 2026, 29 days earlier than the 1991–2020 average (Apr 23), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Park City, UT?

Long-day onions: the longest day near 84068 is 15 h 05 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).