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

Planting zone for 84013 — Cedar Valley, UT

ZIP code 84013 (Cedar Valley, Utah County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is June 2 and the first fall frost September 16.

Where ZIP 84013 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 frostJun 2
First frostSep 16
2012 zone6a

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 6a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Cedar Valley, 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 Cedar Valley, UT

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostJune 2median — 50% chance of a later frost
Safe for tender plantsJune 24only 10% chance of frost after
First fall frostSeptember 16median — 10% chance by Sep 1
Growing season103 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 19 and returns around September 26.

From the NOAA station Fairfield, UT — 2 miles away, elevation 4,879 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 84013

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Apr 21 – May 5
SpinachSow outdoors · Apr 21 – May 12
Broccoli, cabbageStart indoors · Mar 24 – Apr 7
Broccoli, cabbageTransplant · May 12 – May 26
Onion setsPlant outdoors · May 5 – May 19
PotatoesPlant outdoors · May 12 – May 26
LettuceSow outdoors · May 5 – May 19
Carrots, beetsSow outdoors · May 12 – May 26
TomatoesStart indoors · Apr 7 – Apr 21
TomatoesTransplant · Jun 9 – Jun 23
Peppers, eggplantStart indoors · Mar 24 – Apr 7
Peppers, eggplantTransplant · Jun 16 – Jun 30
BeansSow outdoors · Jun 9 – Jun 23
Sweet cornSow outdoors · Jun 9 – Jun 23
Cucumbers, squashSow outdoors · Jun 9 – Jun 23
Fall lettuce, spinachSow outdoors · Jul 22 – Aug 5
GarlicPlant cloves · Sep 2 – Oct 7
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Jun 2) and first fall frost (Sep 16) 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 84013 came on Mar 17 — 14 days earlier than the 1991–2020 average (Mar 31).

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.

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 107

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 248

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 151

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 Cedar Valley, UT.

Soil in Cedar Valley, UT

The soil mapped at the center of ZIP 84013 is Wales — 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 groupCwater soaks in slowly
Farmland classPrime farmland if irrigatedUSDA classification

Map unit: Wales loam, dry, 2 to 4 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 84013; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Cedar Valley, UT

Summer high90 °Faverage high, July
Winter low13 °Faverage low, January
Hot days43days a year at 90 °F or more
Freezing nights197nights a year at 32 °F or less
Growing degree days2,217base 50 °F — the season’s usable heat
Longest day15 h 03 mindaylight on June 21
Shortest day9 h 18 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation12.5 inper year, rain and melted snow
Snowfall34 inper year; 50 days with snow on the ground

Average high and low, by month

0°10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 39 °F, low 13 °F 39°13° JanFebruary: average high 45 °F, low 18 °F 45°18° FebMarch: average high 56 °F, low 25 °F 56°25° MarApril: average high 63 °F, low 30 °F 63°30° AprMay: average high 72 °F, low 37 °F 72°37° MayJune: average high 83 °F, low 44 °F 83°44° JunJuly: average high 90 °F, low 51 °F 90°51° JulAugust: average high 89 °F, low 49 °F 89°49° AugSeptember: average high 80 °F, low 40 °F 80°40° SepOctober: average high 67 °F, low 29 °F 67°29° OctNovember: average high 52 °F, low 20 °F 52°20° NovDecember: average high 40 °F, low 13 °F 40°13° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″January: 1.27 in precipitation, 10.7 in snowfall 1.3❄11 JanFebruary: 1.33 in precipitation, 5.9 in snowfall 1.3❄6 FebMarch: 1.17 in precipitation, 3.5 in snowfall 1.2❄4 MarApril: 1.18 in precipitation, 1.4 in snowfall 1.2❄1 AprMay: 1.37 in precipitation, 0.1 in snowfall 1.4 MayJune: 0.78 in precipitation 0.8 JunJuly: 0.67 in precipitation 0.7 JulAugust: 0.66 in precipitation 0.7 AugSeptember: 0.82 in precipitation 0.8 SepOctober: 1.15 in precipitation, 0.7 in snowfall 1.1❄1 OctNovember: 0.79 in precipitation, 3.4 in snowfall 0.8❄3 NovDecember: 1.32 in precipitation, 7.9 in snowfall 1.3❄8 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Fairfield, UT (2 mi away); precipitation: Fairfield, UT (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

840056b
Eagle Mountain, UT · 5 mi
840457a
Saratoga Springs, UT · 9 mi
840716b
Stockton, UT · 10 mi
840967a
Herriman, UT · 13 mi
840437a
Lehi, UT · 14 mi
840657a
Riverton, UT · 16 mi
840097a
South Jordan, UT · 18 mi
840207a
Draper, UT · 18 mi

Utah planting zones →

Questions about 84013

What planting zone is ZIP code 84013?

ZIP code 84013 (Cedar Valley, 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 Cedar Valley, UT?

The median last spring frost (32 °F) near 84013 is June 2; after June 24 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Fairfield station.

When is the first frost in Cedar Valley, UT?

The median first fall frost near 84013 is September 16, giving a median frost-free growing season of 103 days.

When should I plant tomatoes in 84013?

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

How much rain and snow does 84013 get?

About 12.5 inches of precipitation a year and 34 inches of snowfall (NOAA 1991–2020 normals, Fairfield station).

How hot do summers get in Cedar Valley, UT?

The average high peaks at 90 °F in July, with about 43 days a year at 90 °F or more.

What kind of soil does 84013 have?

The USDA soil survey maps Wales at the center of ZIP 84013: loam, well drained, pH about 8.5 (alkaline).

Did spring come early in Cedar Valley, UT in 2026?

Spring leaf-out near 84013 came on Mar 17 in 2026, 14 days earlier than the 1991–2020 average (Mar 31), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Cedar Valley, UT?

Long-day onions: the longest day near 84013 is 15 h 03 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).