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

Planting zone for 84718 — Cannonville, UT

ZIP code 84718 (Cannonville, Garfield County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is May 23 and the first fall frost September 27.

Where ZIP 84718 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 frostMay 23
First frostSep 27
2012 zone6b

Was 6b on the 2012 map — half a zone colder now. 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 Cannonville, 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 Cannonville, UT

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 23median — 50% chance of a later frost
Safe for tender plantsJune 9only 10% chance of frost after
First fall frostSeptember 27median — 10% chance by Sep 13
Growing season125 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 7 and returns around October 8.

From the NOAA station Bryce Canyon Np Hqrs, UT — 6 miles away, elevation 7,891 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 84718

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Apr 11 – Apr 25
SpinachSow outdoors · Apr 11 – May 2
Broccoli, cabbageStart indoors · Mar 14 – Mar 28
Broccoli, cabbageTransplant · May 2 – May 16
Onion setsPlant outdoors · Apr 25 – May 9
PotatoesPlant outdoors · May 2 – May 16
LettuceSow outdoors · Apr 25 – May 9
Carrots, beetsSow outdoors · May 2 – May 16
TomatoesStart indoors · Mar 28 – Apr 11
TomatoesTransplant · May 30 – Jun 13
Peppers, eggplantStart indoors · Mar 14 – Mar 28
Peppers, eggplantTransplant · Jun 6 – Jun 20
BeansSow outdoors · May 30 – Jun 13
Sweet cornSow outdoors · May 30 – Jun 13
Cucumbers, squashSow outdoors · May 30 – Jun 13
Fall lettuce, spinachSow outdoors · Aug 2 – Aug 16
GarlicPlant cloves · Sep 13 – Oct 18
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 23) and first fall frost (Sep 27) 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 84718 came on Mar 11 — 23 days earlier than the 1991–2020 average (Apr 3).

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 Cannonville, UT.

Soil in Cannonville, UT

The soil mapped at the center of ZIP 84718 is Bodot — silty clay, well drained.

TextureSilty clayholds water and nutrients; slow to drain and warm up
pH8.2alkaline; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2.3%moderate
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Bodot, cool-Sili complex, 2 to 8 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 84718; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Cannonville, UT

Summer high80 °Faverage high, July
Winter low17 °Faverage low, January
Hot days1days a year at 90 °F or more
Freezing nights216nights a year at 32 °F or less
Growing degree days1,554base 50 °F — the season’s usable heat
Longest day14 h 46 mindaylight on June 21
Shortest day9 h 34 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation16.6 inper year, rain and melted snow
Snowfall87 inper year; 120 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 37 °F, low 17 °F 37°17° JanFebruary: average high 39 °F, low 18 °F 39°18° FebMarch: average high 46 °F, low 23 °F 46°23° MarApril: average high 54 °F, low 29 °F 54°29° AprMay: average high 63 °F, low 37 °F 63°37° MayJune: average high 75 °F, low 45 °F 75°45° JunJuly: average high 80 °F, low 52 °F 80°52° JulAugust: average high 78 °F, low 50 °F 78°50° AugSeptember: average high 70 °F, low 42 °F 70°42° SepOctober: average high 58 °F, low 32 °F 58°32° OctNovember: average high 46 °F, low 23 °F 46°23° NovDecember: average high 37 °F, low 17 °F 37°17° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″January: 1.91 in precipitation, 19.8 in snowfall 1.9❄20 JanFebruary: 1.70 in precipitation, 18.1 in snowfall 1.7❄18 FebMarch: 1.27 in precipitation, 13.2 in snowfall 1.3❄13 MarApril: 0.77 in precipitation, 5.9 in snowfall 0.8❄6 AprMay: 0.91 in precipitation, 1.5 in snowfall 0.9❄2 MayJune: 0.47 in precipitation, 0.2 in snowfall 0.5 JunJuly: 1.55 in precipitation 1.6 JulAugust: 1.94 in precipitation 1.9 AugSeptember: 1.78 in precipitation 1.8 SepOctober: 1.73 in precipitation, 3 in snowfall 1.7❄3 OctNovember: 1.28 in precipitation, 9.7 in snowfall 1.3❄10 NovDecember: 1.34 in precipitation, 15.3 in snowfall 1.3❄15 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Bryce Canyon Np Hqrs, UT (6 mi away); precipitation: Bryce Canyon Np Hqrs, UT (6 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.

847766a
Tropic, UT · 3 mi
847646a
Bryce, UT · 16 mi
847366b
Henrieville, UT · 17 mi
847356a
Hatch, UT · 21 mi
847106a
Alton, UT · 25 mi
847417a
Kanab, UT · 29 mi
847596a
Panguitch, UT · 29 mi
847267a
Escalante, UT · 30 mi

Utah planting zones →

Questions about 84718

What planting zone is ZIP code 84718?

ZIP code 84718 (Cannonville, 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 Cannonville, UT?

The median last spring frost (32 °F) near 84718 is May 23; after June 9 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Bryce Canyon Np Hqrs station.

When is the first frost in Cannonville, UT?

The median first fall frost near 84718 is September 27, giving a median frost-free growing season of 125 days.

When should I plant tomatoes in 84718?

Start tomato seeds indoors around Mar 28 – Apr 11 and set transplants outside around May 30 – Jun 13, one to three weeks after the median last frost.

How much rain and snow does 84718 get?

About 16.6 inches of precipitation a year and 87 inches of snowfall (NOAA 1991–2020 normals, Bryce Canyon Np Hqrs station).

How hot do summers get in Cannonville, UT?

The average high peaks at 80 °F in July, with about 1 days a year at 90 °F or more.

What kind of soil does 84718 have?

The USDA soil survey maps Bodot at the center of ZIP 84718: silty clay, well drained, pH about 8.2 (alkaline).

Did spring come early in Cannonville, UT in 2026?

Spring leaf-out near 84718 came on Mar 11 in 2026, 23 days earlier than the 1991–2020 average (Apr 3), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Cannonville, UT?

Intermediate onions: the longest day near 84718 is 14 h 46 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 84718 change?

Yes. The 2012 USDA map put 84718 in zone 6b; the 2023 map puts it in zone 6a. The newer map uses 1991–2020 data and more weather stations.