Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 84629 — Fairview, UT

ZIP code 84629 (Fairview, Sanpete County) is in USDA zone 5b: the coldest winter night averages −15 to −10 °F. The median last spring frost is June 13 and the first fall frost September 17.

Where ZIP 84629 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.

Zone5b−15 to −10 °F

Coldest night−26.1 to −23.3 °C

Last frostJun 13

First frostSep 17

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 Fairview, 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 Fairview, UT

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostJune 13median — 50% chance of a later frost

Safe for tender plantsJune 30only 10% chance of frost after

First fall frostSeptember 17median — 10% chance by Sep 1

Growing season94 daysfrost-free, median

A hard freeze (28 °F) usually ends around June 1 and returns around September 26.

From the NOAA station Scofield-Skyline Mine, UT — 14 miles away, elevation 8,698 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 84629

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · May 2 – May 16

SpinachSow outdoors · May 2 – May 23

Broccoli, cabbageStart indoors · Apr 4 – Apr 18

Broccoli, cabbageTransplant · May 23 – Jun 6

Onion setsPlant outdoors · May 16 – May 30

PotatoesPlant outdoors · May 23 – Jun 6

LettuceSow outdoors · May 16 – May 30

Carrots, beetsSow outdoors · May 23 – Jun 6

TomatoesStart indoors · Apr 18 – May 2

TomatoesTransplant · Jun 20 – Jul 4

Peppers, eggplantStart indoors · Apr 4 – Apr 18

Peppers, eggplantTransplant · Jun 27 – Jul 11

BeansSow outdoors · Jun 20 – Jul 4

Sweet cornSow outdoors · Jun 20 – Jul 4

Cucumbers, squashSow outdoors · Jun 20 – Jul 4

Fall lettuce, spinachSow outdoors · Jul 23 – Aug 6

GarlicPlant cloves · Sep 3 – Oct 8

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Jun 13) and first fall frost (Sep 17) 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 84629 came on Mar 23 — 25 days earlier than the 1991–2020 average (Apr 17).

average
Apr 172026
Mar 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.

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 Fairview, UT.

Soil in Fairview, UT

The soil mapped at the center of ZIP 84629 is Fontreen — cobbly loam, well drained.

TextureCobbly loama good balance for most vegetables

pH8.2alkaline; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter3.5%moderate

Hydrologic groupBwater soaks in moderately

Farmland classNot prime farmlandUSDA classification

Map unit: Fontreen-Borvant complex, 4 to 25 percent slopes, eroded.

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 84629; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Fairview, UT

Summer high74 °Faverage high, July

Winter low12 °Faverage low, December

Hot days0days a year at 90 °F or more

Freezing nights227nights a year at 32 °F or less

Growing degree days905base 50 °F — the season’s usable heat

Longest day14 h 59 mindaylight on June 21

Shortest day9 h 21 mindaylight on December 21

Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully

Precipitation17.6 inper year, rain and melted snow

Snowfall106 inper year

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Scofield-Skyline Mine, UT (14 mi away); precipitation: Fairview 8n, UT (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

846325b

Fountain Green, UT · 13 mi

846475b

Mount Pleasant, UT · 17 mi

Spanish Fork, UT · 19 mi

Utah planting zones →

Questions about 84629

What planting zone is ZIP code 84629?

ZIP code 84629 (Fairview, 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 Fairview, UT?

The median last spring frost (32 °F) near 84629 is June 13; after June 30 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Scofield-Skyline Mine station.

When is the first frost in Fairview, UT?

The median first fall frost near 84629 is September 17, giving a median frost-free growing season of 94 days.

When should I plant tomatoes in 84629?

Start tomato seeds indoors around Apr 18 – May 2 and set transplants outside around Jun 20 – Jul 4, one to three weeks after the median last frost.

How much rain and snow does 84629 get?

About 17.6 inches of precipitation a year and 106 inches of snowfall (NOAA 1991–2020 normals, Fairview 8n station).

How hot do summers get in Fairview, UT?

The average high peaks at 74 °F in July, with about 0 days a year at 90 °F or more.

What kind of soil does 84629 have?

The USDA soil survey maps Fontreen at the center of ZIP 84629: cobbly loam, well drained, pH about 8.2 (alkaline).

Did spring come early in Fairview, UT in 2026?

Spring leaf-out near 84629 came on Mar 23 in 2026, 25 days earlier than the 1991–2020 average (Apr 17), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Fairview, UT?

Intermediate onions: the longest day near 84629 is 14 h 59 min, so day-neutral types bulb best; long-day varieties may not bulb fully.