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

Planting zone for 84049 — Midway, UT

ZIP code 84049 (Midway, Wasatch County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is May 31 and the first fall frost September 11.

Where ZIP 84049 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 31

First frostSep 11

2012 zone5b

Was 5b on the 2012 map — half a zone warmer 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 Midway, 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 Midway, UT

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMay 31median — 50% chance of a later frost

Safe for tender plantsJune 23only 10% chance of frost after

First fall frostSeptember 11median — 10% chance by Aug 14

Growing season101 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 12 and returns around September 25.

From the NOAA station Snake Creek Powerhouse, UT — 3 miles away, elevation 6,011 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 84049

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 19 – May 3

SpinachSow outdoors · Apr 19 – May 10

Broccoli, cabbageStart indoors · Mar 22 – Apr 5

Broccoli, cabbageTransplant · May 10 – May 24

Onion setsPlant outdoors · May 3 – May 17

PotatoesPlant outdoors · May 10 – May 24

LettuceSow outdoors · May 3 – May 17

Carrots, beetsSow outdoors · May 10 – May 24

TomatoesStart indoors · Apr 5 – Apr 19

TomatoesTransplant · Jun 7 – Jun 21

Peppers, eggplantStart indoors · Mar 22 – Apr 5

Peppers, eggplantTransplant · Jun 14 – Jun 28

BeansSow outdoors · Jun 7 – Jun 21

Sweet cornSow outdoors · Jun 7 – Jun 21

Cucumbers, squashSow outdoors · Jun 7 – Jun 21

Fall lettuce, spinachSow outdoors · Jul 17 – Jul 31

GarlicPlant cloves · Aug 28 – Oct 2

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 31) and first fall frost (Sep 11) 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 84049 came on Mar 22 — 25 days earlier than the 1991–2020 average (Apr 16).

average
Apr 162026
Mar 22

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.

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 Midway, UT.

Soil in Midway, UT

The soil mapped at the center of ZIP 84049 is Agassiz — very cobbly loam, somewhat excessively drained.

TextureVery cobbly loama good balance for most vegetables

pH7.9alkaline; most vegetables like 6.0–7.0

DrainageSomewhat excessively drainednatural drainage class

Organic matter3%moderate

Hydrologic groupDwater soaks in very slowly

Farmland classNot prime farmlandUSDA classification

Map unit: Agassiz very cobbly loam, 25 to 60 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 84049; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Midway, UT

Summer high88 °Faverage high, July

Winter low14 °Faverage low, January

Hot days28days a year at 90 °F or more

Freezing nights206nights a year at 32 °F or less

Growing degree days1,760base 50 °F — the season’s usable heat

Longest day15 h 04 mindaylight on June 21

Shortest day9 h 16 mindaylight on December 21

Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)

Precipitation21.8 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Snake Creek Powerhouse, UT (3 mi away); precipitation: Snake Creek Powerhouse, UT (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

840036a

American Fork, UT · 9 mi

840606a

Park City, UT · 10 mi

Park City, UT · 11 mi

841216a

Salt Lake City, UT · 12 mi

840627a

Pleasant Grove, UT · 12 mi

846046b

Provo, UT · 13 mi

Utah planting zones →

Questions about 84049

What planting zone is ZIP code 84049?

ZIP code 84049 (Midway, 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 Midway, UT?

The median last spring frost (32 °F) near 84049 is May 31; after June 23 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Snake Creek Powerhouse station.

When is the first frost in Midway, UT?

The median first fall frost near 84049 is September 11, giving a median frost-free growing season of 101 days.

When should I plant tomatoes in 84049?

Start tomato seeds indoors around Apr 5 – Apr 19 and set transplants outside around Jun 7 – Jun 21, one to three weeks after the median last frost.

How much rain and snow does 84049 get?

About 21.8 inches of precipitation a year (NOAA 1991–2020 normals, Snake Creek Powerhouse station).

How hot do summers get in Midway, UT?

The average high peaks at 88 °F in July, with about 28 days a year at 90 °F or more.

What kind of soil does 84049 have?

The USDA soil survey maps Agassiz at the center of ZIP 84049: very cobbly loam, somewhat excessively drained, pH about 7.9 (alkaline).

Did spring come early in Midway, UT in 2026?

Spring leaf-out near 84049 came on Mar 22 in 2026, 25 days earlier than the 1991–2020 average (Apr 16), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Midway, UT?

Long-day onions: the longest day near 84049 is 15 h 04 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 84049 change?

Yes. The 2012 USDA map put 84049 in zone 5b; the 2023 map puts it in zone 6a. The newer map uses 1991–2020 data and more weather stations.