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

Planting zone for 84075 — Syracuse, UT

ZIP code 84075 (Syracuse, Davis County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is April 19 and the first fall frost October 19.

Where ZIP 84075 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.

Zone7b5 to 10 °F

Coldest night−15 to −12.2 °C

Last frostApr 19

First frostOct 19

2012 zone7a

Was 7a 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 7b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Syracuse, 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 Syracuse, UT

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostApril 19median — 50% chance of a later frost

Safe for tender plantsMay 7only 10% chance of frost after

First fall frostOctober 19median — 10% chance by Oct 6

Growing season181 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 1 and returns around November 1.

From the NOAA station Farmington 3 Nw, UT — 7 miles away, elevation 4,380 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 84075

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Mar 8 – Mar 22

SpinachSow outdoors · Mar 8 – Mar 29

Broccoli, cabbageStart indoors · Feb 8 – Feb 22

Broccoli, cabbageTransplant · Mar 29 – Apr 12

Onion setsPlant outdoors · Mar 22 – Apr 5

PotatoesPlant outdoors · Mar 29 – Apr 12

LettuceSow outdoors · Mar 22 – Apr 5

Carrots, beetsSow outdoors · Mar 29 – Apr 12

TomatoesStart indoors · Feb 22 – Mar 8

TomatoesTransplant · Apr 26 – May 10

Peppers, eggplantStart indoors · Feb 8 – Feb 22

Peppers, eggplantTransplant · May 3 – May 17

BeansSow outdoors · Apr 26 – May 10

Sweet cornSow outdoors · Apr 26 – May 10

Cucumbers, squashSow outdoors · Apr 26 – May 10

Fall lettuce, spinachSow outdoors · Aug 24 – Sep 7

GarlicPlant cloves · Oct 5 – Nov 9

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 19) and first fall frost (Oct 19) 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 84075 came on Mar 9 — 12 days earlier than the 1991–2020 average (Mar 21).

average
Mar 212026
Mar 9

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).

Soil in Syracuse, UT

The soil mapped at the center of ZIP 84075 is Pintailake — slightly decomposed plant material, very poorly drained.

TextureSlightly decomposed plant materialtop layer

pH5.6moderately acidic; most vegetables like 6.0–7.0

DrainageVery poorly drainedconsider raised beds

Organic matter85%high

Hydrologic groupDwater soaks in very slowly

Farmland classNot prime farmlandUSDA classification

Map unit: Pintailake-Eimarsh-Playas complex, 0 to 1 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 84075; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Syracuse, UT

Summer high91 °Faverage high, July

Winter low22 °Faverage low, January

Hot days56days a year at 90 °F or more

Freezing nights122nights a year at 32 °F or less

Growing degree days3,216base 50 °F — the season’s usable heat

Longest day15 h 08 mindaylight on June 21

Shortest day9 h 13 mindaylight on December 21

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

Precipitation20.6 inper year, rain and melted snow

Snowfall50 inper year

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Farmington 3 Nw, UT (7 mi away); precipitation: Farmington 3 Nw, UT (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

840167a

Clearfield, UT · 4 mi

840157a

Clearfield, UT · 4 mi

Clearfield, UT · 7 mi

Utah planting zones →

Questions about 84075

What planting zone is ZIP code 84075?

ZIP code 84075 (Syracuse, UT) is in USDA hardiness zone 7b on the 2023 map: the coldest night of an average winter reaches 5 to 10 °F (−15 to −12.2 °C).

When is the last frost in Syracuse, UT?

The median last spring frost (32 °F) near 84075 is April 19; after May 7 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Farmington 3 Nw station.

When is the first frost in Syracuse, UT?

The median first fall frost near 84075 is October 19, giving a median frost-free growing season of 181 days.

When should I plant tomatoes in 84075?

Start tomato seeds indoors around Feb 22 – Mar 8 and set transplants outside around Apr 26 – May 10, one to three weeks after the median last frost.

How much rain and snow does 84075 get?

About 20.6 inches of precipitation a year and 50 inches of snowfall (NOAA 1991–2020 normals, Farmington 3 Nw station).

How hot do summers get in Syracuse, UT?

The average high peaks at 91 °F in July, with about 56 days a year at 90 °F or more.

What kind of soil does 84075 have?

The USDA soil survey maps Pintailake at the center of ZIP 84075: slightly decomposed plant material, very poorly drained, pH about 5.6 (moderately acidic).

Did spring come early in Syracuse, UT in 2026?

Spring leaf-out near 84075 came on Mar 9 in 2026, 12 days earlier than the 1991–2020 average (Mar 21), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Syracuse, UT?

Long-day onions: the longest day near 84075 is 15 h 08 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 84075 change?

Yes. The 2012 USDA map put 84075 in zone 7a; the 2023 map puts it in zone 7b. The newer map uses 1991–2020 data and more weather stations.