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

Planting zone for 54876 — Stone Lake, WI

ZIP code 54876 (Stone Lake, Sawyer County) is in USDA zone 4a: the coldest winter night averages −30 to −25 °F. The median last spring frost is May 22 and the first fall frost September 23.

Where ZIP 54876 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.

Zone4a−30 to −25 °F

Coldest night−34.4 to −31.7 °C

Last frostMay 22

First frostSep 23

2012 zone3b

Was 3b 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 4a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Stone Lake, WI…

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 Stone Lake, WI

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMay 22median — 50% chance of a later frost

Safe for tender plantsJune 6only 10% chance of frost after

First fall frostSeptember 23median — 10% chance by Sep 3

Growing season124 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 8 and returns around October 3.

From the NOAA station Hayward Rs, WI — 12 miles away, elevation 1,201 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 54876

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 10 – Apr 24

SpinachSow outdoors · Apr 10 – May 1

Broccoli, cabbageStart indoors · Mar 13 – Mar 27

Broccoli, cabbageTransplant · May 1 – May 15

Onion setsPlant outdoors · Apr 24 – May 8

PotatoesPlant outdoors · May 1 – May 15

LettuceSow outdoors · Apr 24 – May 8

Carrots, beetsSow outdoors · May 1 – May 15

TomatoesStart indoors · Mar 27 – Apr 10

TomatoesTransplant · May 29 – Jun 12

Peppers, eggplantStart indoors · Mar 13 – Mar 27

Peppers, eggplantTransplant · Jun 5 – Jun 19

BeansSow outdoors · May 29 – Jun 12

Sweet cornSow outdoors · May 29 – Jun 12

Cucumbers, squashSow outdoors · May 29 – Jun 12

Fall lettuce, spinachSow outdoors · Jul 29 – Aug 12

GarlicPlant cloves · Sep 9 – Oct 14

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 22) and first fall frost (Sep 23) 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 54876 came on Apr 20 — 3 days earlier than the 1991–2020 average (Apr 23).

average
Apr 232026
Apr 20

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 Stone Lake, WI

The soil mapped at the center of ZIP 54876 is Haugen — sandy loam, moderately well drained.

TextureSandy loamdrains and warms fast; dries out and needs more feeding

pH5.3strongly acidic; most vegetables like 6.0–7.0

DrainageModerately well drainednatural drainage class

Organic matter5%high

Hydrologic groupCwater soaks in slowly

Farmland classNot prime farmlandUSDA classification

Map unit: Haugen, very stony-Greenwood complex, 0 to 15 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 54876; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Stone Lake, WI

Summer high79 °Faverage high, July

Winter low2 °Faverage low, January

Hot days3days a year at 90 °F or more

Freezing nights194nights a year at 32 °F or less

Growing degree days1,913base 50 °F — the season’s usable heat

Longest day15 h 44 mindaylight on June 21

Shortest day8 h 40 mindaylight on December 21

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

Precipitation40.3 inper year, rain and melted snow

Snowfall67 inper year; 121 days with snow on the ground

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Couderay 7 W, WI (2 mi away); precipitation: Couderay 7 W, WI (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 4a.

548284a

Couderay, WI · 10 mi

548174a

Birchwood, WI · 11 mi

548754a

Springbrook, WI · 14 mi

Wisconsin planting zones →

Questions about 54876

What planting zone is ZIP code 54876?

ZIP code 54876 (Stone Lake, WI) is in USDA hardiness zone 4a on the 2023 map: the coldest night of an average winter reaches −30 to −25 °F (−34.4 to −31.7 °C).

When is the last frost in Stone Lake, WI?

The median last spring frost (32 °F) near 54876 is May 22; after June 6 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Hayward Rs station.

When is the first frost in Stone Lake, WI?

The median first fall frost near 54876 is September 23, giving a median frost-free growing season of 124 days.

When should I plant tomatoes in 54876?

Start tomato seeds indoors around Mar 27 – Apr 10 and set transplants outside around May 29 – Jun 12, one to three weeks after the median last frost.

How much rain and snow does 54876 get?

About 40.3 inches of precipitation a year and 67 inches of snowfall (NOAA 1991–2020 normals, Couderay 7 W station).

How hot do summers get in Stone Lake, WI?

The average high peaks at 79 °F in July, with about 3 days a year at 90 °F or more.

What kind of soil does 54876 have?

The USDA soil survey maps Haugen at the center of ZIP 54876: sandy loam, moderately well drained, pH about 5.3 (strongly acidic).

Did spring come early in Stone Lake, WI in 2026?

Spring leaf-out near 54876 came on Apr 20 in 2026, 3 days earlier than the 1991–2020 average (Apr 23), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Stone Lake, WI?

Long-day onions: the longest day near 54876 is 15 h 44 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 54876 change?

Yes. The 2012 USDA map put 54876 in zone 3b; the 2023 map puts it in zone 4a. The newer map uses 1991–2020 data and more weather stations.