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

Planting zone for 54849 — Lake Nebagamon, WI

ZIP code 54849 (Lake Nebagamon, Douglas County) is in USDA zone 4a: the coldest winter night averages −30 to −25 °F. The median last spring frost is May 24 and the first fall frost September 26.

Where ZIP 54849 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 24

First frostSep 26

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 Lake Nebagamon, 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 Lake Nebagamon, WI

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMay 24median — 50% chance of a later frost

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

First fall frostSeptember 26median — 10% chance by Sep 9

Growing season124 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 9 and returns around October 6.

From the NOAA station Brule Rs, WI — 7 miles away, elevation 1,001 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 54849

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 12 – Apr 26

SpinachSow outdoors · Apr 12 – May 3

Broccoli, cabbageStart indoors · Mar 15 – Mar 29

Broccoli, cabbageTransplant · May 3 – May 17

Onion setsPlant outdoors · Apr 26 – May 10

PotatoesPlant outdoors · May 3 – May 17

LettuceSow outdoors · Apr 26 – May 10

Carrots, beetsSow outdoors · May 3 – May 17

TomatoesStart indoors · Mar 29 – Apr 12

TomatoesTransplant · May 31 – Jun 14

Peppers, eggplantStart indoors · Mar 15 – Mar 29

Peppers, eggplantTransplant · Jun 7 – Jun 21

BeansSow outdoors · May 31 – Jun 14

Sweet cornSow outdoors · May 31 – Jun 14

Cucumbers, squashSow outdoors · May 31 – Jun 14

Fall lettuce, spinachSow outdoors · Aug 1 – Aug 15

GarlicPlant cloves · Sep 12 – Oct 17

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 24) and first fall frost (Sep 26) 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 54849 came on Apr 30 — 4 days later than the 1991–2020 average (Apr 26).

average
Apr 262026
Apr 30

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 4a in Wisconsin

419 plants native to the lower 48 states, recorded in Wisconsin, and rated by the USDA to survive −30 °F or colder — the bottom of zone 4a. 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 Lake Nebagamon, WI.

Soil in Lake Nebagamon, WI

The soil mapped at the center of ZIP 54849 is Loxley — mucky peat, very poorly drained.

TextureMucky peattop layer

DrainageVery poorly drainedconsider raised beds

Organic matter80%high

Hydrologic groupA/Ddrains fast once dried out; wet otherwise

Farmland classNot prime farmlandUSDA classification

Map unit: Loxley mucky peat, 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 54849; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Lake Nebagamon, WI

Summer high78 °Faverage high, July

Winter low2 °Faverage low, January

Hot days4days a year at 90 °F or more

Freezing nights190nights a year at 32 °F or less

Growing degree days1,755base 50 °F — the season’s usable heat

Longest day15 h 49 mindaylight on June 21

Shortest day8 h 34 mindaylight on December 21

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

Precipitation33.4 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: Brule Rs, WI (7 mi away); precipitation: Brule Rs, WI (7 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.

Solon Springs, WI · 9 mi

548544b

Maple, WI · 12 mi

548744b

South Range, WI · 12 mi

548474a

Iron River, WI · 16 mi

548384a

Gordon, WI · 17 mi

Wisconsin planting zones →

Questions about 54849

What planting zone is ZIP code 54849?

ZIP code 54849 (Lake Nebagamon, 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 Lake Nebagamon, WI?

The median last spring frost (32 °F) near 54849 is May 24; after June 6 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Brule Rs station.

When is the first frost in Lake Nebagamon, WI?

The median first fall frost near 54849 is September 26, giving a median frost-free growing season of 124 days.

When should I plant tomatoes in 54849?

Start tomato seeds indoors around Mar 29 – Apr 12 and set transplants outside around May 31 – Jun 14, one to three weeks after the median last frost.

How much rain and snow does 54849 get?

About 33.4 inches of precipitation a year (NOAA 1991–2020 normals, Brule Rs station).

How hot do summers get in Lake Nebagamon, WI?

The average high peaks at 78 °F in July, with about 4 days a year at 90 °F or more.

What kind of soil does 54849 have?

The USDA soil survey maps Loxley at the center of ZIP 54849: mucky peat, very poorly drained.

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

Spring leaf-out near 54849 came on Apr 30 in 2026, 4 days later than the 1991–2020 average (Apr 26), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Lake Nebagamon, WI?

Long-day onions: the longest day near 54849 is 15 h 49 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 54849 change?

Yes. The 2012 USDA map put 54849 in zone 3b; the 2023 map puts it in zone 4a. The newer map uses 1991–2020 data and more weather stations.