Planting zone for 54138 — Lakewood, WI
ZIP code 54138 (Lakewood, Oconto County) is in USDA zone 4b: the coldest winter night averages −25 to −20 °F. The median last spring frost is May 22 and the first fall frost September 28.
Where ZIP 54138 is
Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoomNot 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.
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 4b means →
Frost forecast — next 7 nights
live from the National Weather ServiceLoading the forecast for Lakewood, 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 Lakewood, WI
A hard freeze (28 °F) usually ends around May 9 and returns around October 8.
From the NOAA station Lakewood 3 Ne, WI — 4 miles away, elevation 1,198 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 54138
Counted from the median last spring frost (May 22) and first fall frost (Sep 28) 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 54138 came on Apr 18 — 4 days earlier than the 1991–2020 average (Apr 22).
Apr 222026
Apr 18
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 4b in Wisconsin
486 plants native to the lower 48 states, recorded in Wisconsin, and rated by the USDA to survive −25 °F or colder — the bottom of zone 4b. Each links to its USDA PLANTS profile.
Trees 48
Shrubs 89
Wildflowers & perennials 178
Grasses 152
Vines 4
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 Lakewood, WI.
Soil in Lakewood, WI
The soil mapped at the center of ZIP 54138 is Pence — sandy loam, somewhat excessively drained.
Map unit: Pence sandy loam, 0 to 6 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 54138; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.
Climate in Lakewood, WI
Average high and low, by month
Precipitation by month inches · ❄ = snowfall
NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Lakewood 3 Ne, WI (4 mi away); precipitation: Lakewood 3 Ne, WI (4 mi away). Daylight is calculated from latitude.
Nearby ZIP codes
1 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.
Questions about 54138
What planting zone is ZIP code 54138?
ZIP code 54138 (Lakewood, WI) is in USDA hardiness zone 4b on the 2023 map: the coldest night of an average winter reaches −25 to −20 °F (−31.7 to −28.9 °C).
When is the last frost in Lakewood, WI?
The median last spring frost (32 °F) near 54138 is May 22; after June 3 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Lakewood 3 Ne station.
When is the first frost in Lakewood, WI?
The median first fall frost near 54138 is September 28, giving a median frost-free growing season of 129 days.
When should I plant tomatoes in 54138?
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 54138 get?
About 32.8 inches of precipitation a year and 61 inches of snowfall (NOAA 1991–2020 normals, Lakewood 3 Ne station).
How hot do summers get in Lakewood, WI?
The average high peaks at 79 °F in July, with about 5 days a year at 90 °F or more.
What kind of soil does 54138 have?
The USDA soil survey maps Pence at the center of ZIP 54138: sandy loam, somewhat excessively drained, pH about 5.9 (moderately acidic).
Did spring come early in Lakewood, WI in 2026?
Spring leaf-out near 54138 came on Apr 18 in 2026, 4 days earlier than the 1991–2020 average (Apr 22), according to the USA National Phenology Network Spring Index.
What kind of onions grow in Lakewood, WI?
Long-day onions: the longest day near 54138 is 15 h 40 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).