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

Planting zone for 54935 — Fond Du Lac, WI

ZIP code 54935 (Fond Du Lac, Fond du Lac County) is in USDA zone 5b: the coldest winter night averages −15 to −10 °F. The median last spring frost is May 1 and the first fall frost October 12.

Where ZIP 54935 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.

Zone5b−15 to −10 °F
Coldest night−26.1 to −23.3 °C
Last frostMay 1
First frostOct 12
2012 zone5a

Was 5a 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 5b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Fond Du Lac, 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 Fond Du Lac, WI

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 1median — 50% chance of a later frost
Safe for tender plantsMay 17only 10% chance of frost after
First fall frostOctober 12median — 10% chance by Sep 28
Growing season162 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 20 and returns around October 24.

From the NOAA station Fond Du Lac Wwtp, WI — 2 miles away, elevation 751 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 54935

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 20 – Apr 3
SpinachSow outdoors · Mar 20 – Apr 10
Broccoli, cabbageStart indoors · Feb 20 – Mar 6
Broccoli, cabbageTransplant · Apr 10 – Apr 24
Onion setsPlant outdoors · Apr 3 – Apr 17
PotatoesPlant outdoors · Apr 10 – Apr 24
LettuceSow outdoors · Apr 3 – Apr 17
Carrots, beetsSow outdoors · Apr 10 – Apr 24
TomatoesStart indoors · Mar 6 – Mar 20
TomatoesTransplant · May 8 – May 22
Peppers, eggplantStart indoors · Feb 20 – Mar 6
Peppers, eggplantTransplant · May 15 – May 29
BeansSow outdoors · May 8 – May 22
Sweet cornSow outdoors · May 8 – May 22
Cucumbers, squashSow outdoors · May 8 – May 22
Fall lettuce, spinachSow outdoors · Aug 17 – Aug 31
GarlicPlant cloves · Sep 28 – Nov 2
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 1) and first fall frost (Oct 12) 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 54935 came on Apr 8 — 8 days earlier than the 1991–2020 average (Apr 16).

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 5b in Wisconsin

518 plants native to the lower 48 states, recorded in Wisconsin, and rated by the USDA to survive −15 °F or colder — the bottom of zone 5b. Each links to its USDA PLANTS profile.

Trees 49

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican chestnut115 ft · blooms early summer · high shade tolerance · to −33 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °Farborvitae50 ft · blooms mid spring · medium shade tolerance · to −33 °F

Shrubs 93

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °FAllegheny serviceberry35 ft · blooms early spring · low shade tolerance · to −38 °Falternateleaf dogwood25 ft · blooms mid spring · low shade tolerance · to −47 °FAmerican black currant3 ft · blooms early spring · to −46 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican hornbeam30 ft · blooms mid spring · low shade tolerance · to −34 °F

Wildflowers & perennials 197

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °FAmerican bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °FAmerican licorice4 ft · blooms late spring · medium shade tolerance · to −38 °FAmerican lotus3 ft · blooms mid summer · high shade tolerance · to −36 °FAmerican pokeweed7 ft · blooms mid summer · low shade tolerance · to −33 °F

Grasses 159

American beachgrass2.5 ft · blooms spring · high shade tolerance · to −28 °Farctic brome3 ft · blooms early summer · low shade tolerance · to −33 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °Fbeaked sedge4 ft · blooms late spring · low shade tolerance · to −38 °Fbeaked spikerush3 ft · blooms late spring · high shade tolerance · to −28 °FBebb's sedge3 ft · blooms late spring · low shade tolerance · to −38 °F

Vines 5

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Friverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °Fsummer grape30 ft · blooms late spring · low shade tolerance · to −23 °FVirginia creeper1 ft · blooms late spring · medium shade tolerance · to −28 °F

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 Fond Du Lac, WI.

Soil in Fond Du Lac, WI

The soil mapped at the center of ZIP 54935 is Manawa — silty clay loam, somewhat poorly drained.

TextureSilty clay loamholds water and nutrients; slow to drain and warm up
pH7.0neutral; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter3%moderate
Hydrologic groupC/Dslow when drained; wet otherwise
Farmland classPrime farmland if drainedUSDA classification

Map unit: Manawa silty clay loam, 0 to 3 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 54935; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Fond Du Lac, WI

Summer high80 °Faverage high, July
Winter low9 °Faverage low, January
Hot days5days a year at 90 °F or more
Freezing nights149nights a year at 32 °F or less
Growing degree days2,384base 50 °F — the season’s usable heat
Longest day15 h 27 mindaylight on June 21
Shortest day8 h 55 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation31.4 inper year, rain and melted snow
Snowfall38 inper year; 75 days with snow on the ground

Average high and low, by month

0°10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 25 °F, low 9 °F 25°9° JanFebruary: average high 28 °F, low 12 °F 28°12° FebMarch: average high 40 °F, low 22 °F 40°22° MarApril: average high 53 °F, low 34 °F 53°34° AprMay: average high 66 °F, low 46 °F 66°46° MayJune: average high 76 °F, low 56 °F 76°56° JunJuly: average high 80 °F, low 61 °F 80°61° JulAugust: average high 78 °F, low 59 °F 78°59° AugSeptember: average high 71 °F, low 51 °F 71°51° SepOctober: average high 57 °F, low 39 °F 57°39° OctNovember: average high 43 °F, low 27 °F 43°27° NovDecember: average high 31 °F, low 16 °F 31°16° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 1.22 in precipitation, 10.8 in snowfall 1.2❄11 JanFebruary: 1.05 in precipitation, 9.9 in snowfall 1.1❄10 FebMarch: 1.88 in precipitation, 5.7 in snowfall 1.9❄6 MarApril: 3.06 in precipitation, 2.4 in snowfall 3.1❄2 AprMay: 3.43 in precipitation 3.4 MayJune: 4.36 in precipitation 4.4 JunJuly: 3.62 in precipitation 3.6 JulAugust: 3.47 in precipitation 3.5 AugSeptember: 3.19 in precipitation 3.2 SepOctober: 2.79 in precipitation, 0.4 in snowfall 2.8 OctNovember: 1.91 in precipitation, 1.7 in snowfall 1.9❄2 NovDecember: 1.47 in precipitation, 7.1 in snowfall 1.5❄7 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Fond Du Lac Wwtp, WI (2 mi away); precipitation: Fond Du Lac Wwtp, WI (2 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.

549365b
Fond Du Lac, WI · <1 mi
549375b
Fond Du Lac, WI · 4 mi
549795b
Van Dyne, WI · 8 mi
530195a
Eden, WI · 8 mi
530655a
Oakfield, WI · 10 mi
530575b
Mount Calvary, WI · 10 mi
549325a
Eldorado, WI · 10 mi
530495b
Malone, WI · 10 mi

All 3 ZIP codes in Fond Du Lac → · Wisconsin planting zones →

Questions about 54935

What planting zone is ZIP code 54935?

ZIP code 54935 (Fond Du Lac, WI) is in USDA hardiness zone 5b on the 2023 map: the coldest night of an average winter reaches −15 to −10 °F (−26.1 to −23.3 °C).

When is the last frost in Fond Du Lac, WI?

The median last spring frost (32 °F) near 54935 is May 1; after May 17 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Fond Du Lac Wwtp station.

When is the first frost in Fond Du Lac, WI?

The median first fall frost near 54935 is October 12, giving a median frost-free growing season of 162 days.

When should I plant tomatoes in 54935?

Start tomato seeds indoors around Mar 6 – Mar 20 and set transplants outside around May 8 – May 22, one to three weeks after the median last frost.

How much rain and snow does 54935 get?

About 31.4 inches of precipitation a year and 38 inches of snowfall (NOAA 1991–2020 normals, Fond Du Lac Wwtp station).

How hot do summers get in Fond Du Lac, WI?

The average high peaks at 80 °F in July, with about 5 days a year at 90 °F or more.

What kind of soil does 54935 have?

The USDA soil survey maps Manawa at the center of ZIP 54935: silty clay loam, somewhat poorly drained, pH about 7.0 (neutral).

Did spring come early in Fond Du Lac, WI in 2026?

Spring leaf-out near 54935 came on Apr 8 in 2026, 8 days earlier than the 1991–2020 average (Apr 16), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Fond Du Lac, WI?

Long-day onions: the longest day near 54935 is 15 h 27 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 54935 change?

Yes. The 2012 USDA map put 54935 in zone 5a; the 2023 map puts it in zone 5b. The newer map uses 1991–2020 data and more weather stations.