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

Planting zone for 54930 — Coloma, WI

ZIP code 54930 (Coloma, Waushara County) is in USDA zone 4b: the coldest winter night averages −25 to −20 °F. The median last spring frost is May 10 and the first fall frost October 3.

Where ZIP 54930 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.

Zone4b−25 to −20 °F
Coldest night−31.7 to −28.9 °C
Last frostMay 10
First frostOct 3
2012 zone4b

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 Service

Loading the forecast for Coloma, 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 Coloma, WI

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 10median — 50% chance of a later frost
Safe for tender plantsMay 24only 10% chance of frost after
First fall frostOctober 3median — 10% chance by Sep 20
Growing season146 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 30 and returns around October 14.

From the NOAA station Hancock Exp Farm, WI — 6 miles away, elevation 1,093 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 54930

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 29 – Apr 12
SpinachSow outdoors · Mar 29 – Apr 19
Broccoli, cabbageStart indoors · Mar 1 – Mar 15
Broccoli, cabbageTransplant · Apr 19 – May 3
Onion setsPlant outdoors · Apr 12 – Apr 26
PotatoesPlant outdoors · Apr 19 – May 3
LettuceSow outdoors · Apr 12 – Apr 26
Carrots, beetsSow outdoors · Apr 19 – May 3
TomatoesStart indoors · Mar 15 – Mar 29
TomatoesTransplant · May 17 – May 31
Peppers, eggplantStart indoors · Mar 1 – Mar 15
Peppers, eggplantTransplant · May 24 – Jun 7
BeansSow outdoors · May 17 – May 31
Sweet cornSow outdoors · May 17 – May 31
Cucumbers, squashSow outdoors · May 17 – May 31
Fall lettuce, spinachSow outdoors · Aug 8 – Aug 22
GarlicPlant cloves · Sep 19 – Oct 24
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 10) and first fall frost (Oct 3) 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 54930 came on Apr 11 — 5 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 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

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 89

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 178

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 152

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 4

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 °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 Coloma, WI.

Soil in Coloma, WI

The soil mapped at the center of ZIP 54930 is Coloma — loamy sand, excessively drained.

TextureLoamy sanddrains and warms fast; dries out and needs more feeding
pH5.9moderately acidic; most vegetables like 6.0–7.0
DrainageExcessively drainednatural drainage class
Organic matter1.25%low — add compost
Hydrologic groupAwater soaks in fast
Farmland classNot prime farmlandUSDA classification

Map unit: Coloma loamy sand, 12 to 30 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 54930; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Coloma, WI

Summer high82 °Faverage high, July
Winter low7 °Faverage low, January
Hot days7days a year at 90 °F or more
Freezing nights160nights a year at 32 °F or less
Growing degree days2,407base 50 °F — the season’s usable heat
Longest day15 h 29 mindaylight on June 21
Shortest day8 h 53 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation34.3 inper year, rain and melted snow
Snowfall43 inper year; 94 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 7 °F 25°7° JanFebruary: average high 30 °F, low 10 °F 30°10° FebMarch: average high 41 °F, low 21 °F 41°21° MarApril: average high 55 °F, low 33 °F 55°33° AprMay: average high 68 °F, low 45 °F 68°45° MayJune: average high 77 °F, low 55 °F 77°55° JunJuly: average high 82 °F, low 59 °F 82°59° JulAugust: average high 79 °F, low 57 °F 79°57° AugSeptember: average high 72 °F, low 49 °F 72°49° SepOctober: average high 58 °F, low 37 °F 58°37° OctNovember: average high 43 °F, low 26 °F 43°26° NovDecember: average high 30 °F, low 14 °F 30°14° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 1.14 in precipitation, 12.8 in snowfall 1.1❄13 JanFebruary: 0.97 in precipitation, 8.2 in snowfall 1.0❄8 FebMarch: 1.86 in precipitation, 8.3 in snowfall 1.9❄8 MarApril: 3.57 in precipitation, 2.7 in snowfall 3.6❄3 AprMay: 4.19 in precipitation 4.2 MayJune: 4.95 in precipitation 5.0 JunJuly: 4.15 in precipitation 4.2 JulAugust: 4.02 in precipitation 4.0 AugSeptember: 3.31 in precipitation 3.3 SepOctober: 2.71 in precipitation, 0.3 in snowfall 2.7 OctNovember: 1.98 in precipitation, 3.3 in snowfall 2.0❄3 NovDecember: 1.42 in precipitation, 7.5 in snowfall 1.4❄8 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Hancock Exp Farm, WI (6 mi away); precipitation: Hancock Exp Farm, WI (6 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.

549434b
Hancock, WI · 6 mi
539645a
Westfield, WI · 9 mi
549664b
Plainfield, WI · 13 mi
549825a
Wautoma, WI · 13 mi
539364b
Grand Marsh, WI · 14 mi
539344b
Friendship, WI · 14 mi
539104b
Adams, WI · 16 mi
539525a
Oxford, WI · 17 mi

Wisconsin planting zones →

Questions about 54930

What planting zone is ZIP code 54930?

ZIP code 54930 (Coloma, 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 Coloma, WI?

The median last spring frost (32 °F) near 54930 is May 10; after May 24 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Hancock Exp Farm station.

When is the first frost in Coloma, WI?

The median first fall frost near 54930 is October 3, giving a median frost-free growing season of 146 days.

When should I plant tomatoes in 54930?

Start tomato seeds indoors around Mar 15 – Mar 29 and set transplants outside around May 17 – May 31, one to three weeks after the median last frost.

How much rain and snow does 54930 get?

About 34.3 inches of precipitation a year and 43 inches of snowfall (NOAA 1991–2020 normals, Hancock Exp Farm station).

How hot do summers get in Coloma, WI?

The average high peaks at 82 °F in July, with about 7 days a year at 90 °F or more.

What kind of soil does 54930 have?

The USDA soil survey maps Coloma at the center of ZIP 54930: loamy sand, excessively drained, pH about 5.9 (moderately acidic).

Did spring come early in Coloma, WI in 2026?

Spring leaf-out near 54930 came on Apr 11 in 2026, 5 days earlier than the 1991–2020 average (Apr 16), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Coloma, WI?

Long-day onions: the longest day near 54930 is 15 h 29 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).