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

Planting zone for 53010 — Campbellsport, WI

ZIP code 53010 (Campbellsport, Fond du Lac County) is in USDA zone 5a: the coldest winter night averages −20 to −15 °F. The median last spring frost is April 27 and the first fall frost October 19.

Where ZIP 53010 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.

Zone5a−20 to −15 °F
Coldest night−28.9 to −26.1 °C
Last frostApr 27
First frostOct 19
2012 zone5a

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 5a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Campbellsport, 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 Campbellsport, WI

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 27median — 50% chance of a later frost
Safe for tender plantsMay 11only 10% chance of frost after
First fall frostOctober 19median — 10% chance by Oct 2
Growing season174 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 15 and returns around October 31.

From the NOAA station Fond Du Lac 2 Sw, WI — 14 miles away, elevation 771 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 53010

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 16 – Mar 30
SpinachSow outdoors · Mar 16 – Apr 6
Broccoli, cabbageStart indoors · Feb 16 – Mar 2
Broccoli, cabbageTransplant · Apr 6 – Apr 20
Onion setsPlant outdoors · Mar 30 – Apr 13
PotatoesPlant outdoors · Apr 6 – Apr 20
LettuceSow outdoors · Mar 30 – Apr 13
Carrots, beetsSow outdoors · Apr 6 – Apr 20
TomatoesStart indoors · Mar 2 – Mar 16
TomatoesTransplant · May 4 – May 18
Peppers, eggplantStart indoors · Feb 16 – Mar 2
Peppers, eggplantTransplant · May 11 – May 25
BeansSow outdoors · May 4 – May 18
Sweet cornSow outdoors · May 4 – May 18
Cucumbers, squashSow outdoors · May 4 – May 18
Fall lettuce, spinachSow outdoors · Aug 24 – Sep 7
GarlicPlant cloves · Oct 5 – Nov 9
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 27) and first fall frost (Oct 19) 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 53010 came on Apr 10 — 6 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).

Soil in Campbellsport, WI

The soil mapped at the center of ZIP 53010 is Dodge — silt loam, well drained.

TextureSilt loama good balance for most vegetables
pH6.8neutral; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2%moderate
Hydrologic groupCwater soaks in slowly
Farmland classprime farmlandUSDA classification

Map unit: Dodge silt loam, 2 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 53010; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Campbellsport, WI

Summer high82 °Faverage high, July
Winter low12 °Faverage low, January
Hot days7days a year at 90 °F or more
Freezing nights141nights a year at 32 °F or less
Growing degree days2,724base 50 °F — the season’s usable heat
Longest day15 h 26 mindaylight on June 21
Shortest day8 h 56 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation33.9 inper year, rain and melted snow

Average high and low, by month

0°10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 26 °F, low 12 °F 26°12° JanFebruary: average high 31 °F, low 15 °F 31°15° FebMarch: average high 42 °F, low 25 °F 42°25° MarApril: average high 56 °F, low 36 °F 56°36° AprMay: average high 68 °F, low 48 °F 68°48° MayJune: average high 78 °F, low 58 °F 78°58° JunJuly: average high 82 °F, low 63 °F 82°63° JulAugust: average high 79 °F, low 62 °F 79°62° AugSeptember: average high 72 °F, low 53 °F 72°53° SepOctober: average high 59 °F, low 42 °F 59°42° OctNovember: average high 44 °F, low 30 °F 44°30° NovDecember: average high 32 °F, low 18 °F 32°18° Dec

Precipitation by month inches

0″1″2″3″4″5″January: 1.38 in precipitation 1.4 JanFebruary: 1.31 in precipitation 1.3 FebMarch: 1.86 in precipitation 1.9 MarApril: 3.78 in precipitation 3.8 AprMay: 3.72 in precipitation 3.7 MayJune: 4.45 in precipitation 4.5 JunJuly: 3.75 in precipitation 3.8 JulAugust: 3.78 in precipitation 3.8 AugSeptember: 3.39 in precipitation 3.4 SepOctober: 2.86 in precipitation 2.9 OctNovember: 1.98 in precipitation 2.0 NovDecember: 1.60 in precipitation 1.6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Fond Du Lac 2 Sw, WI (14 mi away); precipitation: Kewaskum 1.8 Wnw, WI (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

4 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

530195a
Eden, WI · 6 mi
530405b
Kewaskum, WI · 7 mi
530115b
Cascade, WI · 10 mi
530485a
Lomira, WI · 10 mi
549375b
Fond Du Lac, WI · 10 mi
530015b
Adell, WI · 11 mi
530025a
Allenton, WI · 11 mi
530915a
Theresa, WI · 11 mi

Wisconsin planting zones →

Questions about 53010

What planting zone is ZIP code 53010?

ZIP code 53010 (Campbellsport, WI) is in USDA hardiness zone 5a on the 2023 map: the coldest night of an average winter reaches −20 to −15 °F (−28.9 to −26.1 °C).

When is the last frost in Campbellsport, WI?

The median last spring frost (32 °F) near 53010 is April 27; after May 11 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Fond Du Lac 2 Sw station.

When is the first frost in Campbellsport, WI?

The median first fall frost near 53010 is October 19, giving a median frost-free growing season of 174 days.

When should I plant tomatoes in 53010?

Start tomato seeds indoors around Mar 2 – Mar 16 and set transplants outside around May 4 – May 18, one to three weeks after the median last frost.

How much rain and snow does 53010 get?

About 33.9 inches of precipitation a year (NOAA 1991–2020 normals, Kewaskum 1.8 Wnw station).

How hot do summers get in Campbellsport, 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 53010 have?

The USDA soil survey maps Dodge at the center of ZIP 53010: silt loam, well drained, pH about 6.8 (neutral).

Did spring come early in Campbellsport, WI in 2026?

Spring leaf-out near 53010 came on Apr 10 in 2026, 6 days earlier than the 1991–2020 average (Apr 16), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Campbellsport, WI?

Long-day onions: the longest day near 53010 is 15 h 26 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).