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

Planting zone for 53807 — Cuba City, WI

ZIP code 53807 (Cuba City, Grant County) is in USDA zone 5a: the coldest winter night averages −20 to −15 °F. The median last spring frost is April 30 and the first fall frost October 13.

Where ZIP 53807 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 30
First frostOct 13
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 Cuba City, 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 Cuba City, WI

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 30median — 50% chance of a later frost
Safe for tender plantsMay 13only 10% chance of frost after
First fall frostOctober 13median — 10% chance by Sep 29
Growing season166 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 17 and returns around October 22.

From the NOAA station Platteville, WI — 9 miles away, elevation 991 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 53807

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 19 – Apr 2
SpinachSow outdoors · Mar 19 – Apr 9
Broccoli, cabbageStart indoors · Feb 19 – Mar 5
Broccoli, cabbageTransplant · Apr 9 – Apr 23
Onion setsPlant outdoors · Apr 2 – Apr 16
PotatoesPlant outdoors · Apr 9 – Apr 23
LettuceSow outdoors · Apr 2 – Apr 16
Carrots, beetsSow outdoors · Apr 9 – Apr 23
TomatoesStart indoors · Mar 5 – Mar 19
TomatoesTransplant · May 7 – May 21
Peppers, eggplantStart indoors · Feb 19 – Mar 5
Peppers, eggplantTransplant · May 14 – May 28
BeansSow outdoors · May 7 – May 21
Sweet cornSow outdoors · May 7 – May 21
Cucumbers, squashSow outdoors · May 7 – May 21
Fall lettuce, spinachSow outdoors · Aug 18 – Sep 1
GarlicPlant cloves · Sep 29 – Nov 3
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 30) and first fall frost (Oct 13) 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 53807 came on Mar 28 — 15 days earlier than the 1991–2020 average (Apr 12).

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 Cuba City, WI

The soil mapped at the center of ZIP 53807 is Tama — silt loam, well drained.

TextureSilt loama good balance for most vegetables
pH6.2slightly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter3.5%moderate
Hydrologic groupCwater soaks in slowly
Farmland classprime farmlandUSDA classification

Map unit: Tama silt loam, driftless, 2 to 6 percent slopes, moderately eroded.

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 53807; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Cuba City, WI

Summer high82 °Faverage high, July
Winter low10 °Faverage low, January
Hot days6days a year at 90 °F or more
Freezing nights154nights a year at 32 °F or less
Growing degree days2,688base 50 °F — the season’s usable heat
Longest day15 h 19 mindaylight on June 21
Shortest day9 h 03 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation37.6 inper year, rain and melted snow
Snowfall40 inper year; 56 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 26 °F, low 10 °F 26°10° JanFebruary: average high 31 °F, low 14 °F 31°14° FebMarch: average high 43 °F, low 25 °F 43°25° MarApril: average high 57 °F, low 35 °F 57°35° AprMay: average high 69 °F, low 47 °F 69°47° MayJune: average high 78 °F, low 58 °F 78°58° JunJuly: average high 82 °F, low 62 °F 82°62° JulAugust: average high 80 °F, low 60 °F 80°60° AugSeptember: average high 73 °F, low 51 °F 73°51° SepOctober: average high 60 °F, low 39 °F 60°39° OctNovember: average high 45 °F, low 28 °F 45°28° NovDecember: average high 32 °F, low 17 °F 32°17° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″6″January: 1.26 in precipitation, 10 in snowfall 1.3❄10 JanFebruary: 1.55 in precipitation, 11.5 in snowfall 1.6❄12 FebMarch: 2.10 in precipitation, 4.7 in snowfall 2.1❄5 MarApril: 3.69 in precipitation, 1.1 in snowfall 3.7❄1 AprMay: 4.61 in precipitation 4.6 MayJune: 5.22 in precipitation 5.2 JunJuly: 4.78 in precipitation 4.8 JulAugust: 3.62 in precipitation 3.6 AugSeptember: 3.90 in precipitation 3.9 SepOctober: 2.99 in precipitation, 0.5 in snowfall 3.0❄1 OctNovember: 2.18 in precipitation, 1.7 in snowfall 2.2❄2 NovDecember: 1.69 in precipitation, 10.1 in snowfall 1.7❄10 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Platteville, WI (9 mi away); precipitation: Cuba City, WI (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 5a.

538115a
Hazel Green, WI · 6 mi
538085a
Dickeyville, WI · 6 mi
538125a
Kieler, WI · 7 mi
538035a
Benton, WI · 7 mi
538245a
Sinsinawa, WI · 7 mi
538185a
Platteville, WI · 9 mi
610255a
East Dubuque, IL · 11 mi
535105a
Belmont, WI · 12 mi

Wisconsin planting zones →

Questions about 53807

What planting zone is ZIP code 53807?

ZIP code 53807 (Cuba City, 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 Cuba City, WI?

The median last spring frost (32 °F) near 53807 is April 30; after May 13 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Platteville station.

When is the first frost in Cuba City, WI?

The median first fall frost near 53807 is October 13, giving a median frost-free growing season of 166 days.

When should I plant tomatoes in 53807?

Start tomato seeds indoors around Mar 5 – Mar 19 and set transplants outside around May 7 – May 21, one to three weeks after the median last frost.

How much rain and snow does 53807 get?

About 37.6 inches of precipitation a year and 40 inches of snowfall (NOAA 1991–2020 normals, Cuba City station).

How hot do summers get in Cuba City, WI?

The average high peaks at 82 °F in July, with about 6 days a year at 90 °F or more.

What kind of soil does 53807 have?

The USDA soil survey maps Tama at the center of ZIP 53807: silt loam, well drained, pH about 6.2 (slightly acidic).

Did spring come early in Cuba City, WI in 2026?

Spring leaf-out near 53807 came on Mar 28 in 2026, 15 days earlier than the 1991–2020 average (Apr 12), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Cuba City, WI?

Long-day onions: the longest day near 53807 is 15 h 19 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).