Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 58642 — Manning, ND

ZIP code 58642 (Manning, Dunn County) is in USDA zone 4a: the coldest winter night averages −30 to −25 °F. The median last spring frost is May 18 and the first fall frost September 24.

Where ZIP 58642 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.

Zone4a−30 to −25 °F

Coldest night−34.4 to −31.7 °C

Last frostMay 18

First frostSep 24

2012 zone4a

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 4a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Manning, ND…

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 Manning, ND

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostMay 18median — 50% chance of a later frost

Safe for tender plantsMay 31only 10% chance of frost after

First fall frostSeptember 24median — 10% chance by Sep 11

Growing season127 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 9 and returns around October 3.

From the NOAA station Dickinson Rch Hq, ND — within 1 mile, elevation 2,379 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 58642

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 6 – Apr 20

SpinachSow outdoors · Apr 6 – Apr 27

Broccoli, cabbageStart indoors · Mar 9 – Mar 23

Broccoli, cabbageTransplant · Apr 27 – May 11

Onion setsPlant outdoors · Apr 20 – May 4

PotatoesPlant outdoors · Apr 27 – May 11

LettuceSow outdoors · Apr 20 – May 4

Carrots, beetsSow outdoors · Apr 27 – May 11

TomatoesStart indoors · Mar 23 – Apr 6

TomatoesTransplant · May 25 – Jun 8

Peppers, eggplantStart indoors · Mar 9 – Mar 23

Peppers, eggplantTransplant · Jun 1 – Jun 15

BeansSow outdoors · May 25 – Jun 8

Sweet cornSow outdoors · May 25 – Jun 8

Cucumbers, squashSow outdoors · May 25 – Jun 8

Fall lettuce, spinachSow outdoors · Jul 30 – Aug 13

GarlicPlant cloves · Sep 10 – Oct 15

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 18) and first fall frost (Sep 24) 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 58642 came on Apr 20 — about the same time as the 1991–2020 average (Apr 18).

average
Apr 182026
Apr 20

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 4a in North Dakota

342 plants native to the lower 48 states, recorded in North Dakota, and rated by the USDA to survive −30 °F or colder — the bottom of zone 4a. Each links to its USDA PLANTS profile.

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 Manning, ND.

Soil in Manning, ND

The soil mapped at the center of ZIP 58642 is Amor — loam, well drained.

TextureLoama good balance for most vegetables

pH6.5neutral; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter3%moderate

Hydrologic groupCwater soaks in slowly

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Amor-Shambo loams, 3 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 58642; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Manning, ND

Summer high84 °Faverage high, July

Winter low4 °Faverage low, January

Hot days18days a year at 90 °F or more

Freezing nights190nights a year at 32 °F or less

Growing degree days2,088base 50 °F — the season’s usable heat

Longest day15 h 56 mindaylight on June 21

Shortest day8 h 29 mindaylight on December 21

Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)

Precipitation17.6 inper year, rain and melted snow

Snowfall44 inper year

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Dickinson Rch Hq, ND (within 1 mile); precipitation: Dickinson Rch Hq, ND (within 1 mile). 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.

586264a

Dunn Center, ND · 16 mi

586404a

Killdeer, ND · 18 mi

586014b

Dickinson, ND · 20 mi

586274a

Fairfield, ND · 21 mi

586024a

Dickinson, ND · 22 mi

586304a

Gladstone, ND · 23 mi

North Dakota planting zones →

Questions about 58642

What planting zone is ZIP code 58642?

ZIP code 58642 (Manning, ND) is in USDA hardiness zone 4a on the 2023 map: the coldest night of an average winter reaches −30 to −25 °F (−34.4 to −31.7 °C).

When is the last frost in Manning, ND?

The median last spring frost (32 °F) near 58642 is May 18; after May 31 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Dickinson Rch Hq station.

When is the first frost in Manning, ND?

The median first fall frost near 58642 is September 24, giving a median frost-free growing season of 127 days.

When should I plant tomatoes in 58642?

Start tomato seeds indoors around Mar 23 – Apr 6 and set transplants outside around May 25 – Jun 8, one to three weeks after the median last frost.

How much rain and snow does 58642 get?

About 17.6 inches of precipitation a year and 44 inches of snowfall (NOAA 1991–2020 normals, Dickinson Rch Hq station).

How hot do summers get in Manning, ND?

The average high peaks at 84 °F in July, with about 18 days a year at 90 °F or more.

What kind of soil does 58642 have?

The USDA soil survey maps Amor at the center of ZIP 58642: loam, well drained, pH about 6.5 (neutral).

Did spring come early in Manning, ND in 2026?

Spring leaf-out near 58642 came on Apr 20 in 2026, about the same as the 1991–2020 average (Apr 18), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Manning, ND?

Long-day onions: the longest day near 58642 is 15 h 56 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).