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

Planting zone for 58351 — Minnewaukan, ND

ZIP code 58351 (Minnewaukan, Benson County) is in USDA zone 4a: the coldest winter night averages −30 to −25 °F. The median last spring frost is May 12 and the first fall frost September 29.

Where ZIP 58351 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 12
First frostSep 29
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 Minnewaukan, 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 Minnewaukan, ND

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 12median — 50% chance of a later frost
Safe for tender plantsMay 25only 10% chance of frost after
First fall frostSeptember 29median — 10% chance by Sep 17
Growing season138 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 4 and returns around October 8.

From the NOAA station Minnewaukan, ND — 2 miles away, elevation 1,470 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 58351

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 31 – Apr 14
SpinachSow outdoors · Mar 31 – Apr 21
Broccoli, cabbageStart indoors · Mar 3 – Mar 17
Broccoli, cabbageTransplant · Apr 21 – May 5
Onion setsPlant outdoors · Apr 14 – Apr 28
PotatoesPlant outdoors · Apr 21 – May 5
LettuceSow outdoors · Apr 14 – Apr 28
Carrots, beetsSow outdoors · Apr 21 – May 5
TomatoesStart indoors · Mar 17 – Mar 31
TomatoesTransplant · May 19 – Jun 2
Peppers, eggplantStart indoors · Mar 3 – Mar 17
Peppers, eggplantTransplant · May 26 – Jun 9
BeansSow outdoors · May 19 – Jun 2
Sweet cornSow outdoors · May 19 – Jun 2
Cucumbers, squashSow outdoors · May 19 – Jun 2
Fall lettuce, spinachSow outdoors · Aug 4 – Aug 18
GarlicPlant cloves · Sep 15 – Oct 20
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 12) and first fall frost (Sep 29) 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 58351 came on May 2 — 6 days later than the 1991–2020 average (Apr 26).

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.

Trees 21

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °Fbalsam poplar80 ft · blooms late spring · high shade tolerance · to −79 °Fbigtooth aspen65 ft · blooms mid spring · high shade tolerance · to −43 °Fblack ash65 ft · blooms early spring · high shade tolerance · to −47 °Fblack locust60 ft · blooms spring · high shade tolerance · to −37 °F

Shrubs 56

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °FAmerican black currant3 ft · blooms early spring · to −46 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican plum24 ft · blooms mid spring · high shade tolerance · to −38 °Fbeaked hazelnut15 ft · blooms early spring · low shade tolerance · to −47 °Fbig sagebrush4 ft · blooms mid summer · high shade tolerance · to −43 °F

Wildflowers & perennials 146

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine sweetvetch2 ft · blooms early summer · high shade tolerance · to −62 °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 speedwell0.8 ft · blooms mid summer · low shade tolerance · to −38 °F

Grasses 110

alkali cordgrass3 ft · blooms late summer · high shade tolerance · to −38 °Falkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °Fanalogue sedge1.5 ft · blooms late spring · medium shade tolerance · to −38 °Farctic brome3 ft · blooms early summer · low shade tolerance · to −33 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °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 °Fwestern white clematis1 ft · blooms mid summer · medium shade tolerance · to −38 °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 Minnewaukan, ND.

Soil in Minnewaukan, ND

The soil mapped at the center of ZIP 58351 is La Prairie — loam, moderately well drained.

TextureLoama good balance for most vegetables
pH7.2neutral; most vegetables like 6.0–7.0
DrainageModerately well drainednatural drainage class
Organic matter5%high
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: La Prairie-Fluvaquents, channeled complex, 0 to 2 percent slopes, frequently flooded.

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 58351; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Minnewaukan, ND

Summer high79 °Faverage high, July
Winter low−1 °Faverage low, January
Hot days6days a year at 90 °F or more
Freezing nights191nights a year at 32 °F or less
Growing degree days1,992base 50 °F — the season’s usable heat
Longest day16 h 04 mindaylight on June 21
Shortest day8 h 21 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation19.7 inper year, rain and melted snow

Average high and low, by month

−10°0°10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 16 °F, low -1 °F 16°−1° JanFebruary: average high 21 °F, low 2 °F 21°2° FebMarch: average high 33 °F, low 14 °F 33°14° MarApril: average high 50 °F, low 28 °F 50°28° AprMay: average high 65 °F, low 41 °F 65°41° MayJune: average high 74 °F, low 54 °F 74°54° JunJuly: average high 79 °F, low 58 °F 79°58° JulAugust: average high 79 °F, low 55 °F 79°55° AugSeptember: average high 70 °F, low 45 °F 70°45° SepOctober: average high 54 °F, low 32 °F 54°32° OctNovember: average high 35 °F, low 18 °F 35°18° NovDecember: average high 22 °F, low 5 °F 22°5° Dec

Precipitation by month inches

0″1″2″3″4″January: 0.44 in precipitation 0.4 JanFebruary: 0.33 in precipitation 0.3 FebMarch: 0.74 in precipitation 0.7 MarApril: 1.32 in precipitation 1.3 AprMay: 3.06 in precipitation 3.1 MayJune: 3.62 in precipitation 3.6 JunJuly: 3.03 in precipitation 3.0 JulAugust: 2.03 in precipitation 2.0 AugSeptember: 2.02 in precipitation 2.0 SepOctober: 1.40 in precipitation 1.4 OctNovember: 1.00 in precipitation 1.0 NovDecember: 0.67 in precipitation 0.7 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Minnewaukan, ND (2 mi away); precipitation: Minnewaukan, ND (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 4a.

583574a
Oberon, ND · 12 mi
583484a
Maddock, ND · 14 mi
583464a
Leeds, ND · 14 mi
583624a
Penn, ND · 15 mi
583254a
Churchs Ferry, ND · 16 mi
583354a
Fort Totten, ND · 16 mi
583864a
York, ND · 20 mi
583744a
Sheyenne, ND · 21 mi

North Dakota planting zones →

Questions about 58351

What planting zone is ZIP code 58351?

ZIP code 58351 (Minnewaukan, 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 Minnewaukan, ND?

The median last spring frost (32 °F) near 58351 is May 12; after May 25 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Minnewaukan station.

When is the first frost in Minnewaukan, ND?

The median first fall frost near 58351 is September 29, giving a median frost-free growing season of 138 days.

When should I plant tomatoes in 58351?

Start tomato seeds indoors around Mar 17 – Mar 31 and set transplants outside around May 19 – Jun 2, one to three weeks after the median last frost.

How much rain and snow does 58351 get?

About 19.7 inches of precipitation a year (NOAA 1991–2020 normals, Minnewaukan station).

How hot do summers get in Minnewaukan, ND?

The average high peaks at 79 °F in July, with about 6 days a year at 90 °F or more.

What kind of soil does 58351 have?

The USDA soil survey maps La Prairie at the center of ZIP 58351: loam, moderately well drained, pH about 7.2 (neutral).

Did spring come early in Minnewaukan, ND in 2026?

Spring leaf-out near 58351 came on May 2 in 2026, 6 days later than the 1991–2020 average (Apr 26), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Minnewaukan, ND?

Long-day onions: the longest day near 58351 is 16 h 04 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).