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

Planting zone for 58746 — Kenmare, ND

ZIP code 58746 (Kenmare, Ward County) is in USDA zone 4a: the coldest winter night averages −30 to −25 °F. The median last spring frost is May 15 and the first fall frost September 23.

Where ZIP 58746 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 15
First frostSep 23
2012 zone3b

Was 3b on the 2012 map — half a zone warmer now. 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 Kenmare, 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 Kenmare, ND

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 15median — 50% chance of a later frost
Safe for tender plantsMay 28only 10% chance of frost after
First fall frostSeptember 23median — 10% chance by Sep 10
Growing season129 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 5 and returns around October 1.

From the NOAA station Kenmare 1 Wsw, ND — 3 miles away, elevation 1,811 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 58746

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Apr 3 – Apr 17
SpinachSow outdoors · Apr 3 – Apr 24
Broccoli, cabbageStart indoors · Mar 6 – Mar 20
Broccoli, cabbageTransplant · Apr 24 – May 8
Onion setsPlant outdoors · Apr 17 – May 1
PotatoesPlant outdoors · Apr 24 – May 8
LettuceSow outdoors · Apr 17 – May 1
Carrots, beetsSow outdoors · Apr 24 – May 8
TomatoesStart indoors · Mar 20 – Apr 3
TomatoesTransplant · May 22 – Jun 5
Peppers, eggplantStart indoors · Mar 6 – Mar 20
Peppers, eggplantTransplant · May 29 – Jun 12
BeansSow outdoors · May 22 – Jun 5
Sweet cornSow outdoors · May 22 – Jun 5
Cucumbers, squashSow outdoors · May 22 – Jun 5
Fall lettuce, spinachSow outdoors · Jul 29 – Aug 12
GarlicPlant cloves · Sep 9 – Oct 14
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 15) and first fall frost (Sep 23) 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 58746 came on Apr 28 — 4 days later than the 1991–2020 average (Apr 24).

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 Kenmare, ND.

Soil in Kenmare, ND

The soil mapped at the center of ZIP 58746 is Hamlet — loam, moderately well drained.

TextureLoama good balance for most vegetables
pH7.0neutral; most vegetables like 6.0–7.0
DrainageModerately well drainednatural drainage class
Organic matter5%high
Hydrologic groupCwater soaks in slowly
Farmland classPrime farmland if drainedUSDA classification

Map unit: Hamlet-Souris-Tonka complex, 0 to 3 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 58746; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Kenmare, ND

Summer high80 °Faverage high, July
Winter low0 °Faverage low, January
Hot days10days a year at 90 °F or more
Freezing nights193nights a year at 32 °F or less
Growing degree days1,897base 50 °F — the season’s usable heat
Longest day16 h 09 mindaylight on June 21
Shortest day8 h 16 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation19.5 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 19 °F, low 0 °F 19°0° JanFebruary: average high 23 °F, low 4 °F 23°4° FebMarch: average high 36 °F, low 15 °F 36°15° MarApril: average high 52 °F, low 28 °F 52°28° AprMay: average high 65 °F, low 41 °F 65°41° MayJune: average high 74 °F, low 51 °F 74°51° JunJuly: average high 80 °F, low 56 °F 80°56° JulAugust: average high 80 °F, low 53 °F 80°53° AugSeptember: average high 69 °F, low 43 °F 69°43° SepOctober: average high 52 °F, low 31 °F 52°31° OctNovember: average high 35 °F, low 17 °F 35°17° NovDecember: average high 23 °F, low 6 °F 23°6° Dec

Precipitation by month inches

0″1″2″3″4″January: 1.00 in precipitation 1.0 JanFebruary: 0.73 in precipitation 0.7 FebMarch: 0.89 in precipitation 0.9 MarApril: 0.96 in precipitation 1.0 AprMay: 2.50 in precipitation 2.5 MayJune: 3.38 in precipitation 3.4 JunJuly: 2.99 in precipitation 3.0 JulAugust: 2.19 in precipitation 2.2 AugSeptember: 1.92 in precipitation 1.9 SepOctober: 1.25 in precipitation 1.3 OctNovember: 0.79 in precipitation 0.8 NovDecember: 0.89 in precipitation 0.9 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Kenmare 1 Wsw, ND (3 mi away); precipitation: Kenmare 1 Wsw, ND (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

587214a
Bowbells, ND · 10 mi
587874a
Tolley, ND · 13 mi
587344a
Donnybrook, ND · 15 mi
587373b
Flaxton, ND · 19 mi
587823b
Sherwood, ND · 24 mi
587524a
Lignite, ND · 24 mi
587254a
Carpio, ND · 25 mi
587614a
Mohall, ND · 26 mi

North Dakota planting zones →

Questions about 58746

What planting zone is ZIP code 58746?

ZIP code 58746 (Kenmare, 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 Kenmare, ND?

The median last spring frost (32 °F) near 58746 is May 15; after May 28 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Kenmare 1 Wsw station.

When is the first frost in Kenmare, ND?

The median first fall frost near 58746 is September 23, giving a median frost-free growing season of 129 days.

When should I plant tomatoes in 58746?

Start tomato seeds indoors around Mar 20 – Apr 3 and set transplants outside around May 22 – Jun 5, one to three weeks after the median last frost.

How much rain and snow does 58746 get?

About 19.5 inches of precipitation a year (NOAA 1991–2020 normals, Kenmare 1 Wsw station).

How hot do summers get in Kenmare, ND?

The average high peaks at 80 °F in July, with about 10 days a year at 90 °F or more.

What kind of soil does 58746 have?

The USDA soil survey maps Hamlet at the center of ZIP 58746: loam, moderately well drained, pH about 7.0 (neutral).

Did spring come early in Kenmare, ND in 2026?

Spring leaf-out near 58746 came on Apr 28 in 2026, 4 days later than the 1991–2020 average (Apr 24), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Kenmare, ND?

Long-day onions: the longest day near 58746 is 16 h 09 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 58746 change?

Yes. The 2012 USDA map put 58746 in zone 3b; the 2023 map puts it in zone 4a. The newer map uses 1991–2020 data and more weather stations.