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

Planting zone for 58433 — Edgeley, ND

ZIP code 58433 (Edgeley, LaMoure County) is in USDA zone 4b: the coldest winter night averages −25 to −20 °F. The median last spring frost is May 7 and the first fall frost October 2.

Where ZIP 58433 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.

Zone4b−25 to −20 °F
Coldest night−31.7 to −28.9 °C
Last frostMay 7
First frostOct 2
2012 zone4b

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 4b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Edgeley, 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 Edgeley, ND

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 7median — 50% chance of a later frost
Safe for tender plantsMay 20only 10% chance of frost after
First fall frostOctober 2median — 10% chance by Sep 21
Growing season148 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 28 and returns around October 12.

From the NOAA station Edgeley 3wnw, ND — 2 miles away, elevation 1,624 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 58433

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 26 – Apr 9
SpinachSow outdoors · Mar 26 – Apr 16
Broccoli, cabbageStart indoors · Feb 26 – Mar 12
Broccoli, cabbageTransplant · Apr 16 – Apr 30
Onion setsPlant outdoors · Apr 9 – Apr 23
PotatoesPlant outdoors · Apr 16 – Apr 30
LettuceSow outdoors · Apr 9 – Apr 23
Carrots, beetsSow outdoors · Apr 16 – Apr 30
TomatoesStart indoors · Mar 12 – Mar 26
TomatoesTransplant · May 14 – May 28
Peppers, eggplantStart indoors · Feb 26 – Mar 12
Peppers, eggplantTransplant · May 21 – Jun 4
BeansSow outdoors · May 14 – May 28
Sweet cornSow outdoors · May 14 – May 28
Cucumbers, squashSow outdoors · May 14 – May 28
Fall lettuce, spinachSow outdoors · Aug 7 – Aug 21
GarlicPlant cloves · Sep 18 – Oct 23
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 7) and first fall frost (Oct 2) 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 58433 came on Apr 21 — about the same time as the 1991–2020 average (Apr 21).

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 4b in North Dakota

372 plants native to the lower 48 states, recorded in North Dakota, and rated by the USDA to survive −25 °F or colder — the bottom of zone 4b. Each links to its USDA PLANTS profile.

Trees 22

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 58

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 165

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 117

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 °Fbeaked spikerush3 ft · blooms late spring · high shade tolerance · to −28 °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 Edgeley, ND.

Soil in Edgeley, ND

The soil mapped at the center of ZIP 58433 is Svea — 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 matter5.5%high
Hydrologic groupBwater soaks in moderately
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Svea-Cresbard loams, 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 58433; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Edgeley, ND

Summer high81 °Faverage high, July
Winter low4 °Faverage low, January
Hot days8days a year at 90 °F or more
Freezing nights177nights a year at 32 °F or less
Growing degree days2,295base 50 °F — the season’s usable heat
Longest day15 h 48 mindaylight on June 21
Shortest day8 h 35 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation21.1 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 20 °F, low 4 °F 20°4° JanFebruary: average high 25 °F, low 7 °F 25°7° FebMarch: average high 37 °F, low 19 °F 37°19° MarApril: average high 53 °F, low 32 °F 53°32° AprMay: average high 67 °F, low 44 °F 67°44° MayJune: average high 76 °F, low 55 °F 76°55° JunJuly: average high 81 °F, low 59 °F 81°59° JulAugust: average high 80 °F, low 57 °F 80°57° AugSeptember: average high 71 °F, low 47 °F 71°47° SepOctober: average high 56 °F, low 35 °F 56°35° OctNovember: average high 39 °F, low 21 °F 39°21° NovDecember: average high 26 °F, low 10 °F 26°10° Dec

Precipitation by month inches

0″1″2″3″4″January: 0.61 in precipitation 0.6 JanFebruary: 0.41 in precipitation 0.4 FebMarch: 0.92 in precipitation 0.9 MarApril: 1.43 in precipitation 1.4 AprMay: 3.03 in precipitation 3.0 MayJune: 3.35 in precipitation 3.4 JunJuly: 3.28 in precipitation 3.3 JulAugust: 2.79 in precipitation 2.8 AugSeptember: 2.50 in precipitation 2.5 SepOctober: 1.71 in precipitation 1.7 OctNovember: 0.66 in precipitation 0.7 NovDecember: 0.46 in precipitation 0.5 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Edgeley 3wnw, ND (2 mi away); precipitation: Edgeley 3wnw, ND (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 4b.

584154b
Berlin, ND · 11 mi
584564b
Kulm, ND · 14 mi
584314b
Dickey, ND · 14 mi
584544b
Jud, ND · 19 mi
584724b
Montpelier, ND · 19 mi
584584b
Lamoure, ND · 20 mi
584364b
Ellendale, ND · 21 mi
584414b
Fullerton, ND · 21 mi

North Dakota planting zones →

Questions about 58433

What planting zone is ZIP code 58433?

ZIP code 58433 (Edgeley, ND) is in USDA hardiness zone 4b on the 2023 map: the coldest night of an average winter reaches −25 to −20 °F (−31.7 to −28.9 °C).

When is the last frost in Edgeley, ND?

The median last spring frost (32 °F) near 58433 is May 7; after May 20 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Edgeley 3wnw station.

When is the first frost in Edgeley, ND?

The median first fall frost near 58433 is October 2, giving a median frost-free growing season of 148 days.

When should I plant tomatoes in 58433?

Start tomato seeds indoors around Mar 12 – Mar 26 and set transplants outside around May 14 – May 28, one to three weeks after the median last frost.

How much rain and snow does 58433 get?

About 21.1 inches of precipitation a year (NOAA 1991–2020 normals, Edgeley 3wnw station).

How hot do summers get in Edgeley, ND?

The average high peaks at 81 °F in July, with about 8 days a year at 90 °F or more.

What kind of soil does 58433 have?

The USDA soil survey maps Svea at the center of ZIP 58433: loam, moderately well drained, pH about 7.0 (neutral).

Did spring come early in Edgeley, ND in 2026?

Spring leaf-out near 58433 came on Apr 21 in 2026, about the same as the 1991–2020 average (Apr 21), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Edgeley, ND?

Long-day onions: the longest day near 58433 is 15 h 48 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).