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

Planting zone for 58441 — Fullerton, ND

ZIP code 58441 (Fullerton, Dickey County) is in USDA zone 4b: the coldest winter night averages −25 to −20 °F. The median last spring frost is May 9 and the first fall frost September 28.

Where ZIP 58441 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 9
First frostSep 28
2012 zone4a

Was 4a 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 4b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Fullerton, 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 Fullerton, ND

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 9median — 50% chance of a later frost
Safe for tender plantsMay 23only 10% chance of frost after
First fall frostSeptember 28median — 10% chance by Sep 17
Growing season141 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 30 and returns around October 5.

From the NOAA station Fullerton 1 Ese, ND — 2 miles away, elevation 1,434 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 58441

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 28 – Apr 11
SpinachSow outdoors · Mar 28 – Apr 18
Broccoli, cabbageStart indoors · Feb 28 – Mar 14
Broccoli, cabbageTransplant · Apr 18 – May 2
Onion setsPlant outdoors · Apr 11 – Apr 25
PotatoesPlant outdoors · Apr 18 – May 2
LettuceSow outdoors · Apr 11 – Apr 25
Carrots, beetsSow outdoors · Apr 18 – May 2
TomatoesStart indoors · Mar 14 – Mar 28
TomatoesTransplant · May 16 – May 30
Peppers, eggplantStart indoors · Feb 28 – Mar 14
Peppers, eggplantTransplant · May 23 – Jun 6
BeansSow outdoors · May 16 – May 30
Sweet cornSow outdoors · May 16 – May 30
Cucumbers, squashSow outdoors · May 16 – May 30
Fall lettuce, spinachSow outdoors · Aug 3 – Aug 17
GarlicPlant cloves · Sep 14 – Oct 19
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 9) and first fall frost (Sep 28) 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 58441 came on Apr 18 — about the same time as the 1991–2020 average (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 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 Fullerton, ND.

Soil in Fullerton, ND

The soil mapped at the center of ZIP 58441 is Hamerly — loam, somewhat poorly drained.

TextureLoama good balance for most vegetables
pH7.5slightly alkaline; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter4%moderate
Hydrologic groupCwater soaks in slowly
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Hamerly-Tonka-Parnell 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 58441; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Fullerton, ND

Summer high82 °Faverage high, July
Winter low2 °Faverage low, January
Hot days8days a year at 90 °F or more
Freezing nights178nights a year at 32 °F or less
Growing degree days2,337base 50 °F — the season’s usable heat
Longest day15 h 47 mindaylight on June 21
Shortest day8 h 37 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation24.3 inper year, rain and melted snow
Snowfall37 inper year

Average high and low, by month

−10°0°10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 22 °F, low 2 °F 22°2° JanFebruary: average high 28 °F, low 6 °F 28°6° FebMarch: average high 40 °F, low 19 °F 40°19° MarApril: average high 55 °F, low 31 °F 55°31° AprMay: average high 68 °F, low 44 °F 68°44° MayJune: average high 77 °F, low 55 °F 77°55° JunJuly: average high 82 °F, low 59 °F 82°59° JulAugust: average high 81 °F, low 56 °F 81°56° AugSeptember: average high 72 °F, low 48 °F 72°48° SepOctober: average high 56 °F, low 34 °F 56°34° OctNovember: average high 39 °F, low 21 °F 39°21° NovDecember: average high 26 °F, low 8 °F 26°8° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 0.62 in precipitation, 7.2 in snowfall 0.6❄7 JanFebruary: 0.66 in precipitation, 6 in snowfall 0.7❄6 FebMarch: 1.17 in precipitation, 6.9 in snowfall 1.2❄7 MarApril: 1.78 in precipitation, 3.7 in snowfall 1.8❄4 AprMay: 3.54 in precipitation 3.5 MayJune: 4.07 in precipitation 4.1 JunJuly: 3.62 in precipitation 3.6 JulAugust: 2.62 in precipitation 2.6 AugSeptember: 2.49 in precipitation 2.5 SepOctober: 2.05 in precipitation, 1.6 in snowfall 2.0❄2 OctNovember: 0.77 in precipitation, 4.2 in snowfall 0.8❄4 NovDecember: 0.86 in precipitation, 7.3 in snowfall 0.9❄7 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Fullerton 1 Ese, ND (2 mi away); precipitation: Fullerton 1 Ese, ND (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

584744a
Oakes, ND · 12 mi
584364b
Ellendale, ND · 12 mi
584584b
Lamoure, ND · 14 mi
584154b
Berlin, ND · 14 mi
584904a
Verona, ND · 20 mi
584334b
Edgeley, ND · 21 mi
574464a
Hecla, SD · 23 mi
584314b
Dickey, ND · 24 mi

North Dakota planting zones →

Questions about 58441

What planting zone is ZIP code 58441?

ZIP code 58441 (Fullerton, 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 Fullerton, ND?

The median last spring frost (32 °F) near 58441 is May 9; after May 23 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Fullerton 1 Ese station.

When is the first frost in Fullerton, ND?

The median first fall frost near 58441 is September 28, giving a median frost-free growing season of 141 days.

When should I plant tomatoes in 58441?

Start tomato seeds indoors around Mar 14 – Mar 28 and set transplants outside around May 16 – May 30, one to three weeks after the median last frost.

How much rain and snow does 58441 get?

About 24.3 inches of precipitation a year and 37 inches of snowfall (NOAA 1991–2020 normals, Fullerton 1 Ese station).

How hot do summers get in Fullerton, ND?

The average high peaks at 82 °F in July, with about 8 days a year at 90 °F or more.

What kind of soil does 58441 have?

The USDA soil survey maps Hamerly at the center of ZIP 58441: loam, somewhat poorly drained, pH about 7.5 (slightly alkaline).

Did spring come early in Fullerton, ND in 2026?

Spring leaf-out near 58441 came on Apr 18 in 2026, about the same as the 1991–2020 average (Apr 20), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Fullerton, ND?

Long-day onions: the longest day near 58441 is 15 h 47 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 58441 change?

Yes. The 2012 USDA map put 58441 in zone 4a; the 2023 map puts it in zone 4b. The newer map uses 1991–2020 data and more weather stations.