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

Planting zone for 59464 — Moore, MT

ZIP code 59464 (Moore, Fergus County) is in USDA zone 4b: the coldest winter night averages −25 to −20 °F. The median last spring frost is May 31 and the first fall frost September 14.

Where ZIP 59464 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 31

First frostSep 14

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 Moore, MT…

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 Moore, MT

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMay 31median — 50% chance of a later frost

Safe for tender plantsJune 18only 10% chance of frost after

First fall frostSeptember 14median — 10% chance by Aug 30

Growing season105 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 15 and returns around September 26.

From the NOAA station Lewistown 11 Sse, MT — 11 miles away, elevation 4,964 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 59464

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 19 – May 3

SpinachSow outdoors · Apr 19 – May 10

Broccoli, cabbageStart indoors · Mar 22 – Apr 5

Broccoli, cabbageTransplant · May 10 – May 24

Onion setsPlant outdoors · May 3 – May 17

PotatoesPlant outdoors · May 10 – May 24

LettuceSow outdoors · May 3 – May 17

Carrots, beetsSow outdoors · May 10 – May 24

TomatoesStart indoors · Apr 5 – Apr 19

TomatoesTransplant · Jun 7 – Jun 21

Peppers, eggplantStart indoors · Mar 22 – Apr 5

Peppers, eggplantTransplant · Jun 14 – Jun 28

BeansSow outdoors · Jun 7 – Jun 21

Sweet cornSow outdoors · Jun 7 – Jun 21

Cucumbers, squashSow outdoors · Jun 7 – Jun 21

Fall lettuce, spinachSow outdoors · Jul 20 – Aug 3

GarlicPlant cloves · Aug 31 – Oct 5

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 31) and first fall frost (Sep 14) 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 59464 came on Apr 13 — 11 days earlier than the 1991–2020 average (Apr 24).

average
Apr 242026
Apr 13

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 Montana

506 plants native to the lower 48 states, recorded in Montana, and rated by the USDA to survive −25 °F or colder — the bottom of zone 4b. 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 Moore, MT.

Soil in Moore, MT

The soil mapped at the center of ZIP 59464 is Burnette — silty clay loam, well drained.

TextureSilty clay loamholds water and nutrients; slow to drain and warm up

pH6.5neutral; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter4.5%moderate

Hydrologic groupCwater soaks in slowly

Farmland classNot prime farmlandUSDA classification

Map unit: Burnette-Burnette variant silty clay loams, 8 to 15 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 59464; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Moore, MT

Summer high80 °Faverage high, July

Winter low12 °Faverage low, February

Hot days5days a year at 90 °F or more

Freezing nights205nights a year at 32 °F or less

Growing degree days1,366base 50 °F — the season’s usable heat

Longest day15 h 52 mindaylight on June 21

Shortest day8 h 32 mindaylight on December 21

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

Precipitation41.8 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Lewistown 11 Sse, MT (11 mi away); precipitation: Crystal Lake, MT (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 4b.

594184b

Buffalo, MT · 12 mi

594534b

Judith Gap, MT · 14 mi

Lewistown, MT · 25 mi

594414b

Forest Grove, MT · 26 mi

590364b

Harlowton, MT · 29 mi

590784b

Shawmut, MT · 29 mi

Montana planting zones →

Questions about 59464

What planting zone is ZIP code 59464?

ZIP code 59464 (Moore, MT) 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 Moore, MT?

The median last spring frost (32 °F) near 59464 is May 31; after June 18 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Lewistown 11 Sse station.

When is the first frost in Moore, MT?

The median first fall frost near 59464 is September 14, giving a median frost-free growing season of 105 days.

When should I plant tomatoes in 59464?

Start tomato seeds indoors around Apr 5 – Apr 19 and set transplants outside around Jun 7 – Jun 21, one to three weeks after the median last frost.

How much rain and snow does 59464 get?

About 41.8 inches of precipitation a year (NOAA 1991–2020 normals, Crystal Lake station).

How hot do summers get in Moore, MT?

The average high peaks at 80 °F in July, with about 5 days a year at 90 °F or more.

What kind of soil does 59464 have?

The USDA soil survey maps Burnette at the center of ZIP 59464: silty clay loam, well drained, pH about 6.5 (neutral).

Did spring come early in Moore, MT in 2026?

Spring leaf-out near 59464 came on Apr 13 in 2026, 11 days earlier than the 1991–2020 average (Apr 24), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Moore, MT?

Long-day onions: the longest day near 59464 is 15 h 52 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).