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

Planting zone for 74945 — Marble City, OK

ZIP code 74945 (Marble City, Sequoyah County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is March 30 and the first fall frost November 7.

Where ZIP 74945 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.

Zone7b5 to 10 °F

Coldest night−15 to −12.2 °C

Last frostMar 30

First frostNov 7

2012 zone7b

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 7b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Marble City, OK…

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 Marble City, OK

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 30median — 50% chance of a later frost

Safe for tender plantsApril 16only 10% chance of frost after

First fall frostNovember 7median — 10% chance by Oct 23

Growing season223 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 15 and returns around November 20.

From the NOAA station Sallisaw 2 Nw, OK — 9 miles away, elevation 659 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 74945

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 16 – Mar 2

SpinachSow outdoors · Feb 16 – Mar 9

Broccoli, cabbageStart indoors · Jan 19 – Feb 2

Broccoli, cabbageTransplant · Mar 9 – Mar 23

Onion setsPlant outdoors · Mar 2 – Mar 16

PotatoesPlant outdoors · Mar 9 – Mar 23

LettuceSow outdoors · Mar 2 – Mar 16

Carrots, beetsSow outdoors · Mar 9 – Mar 23

TomatoesStart indoors · Feb 2 – Feb 16

TomatoesTransplant · Apr 6 – Apr 20

Peppers, eggplantStart indoors · Jan 19 – Feb 2

Peppers, eggplantTransplant · Apr 13 – Apr 27

BeansSow outdoors · Apr 6 – Apr 20

Sweet cornSow outdoors · Apr 6 – Apr 20

Cucumbers, squashSow outdoors · Apr 6 – Apr 20

Fall lettuce, spinachSow outdoors · Sep 12 – Sep 26

GarlicPlant cloves · Oct 24 – Nov 28

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 30) and first fall frost (Nov 7) 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 74945 came on Feb 12 — 12 days earlier than the 1991–2020 average (Feb 24).

average
Feb 242026
Feb 12

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 7b in Oklahoma

518 plants native to the lower 48 states, recorded in Oklahoma, and rated by the USDA to survive 5 °F or colder — the bottom of zone 7b. 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 Marble City, OK.

Soil in Marble City, OK

The soil mapped at the center of ZIP 74945 is Hector — stony fine sandy loam, well drained.

TextureStony fine sandy loamdrains and warms fast; dries out and needs more feeding

pH5.8moderately acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter2%moderate

Hydrologic groupDwater soaks in very slowly

Farmland classNot prime farmlandUSDA classification

Map unit: Hector-Linker-Enders complex, 5 to 40 percent slopes, extremely stony.

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 74945; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Marble City, OK

Summer high91 °Faverage high, July

Winter low28 °Faverage low, January

Hot days61days a year at 90 °F or more

Freezing nights67nights a year at 32 °F or less

Growing degree days4,968base 50 °F — the season’s usable heat

Longest day14 h 34 mindaylight on June 21

Shortest day9 h 45 mindaylight on December 21

Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully

Precipitation50.4 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: Sallisaw 2 Nw, OK (9 mi away); precipitation: Vian 5.3 Ene, OK (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7b.

Park Hill, OK · 15 mi

Oklahoma planting zones →

Questions about 74945

What planting zone is ZIP code 74945?

ZIP code 74945 (Marble City, OK) is in USDA hardiness zone 7b on the 2023 map: the coldest night of an average winter reaches 5 to 10 °F (−15 to −12.2 °C).

When is the last frost in Marble City, OK?

The median last spring frost (32 °F) near 74945 is March 30; after April 16 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Sallisaw 2 Nw station.

When is the first frost in Marble City, OK?

The median first fall frost near 74945 is November 7, giving a median frost-free growing season of 223 days.

When should I plant tomatoes in 74945?

Start tomato seeds indoors around Feb 2 – Feb 16 and set transplants outside around Apr 6 – Apr 20, one to three weeks after the median last frost.

How much rain and snow does 74945 get?

About 50.4 inches of precipitation a year (NOAA 1991–2020 normals, Vian 5.3 Ene station).

How hot do summers get in Marble City, OK?

The average high peaks at 91 °F in July, with about 61 days a year at 90 °F or more.

What kind of soil does 74945 have?

The USDA soil survey maps Hector at the center of ZIP 74945: stony fine sandy loam, well drained, pH about 5.8 (moderately acidic).

Did spring come early in Marble City, OK in 2026?

Spring leaf-out near 74945 came on Feb 12 in 2026, 12 days earlier than the 1991–2020 average (Feb 24), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Marble City, OK?

Intermediate onions: the longest day near 74945 is 14 h 34 min, so day-neutral types bulb best; long-day varieties may not bulb fully.