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

Planting zone for 67851 — Holcomb, KS

ZIP code 67851 (Holcomb, Finney County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is April 28 and the first fall frost October 17.

Where ZIP 67851 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.

Zone6a−10 to −5 °F

Coldest night−23.3 to −20.6 °C

Last frostApr 28

First frostOct 17

2012 zone6a

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 6a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Holcomb, KS…

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 Holcomb, KS

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostApril 28median — 50% chance of a later frost

Safe for tender plantsMay 9only 10% chance of frost after

First fall frostOctober 17median — 10% chance by Oct 1

Growing season171 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 17 and returns around October 25.

From the NOAA station Garden City Exp Stn, KS — 13 miles away, elevation 2,891 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 67851

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Mar 17 – Mar 31

SpinachSow outdoors · Mar 17 – Apr 7

Broccoli, cabbageStart indoors · Feb 17 – Mar 3

Broccoli, cabbageTransplant · Apr 7 – Apr 21

Onion setsPlant outdoors · Mar 31 – Apr 14

PotatoesPlant outdoors · Apr 7 – Apr 21

LettuceSow outdoors · Mar 31 – Apr 14

Carrots, beetsSow outdoors · Apr 7 – Apr 21

TomatoesStart indoors · Mar 3 – Mar 17

TomatoesTransplant · May 5 – May 19

Peppers, eggplantStart indoors · Feb 17 – Mar 3

Peppers, eggplantTransplant · May 12 – May 26

BeansSow outdoors · May 5 – May 19

Sweet cornSow outdoors · May 5 – May 19

Cucumbers, squashSow outdoors · May 5 – May 19

Fall lettuce, spinachSow outdoors · Aug 22 – Sep 5

GarlicPlant cloves · Oct 3 – Nov 7

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 28) and first fall frost (Oct 17) 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 67851 came on Feb 23 — 20 days earlier than the 1991–2020 average (Mar 15).

average
Mar 152026
Feb 23

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 6a in Kansas

425 plants native to the lower 48 states, recorded in Kansas, and rated by the USDA to survive −10 °F or colder — the bottom of zone 6a. 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 Holcomb, KS.

Soil in Holcomb, KS

The soil mapped at the center of ZIP 67851 is Ulysses — silt loam, well drained.

TextureSilt loama good balance for most vegetables

pH7.5slightly alkaline; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter1.8%low — add compost

Hydrologic groupCwater soaks in slowly

Farmland classPrime farmland if irrigatedUSDA classification

Map unit: Ulysses silt loam, 0 to 1 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 67851; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Holcomb, KS

Summer high93 °Faverage high, July

Winter low17 °Faverage low, January

Hot days74days a year at 90 °F or more

Freezing nights148nights a year at 32 °F or less

Growing degree days3,934base 50 °F — the season’s usable heat

Longest day14 h 49 mindaylight on June 21

Shortest day9 h 31 mindaylight on December 21

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

Precipitation19.2 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: Garden City Exp Stn, KS (13 mi away); precipitation: Deerfield 0.6 Ne, KS (9 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.

678386a

Deerfield, KS · 7 mi

678466b

Garden City, KS · 14 mi

678606a

Lakin, KS · 16 mi

678686b

Pierceville, KS · 25 mi

678716a

Scott City, KS · 28 mi

Kansas planting zones →

Questions about 67851

What planting zone is ZIP code 67851?

ZIP code 67851 (Holcomb, KS) is in USDA hardiness zone 6a on the 2023 map: the coldest night of an average winter reaches −10 to −5 °F (−23.3 to −20.6 °C).

When is the last frost in Holcomb, KS?

The median last spring frost (32 °F) near 67851 is April 28; after May 9 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Garden City Exp Stn station.

When is the first frost in Holcomb, KS?

The median first fall frost near 67851 is October 17, giving a median frost-free growing season of 171 days.

When should I plant tomatoes in 67851?

Start tomato seeds indoors around Mar 3 – Mar 17 and set transplants outside around May 5 – May 19, one to three weeks after the median last frost.

How much rain and snow does 67851 get?

About 19.2 inches of precipitation a year (NOAA 1991–2020 normals, Deerfield 0.6 Ne station).

How hot do summers get in Holcomb, KS?

The average high peaks at 93 °F in July, with about 74 days a year at 90 °F or more.

What kind of soil does 67851 have?

The USDA soil survey maps Ulysses at the center of ZIP 67851: silt loam, well drained, pH about 7.5 (slightly alkaline).

Did spring come early in Holcomb, KS in 2026?

Spring leaf-out near 67851 came on Feb 23 in 2026, 20 days earlier than the 1991–2020 average (Mar 15), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Holcomb, KS?

Intermediate onions: the longest day near 67851 is 14 h 49 min, so day-neutral types bulb best; long-day varieties may not bulb fully.