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

Planting zone for 80810 — Cheyenne Wells, CO

ZIP code 80810 (Cheyenne Wells, Cheyenne County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is May 1 and the first fall frost October 14.

Where ZIP 80810 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 frostMay 1
First frostOct 14
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 Cheyenne Wells, CO…

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 Cheyenne Wells, CO

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 1median — 50% chance of a later frost
Safe for tender plantsMay 17only 10% chance of frost after
First fall frostOctober 14median — 10% chance by Oct 1
Growing season165 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 22 and returns around October 22.

From the NOAA station Cheyenne Wells 2ne, CO — 6 miles away, elevation 4,203 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 80810

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 20 – Apr 3
SpinachSow outdoors · Mar 20 – Apr 10
Broccoli, cabbageStart indoors · Feb 20 – Mar 6
Broccoli, cabbageTransplant · Apr 10 – Apr 24
Onion setsPlant outdoors · Apr 3 – Apr 17
PotatoesPlant outdoors · Apr 10 – Apr 24
LettuceSow outdoors · Apr 3 – Apr 17
Carrots, beetsSow outdoors · Apr 10 – Apr 24
TomatoesStart indoors · Mar 6 – Mar 20
TomatoesTransplant · May 8 – May 22
Peppers, eggplantStart indoors · Feb 20 – Mar 6
Peppers, eggplantTransplant · May 15 – May 29
BeansSow outdoors · May 8 – May 22
Sweet cornSow outdoors · May 8 – May 22
Cucumbers, squashSow outdoors · May 8 – May 22
Fall lettuce, spinachSow outdoors · Aug 19 – Sep 2
GarlicPlant cloves · Sep 30 – Nov 4
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 1) and first fall frost (Oct 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 80810 came on Feb 26 — 21 days earlier than the 1991–2020 average (Mar 19).

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 Colorado

563 plants native to the lower 48 states, recorded in Colorado, and rated by the USDA to survive −10 °F or colder — the bottom of zone 6a. Each links to its USDA PLANTS profile.

Trees 28

American elm120 ft · blooms early spring · medium shade tolerance · to −46 °Fbalsam poplar80 ft · blooms late spring · high shade tolerance · to −79 °Fblack locust60 ft · blooms spring · high shade tolerance · to −37 °Fblack walnut100 ft · blooms late spring · high shade tolerance · to −28 °Fblack willow100 ft · blooms early spring · high shade tolerance · to −58 °Fblue spruce100 ft · blooms late spring · medium shade tolerance · to −38 °F

Shrubs 104

alderleaf mountain mahogany15 ft · blooms late spring · medium shade tolerance · to −41 °Falpine laurel1 ft · blooms late spring · low shade tolerance · to −28 °FAmerican black currant3 ft · blooms early spring · to −46 °FAmerican plum24 ft · blooms mid spring · high shade tolerance · to −38 °Fantelope bitterbrush6 ft · blooms early spring · medium shade tolerance · to −36 °FApache plume6 ft · blooms late spring · high shade tolerance · to −23 °F

Wildflowers & perennials 251

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine aster0.3 ft · blooms early summer · medium shade tolerance · to −28 °Falpine bistort1 ft · blooms mid spring · high shade tolerance · to −38 °Falpine mountainsorrel1 ft · blooms mid summer · medium shade tolerance · to −43 °FAmerican alpine speedwell1 ft · blooms summer · medium shade tolerance · to −28 °FAmerican bistort1.5 ft · blooms mid spring · high shade tolerance · to −38 °F

Grasses 167

Alaska oniongrass3 ft · blooms mid spring · low shade tolerance · to −33 °Falkali cordgrass3 ft · blooms late summer · high shade tolerance · to −38 °Falkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °FAlpine Meadow-Foxtail0.5 ft · blooms mid spring · medium shade tolerance · to −33 °Falpine timothy1.4 ft · blooms late spring · medium shade tolerance · to −43 °Fanalogue sedge1.5 ft · blooms late spring · medium shade tolerance · to −38 °F

Vines 4

riverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °Ftrumpet creeper2 ft · blooms summer · high shade tolerance · to −13 °FVirginia creeper1 ft · blooms late spring · medium shade tolerance · to −28 °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 Cheyenne Wells, CO.

Soil in Cheyenne Wells, CO

The soil mapped at the center of ZIP 80810 is Wiley — silt loam, well drained.

TextureSilt loama good balance for most vegetables
pH7.9alkaline; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter0.75%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Wiley complex, 3 to 5 percent slopes, eroded.

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 80810; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Cheyenne Wells, CO

Summer high91 °Faverage high, July
Winter low20 °Faverage low, January
Hot days62days a year at 90 °F or more
Freezing nights150nights a year at 32 °F or less
Growing degree days3,367base 50 °F — the season’s usable heat
Longest day14 h 53 mindaylight on June 21
Shortest day9 h 27 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation17.2 inper year, rain and melted snow

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 44 °F, low 20 °F 44°20° JanFebruary: average high 47 °F, low 21 °F 47°21° FebMarch: average high 57 °F, low 29 °F 57°29° MarApril: average high 65 °F, low 35 °F 65°35° AprMay: average high 74 °F, low 46 °F 74°46° MayJune: average high 86 °F, low 55 °F 86°55° JunJuly: average high 91 °F, low 61 °F 91°61° JulAugust: average high 88 °F, low 60 °F 88°60° AugSeptember: average high 82 °F, low 52 °F 82°52° SepOctober: average high 67 °F, low 39 °F 67°39° OctNovember: average high 54 °F, low 28 °F 54°28° NovDecember: average high 44 °F, low 20 °F 44°20° Dec

Precipitation by month inches

0″1″2″3″4″January: 0.26 in precipitation 0.3 JanFebruary: 0.39 in precipitation 0.4 FebMarch: 0.83 in precipitation 0.8 MarApril: 1.49 in precipitation 1.5 AprMay: 2.34 in precipitation 2.3 MayJune: 2.44 in precipitation 2.4 JunJuly: 3.42 in precipitation 3.4 JulAugust: 2.84 in precipitation 2.8 AugSeptember: 1.16 in precipitation 1.2 SepOctober: 1.22 in precipitation 1.2 OctNovember: 0.39 in precipitation 0.4 NovDecember: 0.40 in precipitation 0.4 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Cheyenne Wells 2ne, CO (6 mi away); precipitation: Cheyenne Wells 0.7 Wnw, CO (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

808026a
Arapahoe, CO · 15 mi
808255b
Kit Carson, CO · 21 mi
677626a
Weskan, KS · 23 mi
810716a
Sheridan Lake, CO · 28 mi
808056a
Bethune, CO · 33 mi
808366a
Stratton, CO · 34 mi
810366a
Eads, CO · 34 mi
677586a
Sharon Springs, KS · 35 mi

Colorado planting zones →

Questions about 80810

What planting zone is ZIP code 80810?

ZIP code 80810 (Cheyenne Wells, CO) 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 Cheyenne Wells, CO?

The median last spring frost (32 °F) near 80810 is May 1; after May 17 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Cheyenne Wells 2ne station.

When is the first frost in Cheyenne Wells, CO?

The median first fall frost near 80810 is October 14, giving a median frost-free growing season of 165 days.

When should I plant tomatoes in 80810?

Start tomato seeds indoors around Mar 6 – Mar 20 and set transplants outside around May 8 – May 22, one to three weeks after the median last frost.

How much rain and snow does 80810 get?

About 17.2 inches of precipitation a year (NOAA 1991–2020 normals, Cheyenne Wells 0.7 Wnw station).

How hot do summers get in Cheyenne Wells, CO?

The average high peaks at 91 °F in July, with about 62 days a year at 90 °F or more.

What kind of soil does 80810 have?

The USDA soil survey maps Wiley at the center of ZIP 80810: silt loam, well drained, pH about 7.9 (alkaline).

Did spring come early in Cheyenne Wells, CO in 2026?

Spring leaf-out near 80810 came on Feb 26 in 2026, 21 days earlier than the 1991–2020 average (Mar 19), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Cheyenne Wells, CO?

Intermediate onions: the longest day near 80810 is 14 h 53 min, so day-neutral types bulb best; long-day varieties may not bulb fully.