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

Planting zone for 81029 — Campo, CO

ZIP code 81029 (Campo, Baca County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 29 and the first fall frost October 13.

Where ZIP 81029 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.

Zone6b−5 to 0 °F

Coldest night−20.6 to −17.8 °C

Last frostApr 29

First frostOct 13

2012 zone6a

Was 6a 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 6b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Campo, 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 Campo, CO

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostApril 29median — 50% chance of a later frost

Safe for tender plantsMay 12only 10% chance of frost after

First fall frostOctober 13median — 10% chance by Oct 1

Growing season166 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 19 and returns around October 22.

From the NOAA station Campo 7 S, CO — 6 miles away, elevation 4,105 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 81029

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Mar 18 – Apr 1

SpinachSow outdoors · Mar 18 – Apr 8

Broccoli, cabbageStart indoors · Feb 18 – Mar 4

Broccoli, cabbageTransplant · Apr 8 – Apr 22

Onion setsPlant outdoors · Apr 1 – Apr 15

PotatoesPlant outdoors · Apr 8 – Apr 22

LettuceSow outdoors · Apr 1 – Apr 15

Carrots, beetsSow outdoors · Apr 8 – Apr 22

TomatoesStart indoors · Mar 4 – Mar 18

TomatoesTransplant · May 6 – May 20

Peppers, eggplantStart indoors · Feb 18 – Mar 4

Peppers, eggplantTransplant · May 13 – May 27

BeansSow outdoors · May 6 – May 20

Sweet cornSow outdoors · May 6 – May 20

Cucumbers, squashSow outdoors · May 6 – May 20

Fall lettuce, spinachSow outdoors · Aug 18 – Sep 1

GarlicPlant cloves · Sep 29 – Nov 3

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 29) and first fall frost (Oct 13) 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 81029 came on Feb 19 — 18 days earlier than the 1991–2020 average (Mar 9).

average
Mar 92026
Feb 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).

Soil in Campo, CO

The soil mapped at the center of ZIP 81029 is Manter — sandy loam, somewhat excessively drained.

TextureSandy loamdrains and warms fast; dries out and needs more feeding

pH7.4slightly alkaline; most vegetables like 6.0–7.0

DrainageSomewhat excessively drainednatural drainage class

Organic matter1.5%low — add compost

Hydrologic groupAwater soaks in fast

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Manter-Vona sandy loams, 1 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 81029; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Campo, CO

Summer high92 °Faverage high, July

Winter low19 °Faverage low, January

Hot days68days a year at 90 °F or more

Freezing nights147nights a year at 32 °F or less

Growing degree days3,638base 50 °F — the season’s usable heat

Longest day14 h 43 mindaylight on June 21

Shortest day9 h 37 mindaylight on December 21

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

Precipitation16.6 inper year, rain and melted snow

Snowfall25 inper year; 11 days with snow on the ground

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Campo 7 S, CO (6 mi away); precipitation: Campo 7 S, CO (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6b.

Boise City, OK · 24 mi

Springfield, CO · 26 mi

810646b

Pritchett, CO · 29 mi

810846b

Two Buttes, CO · 34 mi

Colorado planting zones →

Questions about 81029

What planting zone is ZIP code 81029?

ZIP code 81029 (Campo, CO) is in USDA hardiness zone 6b on the 2023 map: the coldest night of an average winter reaches −5 to 0 °F (−20.6 to −17.8 °C).

When is the last frost in Campo, CO?

The median last spring frost (32 °F) near 81029 is April 29; after May 12 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Campo 7 S station.

When is the first frost in Campo, CO?

The median first fall frost near 81029 is October 13, giving a median frost-free growing season of 166 days.

When should I plant tomatoes in 81029?

Start tomato seeds indoors around Mar 4 – Mar 18 and set transplants outside around May 6 – May 20, one to three weeks after the median last frost.

How much rain and snow does 81029 get?

About 16.6 inches of precipitation a year and 25 inches of snowfall (NOAA 1991–2020 normals, Campo 7 S station).

How hot do summers get in Campo, CO?

The average high peaks at 92 °F in July, with about 68 days a year at 90 °F or more.

What kind of soil does 81029 have?

The USDA soil survey maps Manter at the center of ZIP 81029: sandy loam, somewhat excessively drained, pH about 7.4 (slightly alkaline).

Did spring come early in Campo, CO in 2026?

Spring leaf-out near 81029 came on Feb 19 in 2026, 18 days earlier than the 1991–2020 average (Mar 9), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Campo, CO?

Intermediate onions: the longest day near 81029 is 14 h 43 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 81029 change?

Yes. The 2012 USDA map put 81029 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.