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

Planting zone for 80132 — Monument, CO

ZIP code 80132 (Monument, El Paso County) is in USDA zone 5b: the coldest winter night averages −15 to −10 °F. The median last spring frost is May 14 and the first fall frost October 1.

Where ZIP 80132 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.

Zone5b−15 to −10 °F
Coldest night−26.1 to −23.3 °C
Last frostMay 14
First frostOct 1
2012 zone5b

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 5b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Monument, 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 Monument, CO

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 14median — 50% chance of a later frost
Safe for tender plantsMay 31only 10% chance of frost after
First fall frostOctober 1median — 10% chance by Sep 16
Growing season138 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 3 and returns around October 10.

From the NOAA station Monument, CO — within 1 mile, elevation 7,080 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 80132

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Apr 2 – Apr 16
SpinachSow outdoors · Apr 2 – Apr 23
Broccoli, cabbageStart indoors · Mar 5 – Mar 19
Broccoli, cabbageTransplant · Apr 23 – May 7
Onion setsPlant outdoors · Apr 16 – Apr 30
PotatoesPlant outdoors · Apr 23 – May 7
LettuceSow outdoors · Apr 16 – Apr 30
Carrots, beetsSow outdoors · Apr 23 – May 7
TomatoesStart indoors · Mar 19 – Apr 2
TomatoesTransplant · May 21 – Jun 4
Peppers, eggplantStart indoors · Mar 5 – Mar 19
Peppers, eggplantTransplant · May 28 – Jun 11
BeansSow outdoors · May 21 – Jun 4
Sweet cornSow outdoors · May 21 – Jun 4
Cucumbers, squashSow outdoors · May 21 – Jun 4
Fall lettuce, spinachSow outdoors · Aug 6 – Aug 20
GarlicPlant cloves · Sep 17 – Oct 22
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 14) and first fall frost (Oct 1) 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 80132 came on Mar 4 — 34 days earlier than the 1991–2020 average (Apr 7).

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 5b in Colorado

546 plants native to the lower 48 states, recorded in Colorado, and rated by the USDA to survive −15 °F or colder — the bottom of zone 5b. Each links to its USDA PLANTS profile.

Trees 27

Shrubs 98

Wildflowers & perennials 246

Grasses 163

Vines 3

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 Monument, CO.

Soil in Monument, CO

The soil mapped at the center of ZIP 80132 is Tomah — loamy sand, well drained.

TextureLoamy sanddrains and warms fast; dries out and needs more feeding
pH6.7neutral; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2%moderate
Hydrologic groupBwater soaks in moderately
Farmland classNot prime farmlandUSDA classification

Map unit: Tomah-Crowfoot loamy sands, 3 to 8 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 80132; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Monument, CO

Summer high83 °Faverage high, July
Winter low16 °Faverage low, January
Hot days7days a year at 90 °F or more
Freezing nights184nights a year at 32 °F or less
Growing degree days1,953base 50 °F — the season’s usable heat
Longest day14 h 55 mindaylight on June 21
Shortest day9 h 25 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation19.4 inper year, rain and melted snow

Average high and low, by month

10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 41 °F, low 16 °F 41°16° JanFebruary: average high 43 °F, low 18 °F 43°18° FebMarch: average high 50 °F, low 23 °F 50°23° MarApril: average high 57 °F, low 29 °F 57°29° AprMay: average high 68 °F, low 39 °F 68°39° MayJune: average high 79 °F, low 47 °F 79°47° JunJuly: average high 83 °F, low 54 °F 83°54° JulAugust: average high 80 °F, low 52 °F 80°52° AugSeptember: average high 72 °F, low 44 °F 72°44° SepOctober: average high 60 °F, low 33 °F 60°33° OctNovember: average high 48 °F, low 22 °F 48°22° NovDecember: average high 41 °F, low 17 °F 41°17° Dec

Precipitation by month inches

0″1″2″3″4″January: 0.58 in precipitation 0.6 JanFebruary: 0.73 in precipitation 0.7 FebMarch: 1.53 in precipitation 1.5 MarApril: 2.44 in precipitation 2.4 AprMay: 2.55 in precipitation 2.5 MayJune: 1.71 in precipitation 1.7 JunJuly: 2.72 in precipitation 2.7 JulAugust: 3.01 in precipitation 3.0 AugSeptember: 1.60 in precipitation 1.6 SepOctober: 1.02 in precipitation 1.0 OctNovember: 0.80 in precipitation 0.8 NovDecember: 0.69 in precipitation 0.7 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Monument, CO (within 1 mile); precipitation: Monument 1.4 Ne, CO (within 1 mile). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 5b.

Colorado planting zones →

Questions about 80132

What planting zone is ZIP code 80132?

ZIP code 80132 (Monument, CO) is in USDA hardiness zone 5b on the 2023 map: the coldest night of an average winter reaches −15 to −10 °F (−26.1 to −23.3 °C).

When is the last frost in Monument, CO?

The median last spring frost (32 °F) near 80132 is May 14; after May 31 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Monument station.

When is the first frost in Monument, CO?

The median first fall frost near 80132 is October 1, giving a median frost-free growing season of 138 days.

When should I plant tomatoes in 80132?

Start tomato seeds indoors around Mar 19 – Apr 2 and set transplants outside around May 21 – Jun 4, one to three weeks after the median last frost.

How much rain and snow does 80132 get?

About 19.4 inches of precipitation a year (NOAA 1991–2020 normals, Monument 1.4 Ne station).

How hot do summers get in Monument, CO?

The average high peaks at 83 °F in July, with about 7 days a year at 90 °F or more.

What kind of soil does 80132 have?

The USDA soil survey maps Tomah at the center of ZIP 80132: loamy sand, well drained, pH about 6.7 (neutral).

Did spring come early in Monument, CO in 2026?

Spring leaf-out near 80132 came on Mar 4 in 2026, 34 days earlier than the 1991–2020 average (Apr 7), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Monument, CO?

Intermediate onions: the longest day near 80132 is 14 h 55 min, so day-neutral types bulb best; long-day varieties may not bulb fully.