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

Planting zone for 82072 — Laramie, WY

ZIP code 82072 (Laramie, Albany County) is in USDA zone 4a: the coldest winter night averages −30 to −25 °F. The median last spring frost is June 7 and the first fall frost September 4.

Where ZIP 82072 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.

Zone4a−30 to −25 °F

Coldest night−34.4 to −31.7 °C

Last frostJun 7

First frostSep 4

2012 zone4b

Was 4b on the 2012 map — half a zone colder now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 4a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Laramie, WY…

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 Laramie, WY

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostJune 7median — 50% chance of a later frost

Safe for tender plantsJune 29only 10% chance of frost after

First fall frostSeptember 4median — 10% chance by Aug 17

Growing season88 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 22 and returns around September 14.

From the NOAA station Laramie 2 Nw, WY — 7 miles away, elevation 7,139 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 82072

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 26 – May 10

SpinachSow outdoors · Apr 26 – May 17

Broccoli, cabbageStart indoors · Mar 29 – Apr 12

Broccoli, cabbageTransplant · May 17 – May 31

Onion setsPlant outdoors · May 10 – May 24

PotatoesPlant outdoors · May 17 – May 31

LettuceSow outdoors · May 10 – May 24

Carrots, beetsSow outdoors · May 17 – May 31

TomatoesStart indoors · Apr 12 – Apr 26

TomatoesTransplant · Jun 14 – Jun 28

Peppers, eggplantStart indoors · Mar 29 – Apr 12

Peppers, eggplantTransplant · Jun 21 – Jul 5

BeansSow outdoors · Jun 14 – Jun 28

Sweet cornSow outdoors · Jun 14 – Jun 28

Cucumbers, squashSow outdoors · Jun 14 – Jun 28

Fall lettuce, spinachSow outdoors · Jul 10 – Jul 24

GarlicPlant cloves · Aug 21 – Sep 25

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Jun 7) and first fall frost (Sep 4) 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 82072 came on Mar 31 — 27 days earlier than the 1991–2020 average (Apr 27).

average
Apr 272026
Mar 31

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 4a in Wyoming

431 plants native to the lower 48 states, recorded in Wyoming, and rated by the USDA to survive −30 °F or colder — the bottom of zone 4a. 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 Laramie, WY.

Soil in Laramie, WY

The soil mapped at the center of ZIP 82072 is Fiveoh — fine sandy loam, well drained.

TextureFine sandy loamdrains and warms fast; dries out and needs more feeding

pH7.9alkaline; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter1.25%low — add compost

Hydrologic groupAwater soaks in fast

Farmland classFarmland of statewide importance, if irrigatedUSDA classification

Map unit: Fiveoh, cobbly substratum-Joemre fine sandy loams, 1 to 5 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 82072; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Laramie, WY

Summer high81 °Faverage high, July

Winter low8 °Faverage low, January

Hot days4days a year at 90 °F or more

Freezing nights217nights a year at 32 °F or less

Growing degree days1,225base 50 °F — the season’s usable heat

Longest day15 h 10 mindaylight on June 21

Shortest day9 h 10 mindaylight on December 21

Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)

Precipitation10.9 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: Laramie 2 Nw, WY (7 mi away); precipitation: Laramie 2 Nw, WY (7 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

Horse Creek, WY · 22 mi

820525b

Buford, WY · 24 mi

820845b

Tie Siding, WY · 26 mi

820834b

Rock River, WY · 31 mi

820595b

Granite Canon, WY · 32 mi

All 3 ZIP codes in Laramie → · Wyoming planting zones →

Questions about 82072

What planting zone is ZIP code 82072?

ZIP code 82072 (Laramie, WY) is in USDA hardiness zone 4a on the 2023 map: the coldest night of an average winter reaches −30 to −25 °F (−34.4 to −31.7 °C).

When is the last frost in Laramie, WY?

The median last spring frost (32 °F) near 82072 is June 7; after June 29 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Laramie 2 Nw station.

When is the first frost in Laramie, WY?

The median first fall frost near 82072 is September 4, giving a median frost-free growing season of 88 days.

When should I plant tomatoes in 82072?

Start tomato seeds indoors around Apr 12 – Apr 26 and set transplants outside around Jun 14 – Jun 28, one to three weeks after the median last frost.

How much rain and snow does 82072 get?

About 10.9 inches of precipitation a year (NOAA 1991–2020 normals, Laramie 2 Nw station).

How hot do summers get in Laramie, WY?

The average high peaks at 81 °F in July, with about 4 days a year at 90 °F or more.

What kind of soil does 82072 have?

The USDA soil survey maps Fiveoh at the center of ZIP 82072: fine sandy loam, well drained, pH about 7.9 (alkaline).

Did spring come early in Laramie, WY in 2026?

Spring leaf-out near 82072 came on Mar 31 in 2026, 27 days earlier than the 1991–2020 average (Apr 27), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Laramie, WY?

Long-day onions: the longest day near 82072 is 15 h 10 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 82072 change?

Yes. The 2012 USDA map put 82072 in zone 4b; the 2023 map puts it in zone 4a. The newer map uses 1991–2020 data and more weather stations.