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

Planting zone for 82212 — Fort Laramie, WY

ZIP code 82212 (Fort Laramie, Goshen County) is in USDA zone 5a: the coldest winter night averages −20 to −15 °F. The median last spring frost is May 14 and the first fall frost September 26.

Where ZIP 82212 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.

Zone5a−20 to −15 °F
Coldest night−28.9 to −26.1 °C
Last frostMay 14
First frostSep 26
2012 zone4b

Was 4b 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 5a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Fort 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 Fort Laramie, WY

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 27only 10% chance of frost after
First fall frostSeptember 26median — 10% chance by Sep 12
Growing season134 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 3 and returns around October 5.

From the NOAA station Old Ft Laramie, WY — 4 miles away, elevation 4,249 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 82212

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 1 – Aug 15
GarlicPlant cloves · Sep 12 – Oct 17
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 14) and first fall frost (Sep 26) 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 82212 came on Mar 1 — 31 days earlier than the 1991–2020 average (Apr 1).

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 5a in Wyoming

542 plants native to the lower 48 states, recorded in Wyoming, and rated by the USDA to survive −20 °F or colder — the bottom of zone 5a. Each links to its USDA PLANTS profile.

Trees 22

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 °Fblue spruce100 ft · blooms late spring · medium shade tolerance · to −38 °Fboxelder60 ft · blooms early spring · low shade tolerance · to −46 °FDouglas-fir200 ft · blooms mid spring · medium shade tolerance · to −33 °F

Shrubs 98

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °Falderleaf 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 °F

Wildflowers & perennials 249

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine bistort1 ft · blooms mid spring · high shade tolerance · to −38 °Falpine mountainsorrel1 ft · blooms mid summer · medium shade tolerance · to −43 °Falpine sweetvetch2 ft · blooms early summer · high shade tolerance · to −62 °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 161

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 3

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °Friverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °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 Fort Laramie, WY.

Soil in Fort Laramie, WY

The soil mapped at the center of ZIP 82212 is Valent — loamy fine sand, excessively drained.

TextureLoamy fine sanddrains and warms fast; dries out and needs more feeding
pH7.2neutral; most vegetables like 6.0–7.0
DrainageExcessively drainednatural drainage class
Organic matter0.65%low — add compost
Hydrologic groupAwater soaks in fast
Farmland classPrime farmland if irrigatedUSDA classification

Map unit: Valent-Dwyer loamy fine sands, 3 to 10 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 82212; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Fort Laramie, WY

Summer high91 °Faverage high, July
Winter low15 °Faverage low, January
Hot days45days a year at 90 °F or more
Freezing nights196nights a year at 32 °F or less
Growing degree days2,654base 50 °F — the season’s usable heat
Longest day15 h 16 mindaylight on June 21
Shortest day9 h 05 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation14.9 inper year, rain and melted snow
Snowfall28 inper year; 25 days with snow on the ground

Average high and low, by month

0°10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 43 °F, low 15 °F 43°15° JanFebruary: average high 45 °F, low 17 °F 45°17° FebMarch: average high 55 °F, low 24 °F 55°24° MarApril: average high 62 °F, low 30 °F 62°30° AprMay: average high 71 °F, low 41 °F 71°41° MayJune: average high 83 °F, low 50 °F 83°50° JunJuly: average high 91 °F, low 57 °F 91°57° JulAugust: average high 89 °F, low 54 °F 89°54° AugSeptember: average high 80 °F, low 44 °F 80°44° SepOctober: average high 65 °F, low 31 °F 65°31° OctNovember: average high 52 °F, low 22 °F 52°22° NovDecember: average high 43 °F, low 15 °F 43°15° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″January: 0.24 in precipitation, 2.2 in snowfall 0.2❄2 JanFebruary: 0.53 in precipitation, 6.3 in snowfall 0.5❄6 FebMarch: 0.80 in precipitation, 3.1 in snowfall 0.8❄3 MarApril: 1.71 in precipitation, 3.5 in snowfall 1.7❄4 AprMay: 2.93 in precipitation, 0.6 in snowfall 2.9❄1 MayJune: 2.19 in precipitation 2.2 JunJuly: 1.78 in precipitation 1.8 JulAugust: 1.36 in precipitation 1.4 AugSeptember: 1.39 in precipitation 1.4 SepOctober: 1.13 in precipitation, 2.4 in snowfall 1.1❄2 OctNovember: 0.46 in precipitation, 3.2 in snowfall 0.5❄3 NovDecember: 0.42 in precipitation, 6.2 in snowfall 0.4❄6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Old Ft Laramie, WY (4 mi away); precipitation: Old Ft Laramie, WY (4 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 5a.

822145a
Guernsey, WY · 11 mi
822235a
Lingle, WY · 12 mi
822195a
Jay Em, WY · 15 mi
822155a
Hartville, WY · 17 mi
822435a
Veteran, WY · 20 mi
822405a
Torrington, WY · 22 mi
822445a
Yoder, WY · 26 mi
822135a
Glendo, WY · 29 mi

Wyoming planting zones →

Questions about 82212

What planting zone is ZIP code 82212?

ZIP code 82212 (Fort Laramie, WY) is in USDA hardiness zone 5a on the 2023 map: the coldest night of an average winter reaches −20 to −15 °F (−28.9 to −26.1 °C).

When is the last frost in Fort Laramie, WY?

The median last spring frost (32 °F) near 82212 is May 14; after May 27 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Old Ft Laramie station.

When is the first frost in Fort Laramie, WY?

The median first fall frost near 82212 is September 26, giving a median frost-free growing season of 134 days.

When should I plant tomatoes in 82212?

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 82212 get?

About 14.9 inches of precipitation a year and 28 inches of snowfall (NOAA 1991–2020 normals, Old Ft Laramie station).

How hot do summers get in Fort Laramie, WY?

The average high peaks at 91 °F in July, with about 45 days a year at 90 °F or more.

What kind of soil does 82212 have?

The USDA soil survey maps Valent at the center of ZIP 82212: loamy fine sand, excessively drained, pH about 7.2 (neutral).

Did spring come early in Fort Laramie, WY in 2026?

Spring leaf-out near 82212 came on Mar 1 in 2026, 31 days earlier than the 1991–2020 average (Apr 1), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Fort Laramie, WY?

Long-day onions: the longest day near 82212 is 15 h 16 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 82212 change?

Yes. The 2012 USDA map put 82212 in zone 4b; the 2023 map puts it in zone 5a. The newer map uses 1991–2020 data and more weather stations.