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Planting zones · Cheyenne, Wyoming

What Planting Zone Is Cheyenne?

Cheyenne is in USDA zone 5b. High plains at about 6,100 ft: about 15.4 in. of precipitation, 63 in. of snow, and a short frost-free season of about 141 days (median last frost May 12).

  • USDA zone (2023)5b
  • Coldest night (avg.)-15 to -10°FZIP 82001
  • Median last frostMay 1232°F
  • Median first frostOct 132°F
  • Annual precipitation15 inches
  • Frost-free season141 days

Cheyenne hardiness zone by ZIP code

On the 2023 USDA Plant Hardiness Zone Map, the ZIP codes we sampled in Cheyenne fall in zone 5b; 82001 (zone 5b) has an average annual extreme minimum of -15 to -10°F. Choose perennials, shrubs, and trees rated at least to zone 5.

2023 USDA zone for sampled Cheyenne ZIP codes
ZIPZoneAvg. coldest night
820015b-15 to -10°F
820075b-15 to -10°F
820095b-15 to -10°F

Not listed? Look up any ZIP code.

Frost dates and when to plant

The median last spring frost (32°F) at Cheyenne Regional Airport is May 12 and the median first fall frost is Oct 1, a typical frost-free season of about 141 days.

Plant container perennials and shrubs after the median last frost (May 12), or in early fall at least six weeks before the median first frost (Oct 1) so roots can settle in before the ground freezes.

Rainfall and heat in Cheyenne

Average annual precipitation is 15 inches (Cheyenne Regional Airport, 1991–2020), spread across the year with May the wettest month and January the driest.

The average high in July is about 84°F and the average low in December is about 18°F, measured at about 6,130 ft.

That is why a zone rating alone isn't enough for a xeriscape here: pick plants that are both cold-hardy to zone 5 and rated very low or low water once established.

Low-water plants for Cheyenne

65 plants in our database are hardy to zone 5 and suited to zone 5. Here are 12, driest first, across plant types.

See all zone 5 plants

Frequently asked questions

What planting zone is Cheyenne?

Cheyenne, WY is in USDA hardiness zone 5b on the 2023 USDA Plant Hardiness Zone Map, based on the ZIP codes we sampled (82001: 5b, 82007: 5b, 82009: 5b). In 82001, the average coldest night of the year is -15 to -10°F.

When is the last frost in Cheyenne?

The median last spring frost (32°F) at Cheyenne Regional Airport is May 12 and the median first fall frost is Oct 1, a typical frost-free season of about 141 days.

How much rain does Cheyenne get?

Average annual precipitation is 15 inches (Cheyenne Regional Airport, 1991–2020), spread across the year with May the wettest month and January the driest.

Sources

  1. NOAA NCEI U.S. Climate Normals 1991–2020, Cheyenne Regional Airport (USW00024018). ncei.noaa.gov
  2. USDA ARS 2023 Plant Hardiness Zone Map, by ZIP. planthardiness.ars.usda.gov