Wyoming’s climate is generally semi-arid and continental, and is drier and windier in comparison to most of the United States with greater temperature extremes, ranging from USDA Plant Hardiness Zones 3a through 6a.Wyoming’s climate varies widely per different areas of the state so get to know which zone your city is located in so that you can address and avoid potential issues before they become problematic.
The USDA zones map is a useful system for determining what plants will survive and grow in certain areas ofWyoming.
Understanding how these hardiness zones work means you can choose the right planting time, and optimize growing for your climate.
Summers in Wyoming are warm with July high temperatures averaging between 80 and 90 °F (27 and 32 °C) in most of the state.
With increasing elevation, however, this average drops rapidly with locations above 9,000 feet (2,700 m) averaging around 70 °F (21 °C).
Summer nights throughout the state are characterized by a rapid cooldown with even the hottest locations averaging in the 50–60 °F (10–16 °C) range at night. In most of the state, most of the precipitation tends to fall in the late spring and early summer.
Winters are cold, but are variable with periods of sometimes extreme cold interspersed between generally mild periods, with Chinook winds providing unusually warm temperatures in some locations.