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The climate of Wyoming (United States of America)
The state of Wyoming mainly has a mountainous landscape. The Rocky Mountains, with peaks higher than 4,000 meters mainly determine the landscape in Wyoming. Gannett Peak is the highest point in the state with an altitude of 4,207 meters above sea level. The northeastern and eastern parts of Wyoming consist of the flat region ‘The Great Plains’, this region consists of steppe and grasslands. The largest part of the state of Wyoming has a cold steppe climate. Places with higher precipitation figures have a moderate continental climate. Several mountainous regions where annual precipitation figures are higher than 500 millimeters have this climate type. Most places in Wyoming can only record 200-300 millimeters of annual precipitation. This makes Wyoming one of the driest states in the United States. Some regions even have a desert climate. The lowest situated regions in Bighorn Basin have a cold desert climate (type BWk) with only 130-200 millimeters of annual precipitation. Winters in Wyoming are cold with wintry conditions. Several winter sports regions with excellent snow conditions are situated in Wyoming. The eastern part of Wyoming is located in Tornado Alley, a large region in the United States with a risk of tornadoes.

Climate information of places in Wyoming
The climate information given on this page is only brief. Specific information on weather and climate can be found on the pages per region or city. The following climate information is available for Wyoming:

Casper
Cheyenne
Gillette

Jackson
Laramie
Rock Springs

Rocky Mountains
Sheridan
Yellowstone National Park

 

 

Climate information
Throughout Wyoming several climate figures and temperatures can be recorded. The figures below are for Cheyenne and cannot be seen as an average for this state. For climate figures for other places and regions in Wyoming please, visit the individual climate pages.

average
 maximum
temperature (°C)

average
minimum

temperature (°C)
average
hours of sunshine

per
day
average days with precipitation
per month
average
mm
precipitation
per month
average
sea
temperature (°C)
January 3 -10 6 5 n/a
February 5 -8 7 6 n/a
March 7 -6 8 8 n/a
April 13 -1 9 9 n/a
May 19 4 9 11 n/a
June 24 9 10 9 n/a
July 28 12 10 10 n/a
August 27 11 10 9 n/a
September 22 6 9 7 n/a
October 16 1 8 6 n/a
November 8 -5 6 6 n/a
December 4 -9 6 5 n/a
= 0-5 mm ● = 6-30 mm ● = 31-60 mm ● = 61-100 mm ● = 101-200 mm ● = over 200 mm
= 0-0.2 inches ● = 0.2-1.2 inches ● = 1.2-2.4 inches ● = 2.5-4 inches ● = 4.1-8 inches ● = over 8 inches

More climate information
Climate tables are useful but they don’t give an overall picture of the climate and possible weather conditions during a period of time. How high the chances are of hot or cold weather or hurricanes can often not be found in these tables. This is why we offer extra climate information per month. The figures below apply to Cheyenne. For climate figures on specific regions and places please, visit the relevant individual climate pages.
 

chance of
(very) hot

weather

chance of
(very) cool
weather
chance of
long-term

precipitation
chance of
hurricanes
(cyclones)
chance of
sunny days

UV-index

January
February
March
April
May
June
July
August
September
October
November
December
click here for the explanation of the symbols

Disclaimer
The information at this site was carefully composed from climate data collected by meteorological services, meteorological offices, climate experts and other sources. “More climate info” is based on statistics, climate data and personal experience. No rights can be derived from this site. Weather has no memory and gives no guaranties. Nothing is as changeable and unpredictable as the weather. The authors of this site feel in no way responsible for any damages caused by misinterpretation or other circumstances that may influence your holiday or trip to a certain destination. We provide information, it’s up to the reader to use it to it’s benefit.

 

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