Boulder, WY Climate


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United States / Wyoming / No Metro Area / Sublette County / Boulder / Zip Codes
Boulder, WY is known for its sunny climate and temperate weather. The average temperature range throughout the year is between 37°F to 83°F with an average of more than 300 days of sunshine a year. Due to the high temperatures during the summer months, Boulder experiences very low humidity making it a great place for hiking and outdoor activities. During the winter months temperatures will typically drop to below freezing but rarely get too cold; snowfall is generally light due to the high elevation allowing for easy access to winter activities like skiing and snowshoeing.

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Boulder is 6.1 (10=best), which means it is less comfortable than most places in Wyoming.

8.6 Summer - 3.9 Winter
July, August and June are the most pleasant months in Boulder, while December and January are the least comfortable months.

  ClimateBoulder, WyomingUnited States
  9.5 in.38.1 in.
  56.4 in.27.8 in.
  77.0 days106.2 days
  236 days205 days
  79.9°85.8°
  -3.6°21.7°
  6.17
  4.74.3
  7018 ft.2443 ft.
Climate
YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Boulder with an average high temperature of 79.9°, which ranks it as one of the coolest places in Wyoming. In Boulder, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Boulder are August, July and June.
In Boulder, there are 1.6 days annually when the high temperature is over 90°, which is one of the coolest places in Wyoming.
January has the coldest nighttime temperatures for Boulder with an average of -3.6°. This is one of the coldest places in Wyoming.
In Boulder, there are 253.1 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Wyoming.
In Boulder, there are 60.6 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Wyoming.
Humidity is very low in Boulder, so low that the dry air may be uncomfortable for some people. There are few days during the year when the humidity is even noticable. A very dry climate can lead to cracked, itchy skin and dry eyes.
May is the wettest month in Boulder with 1.3 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Autumn with 32% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 9.5 inches in Boulder means that it is drier than most places in Wyoming.
May is the rainiest month in Boulder with 8.4 days of rain, and October is the driest month with only 5.4 rainy days. There are 77.0 rainy days annually in Boulder, which is about average compared to other places in Wyoming. The rainiest season is Autumn when it rains 27% of the time and the driest is Winter with only a 22% chance of a rainy day.
An annual snowfall of 56.4 inches in Boulder means that it is about average compared to other places in Wyoming. December is the snowiest month in Boulder with 10.7 inches of snow, and 9 months of the year have significant snowfall.
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