Green River, WY Climate


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United States / Wyoming / Rock Springs Metro Area / Sweetwater County / Green River / Zip Codes
Green River, WY has a semi-arid climate with hot summers and cold winters. The average high in the summer months is around 90°F and the average low in the winter months is around 20°F. Precipitation is relatively light throughout the year, with only about 8-9 inches of rainfall annually. Snowfall can be significant during the winter months, with an average of around 40 inches each year. Winds are steady throughout the year, often reaching speeds of 10 to 15 mph.

Green River, Wyoming gets 9 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Green River averages 39 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 235 sunny days per year in Green River. The US average is 205 sunny days.

Green River gets some kind of precipitation, on average, 71 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 87 degrees
Winter Low: the January low is 9
Rain: averages 9 inches of rain a year
Snow: averages 39 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Green River is 6.9 (10=best), which means it is more comfortable than most places in Wyoming.

8.8 Summer - 4.9 Winter
June, August and September are the most pleasant months in Green River, while January and December are the least comfortable months.

  ClimateGreen River, WyomingUnited States
  9.1 in.38.1 in.
  39.4 in.27.8 in.
  70.8 days106.2 days
  235 days205 days
  86.8°85.8°
  8.5°21.7°
  6.97
  4.64.3
  6115 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 Green River with an average high temperature of 86.8°, which ranks it as warmer than most places in Wyoming. In Green River, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Green River are June, September and August.
In Green River, there are 19.0 days annually when the high temperature is over 90°, which is about average compared to other places in Wyoming.
January has the coldest nighttime temperatures for Green River with an average of 8.5°. This is about average compared to other places in Wyoming.
In Green River, there are 189.6 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Wyoming.
In Green River, there are 17.7 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Wyoming.
Humidity is very low in Green River, 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 Green River with 1.3 inches of rain, and the driest month is January with 0.4 inches. The wettest season is Summer with 31% of yearly precipitation and 15% occurs in Spring, which is the driest season. The annual rainfall of 9.1 inches in Green River means that it is drier than most places in Wyoming.
May is the rainiest month in Green River with 7.7 days of rain, and January is the driest month with only 4.9 rainy days. There are 70.8 rainy days annually in Green River, which is less rainy than most places in Wyoming. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 22% chance of a rainy day.
An annual snowfall of 39.4 inches in Green River means that it is less snowy than most places in Wyoming. February is the snowiest month in Green River with 7.2 inches of snow, and 8 months of the year have significant snowfall.
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