Green River (WY) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Green River.
Climate overview of Green River
Green River, Wyoming, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 30°C (86°F) in July, while winters cool to 0°C (32°F) in December.
Rain/snowfall is extremely rare, with only 240 mm (9.4 in) falling across the entire year.
Green River Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Green River - and find the best time to visit.
Monthly Temperature in Green River
Depending on the time of the year, temperatures range from very warm to very cold in Green River. Average maximum daytime temperatures range from a very warm 30°C (86°F) in July, the warmest time of the year, to a very cold 0°C (32°F) during cooler months like December.
At night, you can expect temperatures ranging from 12°C (54°F) in July to around -12°C (10°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Green River
Green River has a dry climate with very low precipitation, averaging 240 mm (9.4 in) of rain/snowfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, May it receives moderate rainfall, averaging 44 mm (1.7 in) of precipitation, recorded across 9 rainy days. In contrast, the driest month January brings less snowfall, with 7.1 mm (0.3 in) over 5 snowy days. For more details, please visit our Green River Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Green River
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, August and September
- Warmest weather: July and August
- Seasonal pattern: Very little rainfall for most of the year, with very warm summers and very cold winters
- Coldest conditions: December, with freezing nights around -12°C (10°F).
Frequently asked questions about the climate in Green River
What is the best time to visit Green River?
June, August and September typically offer the most optimal weather in Green River. In contrast, January, February and December tend to have less optimal conditions. Green River has very little rainfall for most of the year, with very warm summers and very cold winters.
What temperatures can I expect in Green River?
Daytime highs range from 0°C (32°F) in December to 30°C (86°F) in July. Nighttime lows range from -12°C (10°F) to 12°C (54°F). Temperatures vary considerably through the year.
How much rain does Green River get?
Annual rainfall is around 240 mm (9.4 in). May is the wettest month with 44 mm (1.7 in), while January is the driest with 7.1 mm (0.3 in).
Green River 3-Day Forecast
Green River (WY) 3-Day Forecast
Green River on the map
Green River is highlighted - select any city to see its climate.
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