Climate and monthly weather forecast
Green River, WY

Weather in January

January, like December, is another subzero cold winter month in Green River, Wyoming, with an average temperature ranging between max 26.6°F (-3°C) and min 10.8°F (-11.8°C). In Green River, the average high-temperature in January is almost the same as in December - a still subzero cold 26.6°F (-3°C). Weather in January »

Weather in February

The last month of the winter, February, is also a subzero cold month in Green River, Wyoming, with temperature in the range of an average high of 28.8°F (-1.8°C) and an average low of 13.5°F (-10.3°C). In Green River, the average high-temperature in February is essentially the same as in January - a still subzero cold 28.8°F (-1.8°C). Weather in February »

Weather in March

March, the first month of the spring in Green River, is a wintry month, with an average temperature fluctuating between 39.7°F (4.3°C) and 24.3°F (-4.3°C). In March, the average high-temperature rises from a subzero cold 28.8°F (-1.8°C) in February to a wintry 39.7°F (4.3°C). Weather in March »

Weather in April

April in Green River, Wyoming, is a chilly spring month, with an average temperature fluctuating between 48.7°F (9.3°C) and 31.5°F (-0.3°C). In Green River, the average high-temperature in April rises from a cold 39.7°F (4.3°C) in March to a chilly 48.7°F (9.3°C). Weather in April »

Weather in May

May, the last month of the spring in Green River, is a mild month, with an average temperature ranging between min 41.4°F (5.2°C) and max 60.3°F (15.7°C). In May, the average high-temperature increases from a frosty 48.7°F (9.3°C) in April to a moderate 60.3°F (15.7°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Green River, Wyoming, with an average temperature ranging between max 73.9°F (23.3°C) and min 52°F (11.1°C). In June, the average high-temperature rises from a moderate 60.3°F (15.7°C) in May to a warm 73.9°F (23.3°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Green River, Wyoming, with an average temperature fluctuating between 81.5°F (27.5°C) and 60.4°F (15.8°C). The warmest month is July, with an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 60.4°F (15.8°C). Weather in July »

Weather in August

August, the last month of the summer in Green River, is another warm month, with temperature in the range of an average high of 79.3°F (26.3°C) and an average low of 58.6°F (14.8°C). In Green River, the average high-temperature in August is almost the same as in July - a still moderately hot 79.3°F (26.3°C). Weather in August »

Weather in September

September, the first month of the autumn in Green River, is still a pleasant month, with an average temperature ranging between max 70.3°F (21.3°C) and min 51.3°F (10.7°C). In Green River, the average high-temperature in September drops from a moderately hot 79.3°F (26.3°C) in August to a pleasant 70.3°F (21.3°C). Weather in September »

Weather in October

October, like September, in Green River, Wyoming, is a cool autumn month, with an average temperature ranging between max 52.5°F (11.4°C) and min 36°F (2.2°C). In October, the average high-temperature plummets from a pleasant 70.3°F (21.3°C) in September to a cool 52.5°F (11.4°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a wintry month in Green River, Wyoming, with an average temperature ranging between max 38.7°F (3.7°C) and min 23.9°F (-4.5°C). In November, the average high-temperature drops from a cool 52.5°F (11.4°C) in October to a cold 38.7°F (3.7°C). Weather in November »

Weather in December

The first month of the winter, December, is still a freezing cold month in Green River, Wyoming, with an average temperature fluctuating between 11.5°F (-11.4°C) and 25.7°F (-3.5°C). December is the coldest month, with an average high-temperature of 25.7°F (-3.5°C) and an average low-temperature of 11.5°F (-11.4°C). Weather in December »
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FAQ

What is the most humid month in Green River?

With an average relative humidity of 84%, January is the most humid month.

How many days does it rain in Green River?

In Green River, during the entire year, the rain falls for 93.5 days and collects up to 10.31" (262mm) of precipitation.

When does it snow in Green River?

January through June, September through December are months with snowfall.

How many days does it snow in Green River?

Throughout the year, in Green River, Wyoming, there are 75.5 snowfall days, and 30.16" (766mm) of snow is accumulated.

What are the months with the least sunshine in Green River?

January and December, with an average of 5.9h of sunshine, are months with the least sunshine in Green River.

What are the months with the lowest UV index in Green River?

The months with the lowest UV index in Green River, Wyoming, are January through April, October through December, with an average maximum UV index of 2.

What is the snowiest month in Green River?

March is the month with the most snowfall in Green River. Snow falls for 13 days and accumulates 6.14" (156mm) of snow.

When is Daylight Saving Time (DST) in Green River?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Green River, Wyoming, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from MDT to MST.

What is the rainiest month in Green River?

The month with the most rainfall in Green River, Wyoming, is May, when the rain falls for 13.8 days and typically aggregates up to 1.5" (38mm) of precipitation.

When are the longest days in Green River?

June has the longest days of the year in Green River, Wyoming, with an average of 15h and 8min of daylight.

What is the warmest month in Green River?

The warmest month is July, with an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 60.4°F (15.8°C).

What are the least humid months in Green River?

July and August, with an average relative humidity of 31%, are the least humid months in Green River, Wyoming.

What is the driest month in Green River?

July is the month with the least rainfall in Green River, Wyoming. Rain falls for 7.8 days and accumulates 0.47" (12mm) of precipitation.

When it does not snow in Green River?

July and August are months without snowfall.

What are the months with the most sunshine in Green River?

July and August, with an average of 11.8h of sunshine, are months with the most sunshine in Green River, Wyoming.

When is the highest UV index in Green River?

With an average maximum UV index of 6, July is the month with the highest UV index in Green River.

What is the coldest month in Green River?

December is the coldest month in Green River, Wyoming, with an average high-temperature of 25.7°F (-3.5°C) and an average low-temperature of 11.5°F (-11.4°C).

What is the month with the shortest days in Green River?

December has the shortest days of the year, with an average of 9h and 14min of daylight.

Average temperature
Green River, WY

Average temperature - Green River, WY

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is December (25.7°F).

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).

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Average pressure
Green River, WY

Average pressure - Green River, WY

The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed
Green River, WY

Average wind speed - Green River, WY

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).

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Average humidity
Green River, WY

Average humidity - Green River, WY

The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are July and August (31%).

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Average rainfall
Green River, WY

Average rainfall - Green River, WY

The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is July (0.47").

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Average rainfall days
Green River, WY

Average rainfall days - Green River, WY

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is December (4.7 days).

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Average snowfall
Green River, WY

Average snowfall - Green River, WY

The month with the highest snowfall is March (6.14").
The months with the least snowfall are July and August (0").

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Average snowfall days
Green River, WY

Average snowfall days - Green River, WY

The month with the highest number of snowfall days is December (13.5 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight / Average sunshine
Green River, WY

Average daylight / Average sunshine - Green River, WY

The month with the longest days is June (Average daylight: 15h and 8min).
The month with the shortest days is December (Average daylight: 9h and 14min).

The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).

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Average sunshine days
Green River, WY

Average sunshine days - Green River, WY

The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is April (11.5 days).

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Average UV index
Green River, WY

Average UV index - Green River, WY

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average visibility
Green River, WY

Average visibility - Green River, WY

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).

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