August weather forecast
Green River, WY

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Weather in August

In Green River, Wyoming, while August sees continuity in the summer season, it also hints at the approaching autumn. The weather experiences a slight dip in the average high temperature from July's peak to 79.3°F (26.3°C). Rainfall rises marginally to 0.55in yet fails to disrupt the bright sunny days and extensive daylight hours, synonymous with summer. August weather in Green River carries the last remnants of summer heat while preparing for the oncoming mild autumn climate. This change is evident in the subtly decreasing temperatures and the evolving natural landscape of the city.

Temperature

Green River's average high-temperature in August sits at a still moderately hot 79.3°F (26.3°C), showing little difference from the previous month. In the month of August, the average temperature dips to a moderate 58.6°F (14.8°C) during the night.

Humidity

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

Rainfall

In Green River, Wyoming, in August, during 7.5 rainfall days, 0.55" (14mm) of precipitation is typically accumulated. In Green River, during the entire year, the rain falls for 93.5 days and collects up to 10.31" (262mm) of precipitation.

Snowfall

In Green River, snow does not fall in July and August.

Daylight

In August, the average length of the day is 13h and 47min.
On the first day of the month, sunrise is at 6:13 am and sunset at 8:34 pm. On the last day of August, sunrise is at 6:43 am and sunset at 7:52 pm MDT.

Sunshine

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

UV index

In August, the average daily maximum UV index in Green River is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 5 during August leads to these advisories:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

What are the temperatures in Green River in August?

The high-temperature in Green River, Wyoming, during August is 79.3°F (26.3°C) and the low-temperature is 58.6°F (14.8°C).

What is the least humid month in Green River?

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

What is the average humidity in August in Green River?

In August, the average relative humidity in Green River, Wyoming, is 31%.

How much does it rain in Green River in August?

In August, in Green River, the rain falls for 7.5 days. Throughout August, 0.55" (14mm) of precipitation is accumulated.

When it does not snow in Green River?

July and August are months without snowfall.

Does it snow in Green River in August?

In Green River, in August, it doesn't snow. In September, it regularly snows.

How many hours of daylight does Green River have in August?

The average day length in August in Green River is 13h and 47min.

When are sunrise and sunset in August in Green River?

On the first day of August in Green River, sunrise is at 6:13 am and sunset at 8:34 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 7:52 pm MDT.

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

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

How many hours of sunshine does Green River have in August?

In Green River, the average sunshine duration in August is 11.8h.

What is the UV index intensity in August in Green River?

In Green River, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Green River, WY

Average temperature in August - Green River, WY
  • Average high temperature in August: 79.3°F

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).

  • Average low temperature in August: 58.6°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 in August
Green River, WY

Average pressure in August - Green River, WY
  • Average pressure in August: 29.97"Hg

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 in August
Green River, WY

Average wind speed in August - Green River, WY
  • Average wind speed in August: 8.7mph

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 in August
Green River, WY

Average humidity in August - Green River, WY
  • Average humidity in August: 31%

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 in August
Green River, WY

Average rainfall in August - Green River, WY
  • Average rainfall in August: 0.55"

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 in August
Green River, WY

Average rainfall days in August - Green River, WY
  • Average rainfall days in August: 7.5 days

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 in August
Green River, WY

Average snowfall in August - Green River, WY
  • Average snowfall in August: 0"

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 in August
Green River, WY

Average snowfall days in August - Green River, WY
  • Average snowfall days in August: 0 days

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 in August /
Average sunshine in August
Green River, WY

Average daylight in August / Average sunshine in August - Green River, WY
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in August: 11h and 5min

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 in August
Green River, WY

Average sunshine days in August - Green River, WY
  • Average sunshine days in August: 18.7 days

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 in August
Green River, WY

Average UV index in August - Green River, WY
  • Average UV index in August: 5

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 cloud cover in August
Green River, WY

Average cloud cover in August - Green River, WY
  • Average cloud cover in August: 13

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in August
Green River, WY

Average visibility in August - Green River, WY
  • Average visibility in August: 6mi

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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Green River, Wyoming, USA

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