August weather forecast
Greybull, WY

Weather in August

August, the last month of the summer, in Greybull, is another warm month, with average temperature ranging between min 61.7°F (16.5°C) and max 82.6°F (28.1°C).

Temperature

In Greybull, the average high-temperature is essentially the same as in July - a still warm 82.6°F (28.1°C). In Greybull, the average low-temperature is 61.7°F (16.5°C).

Humidity

Months with the lowest humidity are July and August, with an average relative humidity of 33%.

Rainfall

In Greybull, Wyoming, during August, the rain falls for 7.8 days and regularly aggregates up to 0.47" (12mm) of precipitation. Throughout the year, in Greybull, there are 103.2 rainfall days, and 5.71" (145mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In Greybull, Wyoming, the average length of the day is 14h.

Sunshine

Months with the most sunshine in Greybull are June through August, with an average of 11.9h of sunshine.

UV index

Months with the highest UV index in Greybull, Wyoming, are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 6 in August transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the least humid month in Greybull?

Months with the lowest humidity in Greybull, Wyoming, are July and August, with an average relative humidity of 33%.

What is the average humidity in August in Greybull?

In Greybull, the average relative humidity in August is 33%.

How much does it rain in Greybull in August?

In Greybull, in August, it is raining for 7.8 days, with typically 0.47" (12mm) of accumulated precipitation.

When it does not snow in Greybull?

June through September are months without snowfall.

How many hours of daylight does Greybull have in August?

In Greybull, Wyoming, the average length of the day in August is 14h.

What are the months with the most sunshine in Greybull?

June through August, with an average of 11.9h of sunshine, are months with the most sunshine in Greybull, Wyoming.

How long on average sun shines in August in Greybull?

In Greybull, the average sunshine in August is 11.9h.

What is the month with the highest UV index in Greybull?

Months with the highest UV index are June through August, with an average maximum UV index of 6.

How high is the UV index in August in Greybull?

The average daily maximum UV index in August in Greybull, Wyoming, is 6. A UV Index value of 6 to 7 symbolizes a high health threat from the exposure to the Sun's UV rays.

Average temperature in August
Greybull, WY

Average temperature in August - Greybull, WY
  • Average high temperature in August: 82.6°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (28.8°F).

  • Average low temperature in August: 61.7°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

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Average pressure in August
Greybull, WY

Average pressure in August - Greybull, WY
  • Average pressure in August: 29.93"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.87").

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Average wind speed in August
Greybull, WY

Average wind speed in August - Greybull, WY
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest months (with the lowest average wind speed) are January and August (6mph).

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Average humidity in August
Greybull, WY

Average humidity in August - Greybull, WY
  • Average humidity in August: 33%

The month with the highest relative humidity is January (78%).
Months with the lowest relative humidity are July and August (33%).

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Average rainfall in August
Greybull, WY

Average rainfall in August - Greybull, WY
  • Average rainfall in August: 0.47"

The wettest month (with the highest rainfall) is May (0.87").
The driest month (with the least rainfall) is December (0.2").

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Average rainfall days in August
Greybull, WY

Average rainfall days in August - Greybull, WY
  • Average rainfall days in August: 7.8 days

The month with the highest number of rainy days is May (12.6 days).
The month with the least rainy days is December (6.5 days).

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Average snowfall in August
Greybull, WY

Average snowfall in August - Greybull, WY
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.52").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Greybull, WY

Average snowfall days in August - Greybull, WY
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (9.8 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight in August /
Average sunshine in August
Greybull, WY

Average daylight in August / Average sunshine in August - Greybull, WY
  • Average daylight in August: 14h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in August: 11.9h

Months with the most sunshine are June, July and August (Average sunshine: 11.9h).
The month with the least sunshine is January (Average sunshine: 6.7h).

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Average sunshine days in August
Greybull, WY

Average sunshine days in August - Greybull, WY
  • Average sunshine days in August: 14.8 days

The month with the most sunshine days is December (20.9 days).
Months with the least sunshine days are April and June (12.5 days).

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Average UV index in August
Greybull, WY

Average UV index in August - Greybull, WY
  • Average UV index in August: 6

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in August
Greybull, WY

Average cloud cover in August - Greybull, WY
  • Average cloud cover in August: 12

The month with the most cloud cover is February (Cloud cover 28).
Months with the least cloud cover are July and August (Cloud cover 12).

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Average visibility in August
Greybull, WY

Average visibility in August - Greybull, WY
  • Average visibility in August: 6mi

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

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