August weather forecast
Shell, WY

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Weather in August

August, the last month of the summer in Shell, is another comfortable month, with an average temperature ranging between max 67.5°F (19.7°C) and min 47.5°F (8.6°C).

Temperature

Shell experiences a transition to an enjoyable 67.5°F (19.7°C) in average high-temperatures with the arrival of August, not greatly differing from July's 69.4°F (20.8°C). Throughout August, the temperature tends to fall to a consistent average low of 47.5°F (8.6°C).

Humidity

August is the least humid month, with an average relative humidity of 51%.

Rainfall

In Shell, during August, the rain falls for 15.7 days and regularly aggregates up to 1.97" (50mm) of precipitation. In Shell, during the entire year, the rain falls for 94.3 days and collects up to 19.13" (486mm) of precipitation.

Snowfall

Months with snowfall are January through June, August through December. August is the first month it typically snows. Throughout August, in the average 0.3 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 113.3 snowfall days, and 89.02" (2261mm) of snow is accumulated.

Daylight

In August, the average length of the day is 13h and 59min.
On the first day of the month, sunrise is at 5:58 am and sunset at 8:36 pm. On the last day of August, sunrise is at 6:33 am and sunset at 7:48 pm MDT.

Sunshine

In Shell, the average sunshine in August is 11.5h.

UV index

In August, the average daily maximum UV index in Shell is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: An average UV index of 4 in August transforms into this advice:
Undertake precautions - Obligation exists to protect against skin and eye damage. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

What are August temperatures in Shell?

The high-temperature, in August, in Shell, is 67.5°F (19.7°C), while the low-temperature averages to 47.5°F (8.6°C).

What is the least humid month in Shell?

August is the least humid month in Shell, Wyoming, with an average relative humidity of 51%.

What is the average humidity in August in Shell?

The average relative humidity in August in Shell, Wyoming, is 51%.

How many days does it rain in August in Shell?

In Shell, Wyoming, in August, during 15.7 rainfall days, 1.97" (50mm) of precipitation is typically accumulated.

When does it start snowing in Shell?

August is the first month it typically snows. Throughout August, in the average 0.3 snowfall days, it receives 0.12" (3mm) of snow.

What is the average length of the day in August in Shell?

The average day length in August in Shell is 13h and 59min.

When are sunrise and sunset in August in Shell?

In August, on the first day of the month, sunrise is at 5:58 am and sunset at 8:36 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 7:48 pm MDT.

How many hours of sunshine does Shell have in August?

The average sunshine duration in August in Shell is 11.5h.

How high is the UV index in August in Shell?

The average daily maximum UV index in August in Shell, Wyoming, is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Shell, WY

Average temperature in August - Shell, WY
  • Average high temperature in August: 67.5°F

The warmest month (with the highest average high temperature) is July (69.4°F).
The month with the lowest average high temperature is December (20.8°F).

  • Average low temperature in August: 47.5°F

The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is December (2.3°F).

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Average pressure in August
Shell, WY

Average pressure in August - Shell, WY
  • Average pressure in August: 29.92"Hg

The months with the highest atmospheric pressure are January and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in August
Shell, WY

Average wind speed in August - Shell, WY
  • Average wind speed in August: 4.8mph

The windiest month (with the highest average wind speed) is June (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in August
Shell, WY

Average humidity in August - Shell, WY
  • Average humidity in August: 51%

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (51%).

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Average rainfall in August
Shell, WY

Average rainfall in August - Shell, WY
  • Average rainfall in August: 1.97"

The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is December (0.75").

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Average rainfall days in August
Shell, WY

Average rainfall days in August - Shell, WY
  • Average rainfall days in August: 15.7 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is November (2.3 days).

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Average snowfall in August
Shell, WY

Average snowfall in August - Shell, WY
  • Average snowfall in August: 0.12"

The month with the highest snowfall is May (19.33").
The month with the least snowfall is July (0").

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Average snowfall days in August
Shell, WY

Average snowfall days in August - Shell, WY
  • Average snowfall days in August: 0.3 days

The month with the highest number of snowfall days is January (15.8 days).
The month with the least snowfall days is July (0 days).

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

Average daylight in August / Average sunshine in August - Shell, WY
  • Average daylight in August: 14h and 0min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in August: 11h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in August
Shell, WY

Average sunshine days in August - Shell, WY
  • Average sunshine days in August: 10.1 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (8.6 days).

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Average UV index in August
Shell, WY

Average UV index in August - Shell, WY
  • Average UV index in August: 4

The month with the highest UV index is July (UV index 5).
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
Shell, WY

Average cloud cover in August - Shell, WY
  • Average cloud cover in August: 18

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 16).

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Average visibility in August
Shell, WY

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

The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).

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Shell, Wyoming, USA

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