August weather forecast
Alta, WY

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Weather in August

The last month of the summer, August, is another warm month in Alta, Wyoming, with temperature in the range of an average low of 46.8°F (8.2°C) and an average high of 74.1°F (23.4°C).

Temperature

With August's arrival, Alta's weather records an average high-temperature of a still warm 74.1°F (23.4°C), marking little difference from July's 75.4°F (24.1°C). In Alta, the August nights descend to a significantly cooler average of 46.8°F (8.2°C) compared to daytime highs.

Humidity

With an average relative humidity of 47%, August is the least humid month.

Rainfall

In August, the rain falls for 9.6 days. Throughout August, 0.98" (25mm) of precipitation is accumulated. Throughout the year, in Alta, there are 96.6 rainfall days, and 32.95" (837mm) of precipitation is accumulated.

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 0.04" (1mm) of snow. In Alta, during the entire year, snow falls for 160.8 days and aggregates up to 200.16" (5084mm) of snow.

Daylight

In August, the average length of the day is 13h and 56min.
On the first day of the month, sunrise is at 6:13 am and sunset at 8:46 pm. On the last day of August, sunrise is at 6:47 am and sunset at 8:00 pm MDT.

Sunshine

In August, the average sunshine is 11.6h.

UV index

In August, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: A typical high UV index of 4 in August suggests the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To cut down UV radiation exposure by about half, sport a wide-brim hat. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Updated: Jul 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August in Alta?

In Alta, in August, the average high-temperature is 74.1°F (23.4°C), and the average low-temperature is 46.8°F (8.2°C).

What is the least humid month?

August is the least humid month, with an average relative humidity of 47%.

What is the average humidity in August?

In August, the average relative humidity is 47%.

How many days does it rain in August?

In August, the rain falls for 9.6 days. Throughout August, 0.98" (25mm) of precipitation is accumulated.

When does it start to snow?

August is the first month it typically snows. Throughout August, in the average 0.3 snowfall days, it receives 0.04" (1mm) of snow.

What is the average length of the day in August?

The average day length in August is 13h and 56min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 6:13 am and sunset at 8:46 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 8:00 pm MDT.

How long on average sun shines in August?

The average sunshine duration in August is 11.6h.

What is the UV index intensity in August in Alta?

The average daily maximum UV index in August is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
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
Alta, WY

Average temperature in August - Alta, WY
  • Average high temperature in August: 74.1°F

The warmest month (with the highest average high temperature) is July (75.4°F).
The month with the lowest average high temperature is December (23.2°F).

  • Average low temperature in August: 46.8°F

The month with the highest average low temperature is July (46.9°F).
The coldest month (with the lowest average low temperature) is December (7.7°F).

Average pressure in August
Alta, WY

Average pressure in August - Alta, WY
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Alta, WY

Average wind speed in August - Alta, WY
  • Average wind speed in August: 5.9mph

The windiest month (with the highest average wind speed) is June (6.2mph).
The calmest months (with the lowest average wind speed) are January and December (4.8mph).

Average humidity in August
Alta, WY

Average humidity in August - Alta, WY
  • Average humidity in August: 47%

The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (47%).

Average rainfall in August
Alta, WY

Average rainfall in August - Alta, WY
  • Average rainfall in August: 0.98"

The wettest month (with the highest rainfall) is February (4.13").
The driest month (with the least rainfall) is July (0.91").

Average rainfall days in August
Alta, WY

Average rainfall days in August - Alta, WY
  • Average rainfall days in August: 9.6 days

The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (3 days).

Average snowfall in August
Alta, WY

Average snowfall in August - Alta, WY
  • Average snowfall in August: 0.04"

The month with the highest snowfall is February (34.33").
The month with the least snowfall is July (0").

Average snowfall days in August
Alta, WY

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

The month with the highest number of snowfall days is March (23.6 days).
The month with the least snowfall days is July (0.1 days).

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

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

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in August: 11h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).

Average sunshine days in August
Alta, WY

Average sunshine days in August - Alta, WY
  • Average sunshine days in August: 18.1 days

The month with the most sunshine days is July (20.3 days).
The month with the least sunshine days is April (6.2 days).

Average UV index in August
Alta, WY

Average UV index in August - Alta, 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, October, November and December (UV index 1).

Average cloud cover in August
Alta, WY

Average cloud cover in August - Alta, WY
  • Average cloud cover in August: 14

The month with the most cloud cover is February (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 14).

Average visibility in August
Alta, WY

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

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (3mi).

Alta, Wyoming, USA

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