August weather forecast
Jackson, WY

A calm and clear river and vast green fields approaching the iconic white mountains within the Grand Teton National Park in Jackson, Wyoming
A calm and clear river and vast green fields approaching the iconic white mountains within the Grand Teton National Park in Jackson, Wyoming

Weather in August

August, the last month of the summer in Jackson, is also an agreeable month, with an average temperature fluctuating between 43.3°F (6.3°C) and 72.1°F (22.3°C).

Temperature

In Jackson, Wyoming, the average high-temperature in August is relatively the same as in July - an agreeable 72.1°F (22.3°C). The average low-temperature, in August, is 43.3°F (6.3°C).

Humidity

August is the least humid month, with an average relative humidity of 50%.

Rainfall

The month with the least rainfall in Jackson is August, when the rain falls for 11.8 days and typically collects 1.34" (34mm) of precipitation.

Snowfall

Months with snowfall are January through December. August is the month with the least snowfall in Jackson, Wyoming. Snow falls for 0.5 days and accumulates 0.12" (3mm) of snow.

Daylight

In Jackson, the average length of the day in August is 13h and 55min.
On the first day of the month, sunrise is at 6:13 am and sunset at 8:45 pm. On the last day of August, sunrise is at 6:46 am and sunset at 8:00 pm MDT.

Sunshine

In August, the average sunshine in Jackson is 11.4h.

UV index

In August, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In August, the average maximum UV index of 4 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the least humid month in Jackson?

With an average relative humidity of 50%, August is the least humid month in Jackson.

What is the average humidity in August in Jackson?

The average relative humidity in August in Jackson is 50%.

What is the driest month in Jackson?

August is the month with the least rainfall in Jackson, Wyoming. Rain falls for 11.8 days and accumulates 1.34" (34mm) of precipitation.

How much does it rain in Jackson in August?

In Jackson, Wyoming, during August, the rain falls for 11.8 days and regularly aggregates up to 1.34" (34mm) of precipitation.

When it does not snow in Jackson?

The month with the least snowfall is August, when snow falls for 0.5 days and typically aggregates up to 0.12" (3mm) of snow.

How many days does it snow in August in Jackson?

In August, in Jackson, Wyoming, it is snowing for 0.5 days. Throughout August, 0.12" (3mm) of snow is accumulated.

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

The average day length in August in Jackson is 13h and 55min.

What time are sunrise and sunset in August in Jackson?

On the first day of August in Jackson, Wyoming, sunrise is at 6:13 am and sunset at 8:45 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 8:00 pm MDT.

How long on average sun shines in August in Jackson?

The average sunshine duration in August is 11.4h.

What is the UV index intensity in August in Jackson?

The average daily maximum UV index in August in Jackson is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Jackson, WY

Average temperature in August - Jackson, WY
  • Average high temperature in August: 72.1°F

The warmest month (with the highest average high temperature) is July (73.4°F).
The month with the lowest average high temperature is December (21.9°F).

  • Average low temperature in August: 43.3°F

The month with the highest average low temperature is July (43.5°F).
The coldest month (with the lowest average low temperature) is January (4.8°F).

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Average pressure in August
Jackson, WY

Average pressure in August - Jackson, 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).

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Average wind speed in August
Jackson, WY

Average wind speed in August - Jackson, WY
  • Average wind speed in August: 5.2mph

The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is December (4.3mph).

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Average humidity in August
Jackson, WY

Average humidity in August - Jackson, WY
  • Average humidity in August: 50%

The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (50%).

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Average rainfall in August
Jackson, WY

Average rainfall in August - Jackson, WY
  • Average rainfall in August: 1.34"

The wettest month (with the highest rainfall) is February (3.54").
The driest month (with the least rainfall) is August (1.34").

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Average rainfall days in August
Jackson, WY

Average rainfall days in August - Jackson, WY
  • Average rainfall days in August: 11.8 days

The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (2.9 days).

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Average snowfall in August
Jackson, WY

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

The month with the highest snowfall is February (29.33").
The month with the least snowfall is August (0.12").

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Average snowfall days in August
Jackson, WY

Average snowfall days in August - Jackson, WY
  • Average snowfall days in August: 0.5 days

The month with the highest number of snowfall days is March (24.8 days).
The month with the least snowfall days is July (0.4 days).

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

Average daylight in August / Average sunshine in August - Jackson, WY
  • Average daylight in August: 13h and 55min

The month with the longest days is June (Average daylight: 15h and 22min).
The month with the shortest days is December (Average daylight: 9h and 1min).

  • Average sunshine in August: 11h and 24min

The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).

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Average sunshine days in August
Jackson, WY

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

The month with the most sunshine days is July (15.6 days).
The month with the least sunshine days is April (3.8 days).

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Average UV index in August
Jackson, WY

Average UV index in August - Jackson, 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 1).

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Average cloud cover in August
Jackson, WY

Average cloud cover in August - Jackson, WY
  • Average cloud cover in August: 16

The month with the most cloud cover is February (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 16).

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Average visibility in August
Jackson, WY

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

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

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