August weather forecast
Ketchum, ID

Weather in August

August, the last month of the summer in Ketchum, is another pleasant month, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 73.2°F (22.9°C).

Temperature

In Ketchum, the average high-temperature in August is practically the same as in July - an agreeable 73.2°F (22.9°C). The average low-temperature, in Ketchum, is 50.5°F (10.3°C).

Humidity

August is the least humid month, with an average relative humidity of 37%.

Rainfall

In Ketchum, in August, during 6.5 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, in Ketchum, Idaho, there are 107.7 rainfall days, and 15.63" (397mm) of precipitation is accumulated.

Snowfall

In Ketchum, Idaho, snow does not fall in July and August.

Daylight

In August, the average length of the day in Ketchum is 13h and 56min.
On the first day of the month, sunrise is at 6:26 am and sunset at 9:00 pm. On the last day of August, in Ketchum, sunrise is at 7:00 am and sunset at 8:15 pm MDT.

Sunshine

In August, the average sunshine in Ketchum is 11.8h.

UV index

In August, the average daily maximum UV index in Ketchum, Idaho, 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 - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in August in Ketchum?

In August, in Ketchum, the average high-temperature is 73.2°F (22.9°C), and the average low-temperature is 50.5°F (10.3°C).

What is the least humid month in Ketchum?

August is the least humid month in Ketchum, with an average relative humidity of 37%.

What is the average humidity in August in Ketchum?

The average relative humidity in August in Ketchum is 37%.

How much does it rain in Ketchum in August?

In Ketchum, Idaho, in August, it is raining for 6.5 days, with typically 0.51" (13mm) of accumulated precipitation.

When it does not snow in Ketchum?

July and August are months without snowfall.

Does it snow in Ketchum in August?

In Ketchum, Idaho, in August, it doesn't snow. In September, it regularly snows.

How many hours of daylight does Ketchum have in August?

In August, the average day length is 13h and 56min.

When are sunrise and sunset in August in Ketchum?

On the first day of August, sunrise is at 6:26 am and sunset at 9:00 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 8:15 pm MDT.

How long on average sun shines in August in Ketchum?

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

How high is the UV index in August in Ketchum?

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

Average temperature in August
Ketchum, ID

Average temperature in August - Ketchum, ID
  • Average high temperature in August: 73.2°F

The warmest month (with the highest average high temperature) is July (74.1°F).
The month with the lowest average high temperature is December (25°F).

  • Average low temperature in August: 50.5°F

The months with the highest average low temperature are July and August (50.5°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).

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Average pressure in August
Ketchum, ID

Average pressure in August - Ketchum, ID
  • Average pressure in August: 29.92"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in August
Ketchum, ID

Average wind speed in August - Ketchum, ID
  • Average wind speed in August: 5.9mph

The windiest month (with the highest average wind speed) is July (6.3mph).
The calmest month (with the lowest average wind speed) is January (4.5mph).

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Average humidity in August
Ketchum, ID

Average humidity in August - Ketchum, ID
  • Average humidity in August: 37%

The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (37%).

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Average rainfall in August
Ketchum, ID

Average rainfall in August - Ketchum, ID
  • Average rainfall in August: 0.51"

The wettest month (with the highest rainfall) is March (2.01").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days in August
Ketchum, ID

Average rainfall days in August - Ketchum, ID
  • Average rainfall days in August: 6.5 days

The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is July (5.9 days).

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Average snowfall in August
Ketchum, ID

Average snowfall in August - Ketchum, ID
  • Average snowfall in August: 0"

The month with the highest snowfall is February (15").
The months with the least snowfall are July and August (0").

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Average snowfall days in August
Ketchum, ID

Average snowfall days in August - Ketchum, ID
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is March (16 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
Ketchum, ID

Average daylight in August / Average sunshine in August - Ketchum, ID
  • Average daylight in August: 13h and 56min

The month with the longest days is June (Average daylight: 15h and 23min).
The month with the shortest days is December (Average daylight: 8h and 59min).

  • Average sunshine in August: 11h and 48min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).

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Average sunshine days in August
Ketchum, ID

Average sunshine days in August - Ketchum, ID
  • Average sunshine days in August: 20.6 days

The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is April (11.1 days).

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Average UV index in August
Ketchum, ID

Average UV index in August - Ketchum, ID
  • Average UV index in August: 4

The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is February (UV index 1).

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Average cloud cover in August
Ketchum, ID

Average cloud cover in August - Ketchum, ID
  • Average cloud cover in August: 11

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 10).

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Average visibility in August
Ketchum, ID

Average visibility in August - Ketchum, ID
  • Average visibility in August: 6mi

The months with the highest visibility are April, 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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