August weather forecast
Shelley, ID

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Weather in August

In August, Shelley, Idaho continues to relish the summer heat, though the temperature subtly drops, hinting at the coming autumn. While the rainfall marginally increases from July, the total sunlight hours start to decrease. Daylight hours also begin to drop, yet the city still enjoys a fair amount of sunshine. The mild temperature swings coupled with breezy winds add to the overall comfortable condition of August. It's an appealing time for those who prefer a milder summer experience.

Temperature

August's arrival shows an average high-temperature of a still moderately hot 83.3°F (28.5°C), hardly different from the previous month. Significant dips from daytime highs mark the August nights in Shelley, with a consistent average temperature of 55°F (12.8°C).

Humidity

The months with the lowest humidity are July and August, with an average relative humidity of 36%.

Rainfall

In Shelley, in August, during 9.3 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. In Shelley, Idaho, during the entire year, the rain falls for 124.6 days and collects up to 12.24" (311mm) of precipitation.

Snowfall

June through August are months without snowfall in Shelley.

Daylight

In August, the average length of the day is 13h and 55min.
On the first day of August in Shelley, sunrise is at 6:19 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 8:04 pm MDT.

Sunshine

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

UV index

The average daily maximum UV index in August in Shelley is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The UV index of 5 in August translates into these instructions:
Make use of precautions - Suggestions to resist sunburn are communicated. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

How hot is August in Shelley?

August temperatures in Shelley, Idaho, vary between a high-temperature of 83.3°F (28.5°C) and a low-temperature of 55°F (12.8°C).

What are the least humid months in Shelley?

July and August, with an average relative humidity of 36%, are the least humid months.

What is the average humidity in August in Shelley?

The average relative humidity in August in Shelley is 36%.

How many days does it rain in August in Shelley?

In Shelley, in August, during 9.3 rainfall days, 0.83" (21mm) of precipitation is typically accumulated.

When it does not snow in Shelley?

In Shelley, Idaho, snow does not fall in June through August.

Does it snow in Shelley in August?

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

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

In August, the average day length in Shelley, Idaho, is 13h and 55min.

When are sunrise and sunset in August in Shelley?

On the first day of August, sunrise is at 6:19 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 8:04 pm MDT.

How many hours of sunshine does Shelley have in August?

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

What is the UV index intensity in August in Shelley?

In Shelley, Idaho, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Shelley, ID

Average temperature in August - Shelley, ID
  • Average high temperature in August: 83.3°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is December (27.9°F).

  • Average low temperature in August: 55°F

The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).

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Average pressure in August
Shelley, ID

Average pressure in August - Shelley, ID
  • Average pressure in August: 29.95"Hg

The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in August
Shelley, ID

Average wind speed in August - Shelley, ID
  • Average wind speed in August: 7.1mph

The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest month (with the lowest average wind speed) is January (6mph).

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Average humidity in August
Shelley, ID

Average humidity in August - Shelley, ID
  • Average humidity in August: 36%

The month with the highest relative humidity is January (90%).
The months with the lowest relative humidity are July and August (36%).

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Average rainfall in August
Shelley, ID

Average rainfall in August - Shelley, ID
  • Average rainfall in August: 0.83"

The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is July (0.51").

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Average rainfall days in August
Shelley, ID

Average rainfall days in August - Shelley, ID
  • Average rainfall days in August: 9.3 days

The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.1 days).

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Average snowfall in August
Shelley, ID

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

The month with the highest snowfall is January (7.44").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in August
Shelley, ID

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

The month with the highest number of snowfall days is December (16.7 days).
The 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
Shelley, ID

Average daylight in August / Average sunshine in August - Shelley, ID
  • 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 5min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).

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Average sunshine days in August
Shelley, ID

Average sunshine days in August - Shelley, ID
  • Average sunshine days in August: 16.9 days

The month with the most sunshine days is October (18.9 days).
The month with the least sunshine days is March (10 days).

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Average UV index in August
Shelley, ID

Average UV index in August - Shelley, ID
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in August
Shelley, ID

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

The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 11).

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Average visibility in August
Shelley, ID

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

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

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Shelley, Idaho, USA

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