August weather forecast
Roy, UT

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Weather in August

August shadows the peak heat of July but sustains the summer warmth, encouraging continued outdoor activities. Despite some cooling, the atmosphere remains balmy, with temperatures maintaining their place in the 80s. However, increased cloud coverage starts animating the skies, hinting at the approaching autumn season. August still resonates with the vibrancy of summer as locals make the most of the remaining sun-soaked hours.

Temperature

The introduction of August in Roy notes a subtle temperature variation to a still moderately hot 81.9°F (27.7°C) from July's 83.8°F (28.8°C). In Roy, August nights witness a remarkable decline from the day's zenith to a mild 60.1°F (15.6°C).

Humidity

In August, the average relative humidity is 38%.

Rainfall

In Roy, in August, it is raining for 6.3 days, with typically 0.47" (12mm) of accumulated precipitation. In Roy, during the entire year, the rain falls for 91.6 days and collects up to 11.06" (281mm) of precipitation.

Snowfall

June through August are months without snowfall.

Daylight

The average length of the day in August is 13h and 46min.
On the first day of August, sunrise is at 6:24 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 8:01 pm MDT.

Sunshine

The months with the most sunshine are June through August, with an average of 11.9h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Roy. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 6 during August translates into the following guidance:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

What is the temperature in August in Roy?

The high-temperature, in August, in Roy, records 81.9°F (27.7°C), while the low-temperature is 60.1°F (15.6°C).

What is the average humidity in August in Roy?

The average relative humidity in August in Roy, Utah, is 38%.

How much does it rain in Roy in August?

In Roy, in August, it is raining for 6.3 days, with typically 0.47" (12mm) of accumulated precipitation.

When it does not snow in Roy?

In Roy, snow does not fall in June through August.

Does it snow in Roy in August?

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

How many hours of daylight does Roy have in August?

In August, the average day length is 13h and 46min.

When is the sunrise / sunset in August in Roy?

On the first day of August in Roy, sunrise is at 6:24 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 8:01 pm MDT.

What are the months with the most sunshine in Roy?

The months with the most sunshine in Roy, Utah, are June through August, with an average of 11.9h of sunshine.

How long on average sun shines in August in Roy?

In August, the average sunshine duration in Roy is 11.9h.

What is the month with the highest UV index in Roy?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Roy.

What is the UV index intensity in August in Roy?

In August, the average daily maximum UV index in Roy is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe 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
Roy, UT

Average temperature in August - Roy, UT
  • Average high temperature in August: 81.9°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in August: 60.1°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in August
Roy, UT

Average pressure in August - Roy, UT
  • Average pressure in August: 29.92"Hg

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in August
Roy, UT

Average wind speed in August - Roy, UT
  • Average wind speed in August: 6.2mph

The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).

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Average humidity in August
Roy, UT

Average humidity in August - Roy, UT
  • Average humidity in August: 38%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is July (37%).

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Average rainfall in August
Roy, UT

Average rainfall in August - Roy, UT
  • Average rainfall in August: 0.47"

The wettest month (with the highest rainfall) is April (1.26").
The driest month (with the least rainfall) is July (0.43").

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Average rainfall days in August
Roy, UT

Average rainfall days in August - Roy, UT
  • Average rainfall days in August: 6.3 days

The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is January (4.6 days).

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Average snowfall in August
Roy, UT

Average snowfall in August - Roy, UT
  • Average snowfall in August: 0"

The month with the highest snowfall is January (6.89").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in August
Roy, UT

Average snowfall days in August - Roy, UT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (8.8 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
Roy, UT

Average daylight in August / Average sunshine in August - Roy, UT
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 11h and 5min

The months with the most sunshine are June, July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).

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Average sunshine days in August
Roy, UT

Average sunshine days in August - Roy, UT
  • Average sunshine days in August: 18.2 days

The months with the most sunshine days are October and November (21.6 days).
The month with the least sunshine days is April (14.7 days).

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Average UV index in August
Roy, UT

Average UV index in August - Roy, UT
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in August
Roy, UT

Average cloud cover in August - Roy, UT
  • Average cloud cover in August: 10

The months with the most cloud cover are January and February (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 10).

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Average visibility in August
Roy, UT

Average visibility in August - Roy, UT
  • Average visibility in August: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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Roy, Utah, USA

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