August weather forecast
Valleytown, MT

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Weather in August

August, the last month of the summer in Valleytown, is another warm month, with an average temperature fluctuating between 82.8°F (28.2°C) and 62.1°F (16.7°C).

Temperature

August's weather records an average high-temperature of a still moderately hot 82.8°F (28.2°C), showing little deviation from July. August nights are marked by an average low-temperature of 62.1°F (16.7°C).

Heat index

The heat index in August is computed to be 82.4°F (28°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.
In the scope of the heat index, its values resonate with shade and light wind conditions. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.

Humidity

With an average relative humidity of 41%, August is the least humid month.

Rainfall

In Valleytown, in August, during 9.2 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. Throughout the year, in Valleytown, there are 91.8 rainfall days, and 10.63" (270mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Valleytown.

Daylight

In Valleytown, the average length of the day in August is 14h and 17min.
On the first day of the month, sunrise is at 5:44 am and sunset at 8:46 pm. On the last day of August, sunrise is at 6:25 am and sunset at 7:52 pm MDT.

Sunshine

The average sunshine in August in Valleytown is 11.5h.

UV index

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 6 during August translates into these guidelines:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during August?

In August, in Valleytown, the average high-temperature is 82.8°F (28.2°C), and the average low-temperature is 62.1°F (16.7°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, is computed to be 82.4°F (28°C).

What is the least humid month?

The least humid month is August, with an average relative humidity of 41%.

What is the average humidity in August in Valleytown?

The average relative humidity in August is 41%.

How much does it rain in August?

In Valleytown, during August, the rain falls for 9.2 days and regularly aggregates up to 0.91" (23mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

What is the average length of the day in August?

In August, the average day length in Valleytown is 14h and 17min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 5:44 am and sunset at 8:46 pm. On the last day of the month, in Valleytown, sunrise is at 6:25 am and sunset at 7:52 pm MDT.

How long on average sun shines in August?

In Valleytown, the average sunshine duration in August is 11.5h.

How high is the UV index in August?

In Valleytown, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high health risk 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
Valleytown, MT

Average temperature in August - Valleytown, MT
  • Average high temperature in August: 82.8°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is February (24.4°F).

  • Average low temperature in August: 62.1°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is February (10°F).

Average pressure in August
Valleytown, MT

Average pressure in August - Valleytown, MT
  • Average pressure in August: 29.88"Hg

The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in August
Valleytown, MT

Average wind speed in August - Valleytown, MT
  • Average wind speed in August: 9.6mph

The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is February (8.3mph).

Average humidity in August
Valleytown, MT

Average humidity in August - Valleytown, MT
  • Average humidity in August: 41%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (41%).

Average rainfall in August
Valleytown, MT

Average rainfall in August - Valleytown, MT
  • Average rainfall in August: 0.91"

The wettest month (with the highest rainfall) is May (1.73").
The driest month (with the least rainfall) is February (0.43").

Average rainfall days in August
Valleytown, MT

Average rainfall days in August - Valleytown, MT
  • Average rainfall days in August: 9.2 days

The month with the highest number of rainy days is May (12.7 days).
The month with the least rainy days is February (3.3 days).

Average snowfall in August
Valleytown, MT

Average snowfall in August - Valleytown, MT
  • Average snowfall in August: 0"

The month with the highest snowfall is December (3.43").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Valleytown, MT

Average snowfall days in August - Valleytown, MT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in August /
Average sunshine in August
Valleytown, MT

Average daylight in August / Average sunshine in August - Valleytown, MT
  • Average daylight in August: 14h and 2min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in August: 11h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in August
Valleytown, MT

Average sunshine days in August - Valleytown, MT
  • Average sunshine days in August: 19.9 days

The month with the most sunshine days is October (21 days).
The month with the least sunshine days is April (15.4 days).

Average UV index in August
Valleytown, MT

Average UV index in August - Valleytown, MT
  • Average UV index in August: 6

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in August
Valleytown, MT

Average cloud cover in August - Valleytown, MT
  • Average cloud cover in August: 18

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 18).

Average visibility in August
Valleytown, MT

Average visibility in August - Valleytown, MT
  • 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).

Valleytown, Montana, USA

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