August weather forecast
Sumatra, MT

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Weather in August

The last month of the summer, August, is also a moderately hot month in Sumatra, Montana, with an average temperature fluctuating between 84.6°F (29.2°C) and 63.1°F (17.3°C).

Temperature

Sumatra, Montana, registers an average high-temperature of a moderately hot 84.6°F (29.2°C) with the arrival of August, showing minor deviation from the preceding month. Throughout August in Sumatra, a steady low-temperature average of 63.1°F (17.3°C) is noted.

Humidity

The least humid month in Sumatra is August, with an average relative humidity of 38%.

Rainfall

In Sumatra, Montana, in August, it is raining for 10.4 days, with typically 0.98" (25mm) of accumulated precipitation. Throughout the year, there are 99.5 rainfall days, and 11.06" (281mm) of precipitation is accumulated.

Snowfall

In Sumatra, Montana, snow does not fall in June through August.

Daylight

In Sumatra, the average length of the day in August is 14h and 8min.
On the first day of August in Sumatra, sunrise is at 5:51 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:50 pm MDT.

Sunshine

In August, the average sunshine in Sumatra is 11.7h.

UV index

The average daily maximum UV index in August in Sumatra is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 6 during August translates into the following guidance:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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Frequently asked questions

Is it hot in Sumatra during August?

In August, in Sumatra, the average high-temperature is 84.6°F (29.2°C), and the average low-temperature is 63.1°F (17.3°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, in July is estimated at 86°F (30°C).

What is the least humid month in Sumatra?

The least humid month in Sumatra, Montana, is August, with an average relative humidity of 38%.

What is the average humidity in August in Sumatra?

In Sumatra, the average relative humidity in August is 38%.

How many days does it rain in August in Sumatra?

In Sumatra, during August, the rain falls for 10.4 days and regularly aggregates up to 0.98" (25mm) of precipitation.

When it does not snow in Sumatra?

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

Does it snow in Sumatra in August?

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

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

The average day length in August in Sumatra is 14h and 8min.

When is the sunrise / sunset in August in Sumatra?

In August, on the first day of the month, sunrise is at 5:51 am and sunset at 8:41 pm. On the last day of the month, in Sumatra, Montana, sunrise is at 6:29 am and sunset at 7:50 pm MDT.

How many hours of sunshine does Sumatra have in August?

In August, the average sunshine duration in Sumatra is 11.7h.

What is the UV index intensity in August in Sumatra?

In August, the average daily maximum UV index in Sumatra, Montana, is 6. A UV Index estimate of 6 to 7 represents 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
Sumatra, MT

Average temperature in August - Sumatra, MT
  • Average high temperature in August: 84.6°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The months with the lowest average high temperature are January and December (30.9°F).

  • Average low temperature in August: 63.1°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).

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Average pressure in August
Sumatra, MT

Average pressure in August - Sumatra, MT
  • Average pressure in August: 29.89"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in August
Sumatra, MT

Average wind speed in August - Sumatra, MT
  • Average wind speed in August: 8.3mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is July (8.2mph).

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Average humidity in August
Sumatra, MT

Average humidity in August - Sumatra, MT
  • Average humidity in August: 38%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (38%).

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Average rainfall in August
Sumatra, MT

Average rainfall in August - Sumatra, MT
  • Average rainfall in August: 0.98"

The wettest month (with the highest rainfall) is May (1.81").
The driest months (with the least rainfall) are January, November and December (0.47").

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Average rainfall days in August
Sumatra, MT

Average rainfall days in August - Sumatra, MT
  • Average rainfall days in August: 10.4 days

The month with the highest number of rainy days is May (13.7 days).
The month with the least rainy days is February (3.8 days).

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Average snowfall in August
Sumatra, MT

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

The month with the highest snowfall is February (3.74").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in August
Sumatra, MT

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

The month with the highest number of snowfall days is February (10.3 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
Sumatra, MT

Average daylight in August / Average sunshine in August - Sumatra, MT
  • Average daylight in August: 14h and 1min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in August: 11h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 18min).

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Average sunshine days in August
Sumatra, MT

Average sunshine days in August - Sumatra, MT
  • Average sunshine days in August: 16.5 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is April (14.2 days).

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Average UV index in August
Sumatra, MT

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

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in August
Sumatra, MT

Average cloud cover in August - Sumatra, MT
  • Average cloud cover in August: 15

The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 15).

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Average visibility in August
Sumatra, MT

Average visibility in August - Sumatra, MT
  • Average visibility in August: 6mi

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

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Sumatra, Montana, USA

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