August weather forecast
Mammoth, MT

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Weather in August

The last month of the summer, August, is also a moderately hot month in Mammoth, Montana, with temperature in the range of an average high of 78.3°F (25.7°C) and an average low of 47.1°F (8.4°C).

Temperature

The advent of August observes an average high-temperature of a still moderately hot 78.3°F (25.7°C), nearly identical to July's 79.5°F (26.4°C). August nights in Mammoth show a substantial disparity from the daytime peak with an average low-temperature of 47.1°F (8.4°C).

Humidity

July and August, with an average relative humidity of 46%, are the least humid months in Mammoth.

Rainfall

In Mammoth, in August, during 8.6 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Mammoth, during the entire year, the rain falls for 158 days and collects up to 12.2" (310mm) of precipitation.

Snowfall

May through September are months without snowfall in Mammoth.

Daylight

The average length of the day in August is 14h and 4min.
On the first day of August in Mammoth, sunrise is at 6:12 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 8:07 pm MDT.

Sunshine

In August, the average sunshine is 11.7h.

UV index

In Mammoth, the average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: During August, 4 as the daily maximum UV index converts into the following advice:
Undertake precautions - It is suggested to shield oneself from sunburn. To guard against the harmful effects of the Sun, minimize exposure during midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Frequently asked questions

What is the temperature in August in Mammoth?

In August, the average high-temperature and low-temperature in Mammoth, Montana, are 78.3°F (25.7°C) and 47.1°F (8.4°C) respectively.

What are the least humid months in Mammoth?

July and August, with an average relative humidity of 46%, are the least humid months.

What is the average humidity in August in Mammoth?

In August, the average relative humidity in Mammoth is 46%.

How much does it rain in Mammoth in August?

In August, the rain falls for 8.6 days. Throughout August, 0.63" (16mm) of precipitation is accumulated.

When it does not snow in Mammoth?

May through September are months without snowfall.

How many hours of daylight does Mammoth have in August?

The average day length in August in Mammoth is 14h and 4min.

What time are sunrise and sunset in August in Mammoth?

In August, on the first day of the month, sunrise is at 6:12 am and sunset at 8:56 pm. On the last day of the month, in Mammoth, Montana, sunrise is at 6:49 am and sunset at 8:07 pm MDT.

How long on average sun shines in August in Mammoth?

The average sunshine duration in August is 11.7h.

How high is the UV index in August in Mammoth?

In August, the average daily maximum UV index in Mammoth, Montana, is 4. A UV Index estimate of 3 to 5 represents a medium 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
Mammoth, MT

Average temperature in August - Mammoth, MT
  • Average high temperature in August: 78.3°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is December (26.4°F).

  • Average low temperature in August: 47.1°F

The month with the highest average low temperature is July (47.7°F).
The coldest month (with the lowest average low temperature) is December (11.3°F).

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Average pressure in August
Mammoth, MT

Average pressure in August - Mammoth, MT
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in August
Mammoth, MT

Average wind speed in August - Mammoth, MT
  • Average wind speed in August: 4.6mph

The windiest month (with the highest average wind speed) is November (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

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Average humidity in August
Mammoth, MT

Average humidity in August - Mammoth, MT
  • Average humidity in August: 46%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (46%).

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Average rainfall in August
Mammoth, MT

Average rainfall in August - Mammoth, MT
  • Average rainfall in August: 0.63"

The wettest month (with the highest rainfall) is May (1.85").
The driest month (with the least rainfall) is January (0.59").

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Average rainfall days in August
Mammoth, MT

Average rainfall days in August - Mammoth, MT
  • Average rainfall days in August: 8.6 days

The month with the highest number of rainy days is April (18.6 days).
The month with the least rainy days is August (8.6 days).

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Average snowfall in August
Mammoth, MT

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

The month with the highest snowfall is February (1.81").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Mammoth, MT

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

The month with the highest number of snowfall days is February (6.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

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

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

  • Average sunshine in August: 11h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).

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Average sunshine days in August
Mammoth, MT

Average sunshine days in August - Mammoth, MT
  • Average sunshine days in August: 17.3 days

The month with the most sunshine days is July (17.8 days).
The month with the least sunshine days is April (7.8 days).

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Average UV index in August
Mammoth, MT

Average UV index in August - Mammoth, MT
  • Average UV index in August: 4

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average cloud cover in August
Mammoth, MT

Average cloud cover in August - Mammoth, MT
  • Average cloud cover in August: 14

The month with the most cloud cover is February (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 14).

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Average visibility in August
Mammoth, MT

Average visibility in August - Mammoth, MT
  • 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, February and December (5mi).

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Mammoth, Montana, USA

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