August weather forecast
Greycliff, MT

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Weather in August

The last month of the summer, August, is another warm month in Greycliff, Montana, with an average temperature ranging between min 52.9°F (11.6°C) and max 76.6°F (24.8°C).

Temperature

August registers an average high-temperature of a still moderately hot 76.6°F (24.8°C), slightly varied from July's 78.6°F (25.9°C). August nights present a stark temperature decrease to a cool 52.9°F (11.6°C).

Humidity

With an average relative humidity of 47%, August is the least humid month in Greycliff.

Rainfall

In Greycliff, during August, the rain falls for 12.3 days and regularly aggregates up to 1.22" (31mm) of precipitation. In Greycliff, during the entire year, the rain falls for 129.6 days and collects up to 15.83" (402mm) of precipitation.

Snowfall

June through August are months without snowfall in Greycliff.

Daylight

The average length of the day in August is 14h and 4min.
On the first day of August in Greycliff, sunrise is at 6:03 am and sunset at 8:47 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:58 pm MDT.

Sunshine

The average sunshine in August in Greycliff is 11.5h.

UV index

In August, the average daily maximum UV index in Greycliff is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 5 in August converts into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Updated: Feb 13, 2024 | Published by: Weather U.S. | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What are the temperatures in Greycliff in August?

In August, the average high-temperature and low-temperature are 76.6°F (24.8°C) and 52.9°F (11.6°C) respectively.

What is the least humid month in Greycliff?

The least humid month in Greycliff, Montana, is August, with an average relative humidity of 47%.

What is the average humidity in August in Greycliff?

The average relative humidity in August is 47%.

How many days does it rain in August in Greycliff?

In Greycliff, in August, it is raining for 12.3 days, with typically 1.22" (31mm) of accumulated precipitation.

When it does not snow in Greycliff?

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

Does it snow in Greycliff in August?

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

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

In August, the average day length in Greycliff, Montana, is 14h and 4min.

When are sunrise and sunset in August in Greycliff?

On the first day of August, sunrise is at 6:03 am and sunset at 8:47 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:58 pm MDT.

How long on average sun shines in August in Greycliff?

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

What is the UV index reading in August in Greycliff?

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

Average temperature in August - Greycliff, MT
  • Average high temperature in August: 76.6°F

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is December (28.4°F).

  • Average low temperature in August: 52.9°F

The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is February (15.3°F).

Average pressure in August
Greycliff, MT

Average pressure in August - Greycliff, MT
  • Average pressure in August: 29.94"Hg

The months with the highest atmospheric pressure are January and December (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in August
Greycliff, MT

Average wind speed in August - Greycliff, MT
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).

Average humidity in August
Greycliff, MT

Average humidity in August - Greycliff, MT
  • Average humidity in August: 47%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is August (47%).

Average rainfall in August
Greycliff, MT

Average rainfall in August - Greycliff, MT
  • Average rainfall in August: 1.22"

The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in August
Greycliff, MT

Average rainfall days in August - Greycliff, MT
  • Average rainfall days in August: 12.3 days

The month with the highest number of rainy days is May (19.8 days).
The months with the least rainy days are January and December (5.3 days).

Average snowfall in August
Greycliff, MT

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

The month with the highest snowfall is March (7.09").
The months with the least snowfall are June, July and August (0").

Average snowfall days in August
Greycliff, MT

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

The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in August: 11h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 12min).

Average sunshine days in August
Greycliff, MT

Average sunshine days in August - Greycliff, MT
  • Average sunshine days in August: 14.3 days

The month with the most sunshine days is January (19.8 days).
The month with the least sunshine days is May (7.7 days).

Average UV index in August
Greycliff, MT

Average UV index in August - Greycliff, MT
  • 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, February, March, April, October, November and December (UV index 2).

Average cloud cover in August
Greycliff, MT

Average cloud cover in August - Greycliff, MT
  • Average cloud cover in August: 16

The month with the most cloud cover is February (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 16).

Average visibility in August
Greycliff, MT

Average visibility in August - Greycliff, 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).

Greycliff, Montana, USA

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