August weather forecast
Heart Butte, MT

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Weather in August

August, the last month of the summer in Heart Butte, is also a moderately hot month, with an average temperature varying between 78.1°F (25.6°C) and 55.2°F (12.9°C).

Temperature

The average high-temperature in August, at a still moderately hot 78.1°F (25.6°C), reveals a modest deviation from July's 78.8°F (26°C). Heart Butte's August nights see a large temperature deviation, with temperatures resting at a low of 55.2°F (12.9°C).

Humidity

With an average relative humidity of 43%, August is the least humid month.

Rainfall

In Heart Butte, in August, during 5.8 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. In Heart Butte, Montana, during the entire year, the rain falls for 70.4 days and collects up to 8.46" (215mm) of precipitation.

Snowfall

In Heart Butte, snow does not fall in June through August.

Daylight

In Heart Butte, the average length of the day in August is 14h and 16min.
On the first day of August, sunrise is at 6:07 am and sunset at 9:07 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 8:14 pm MDT.

Sunshine

The average sunshine in August is 11.4h.

UV index

In Heart Butte, Montana, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 5 in August translates into these instructions:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Stay sun-safe with clothing that is both closely woven and worn loosely.

Frequently asked questions

What is the temperature in August in Heart Butte?

Heart Butte in August has an average high-temperature of 78.1°F (25.6°C) and an average low-temperature of 55.2°F (12.9°C).

What is the least humid month?

With an average relative humidity of 43%, August is the least humid month in Heart Butte.

What is the average humidity in August?

In August, the average relative humidity is 43%.

How many days does it rain in August?

In Heart Butte, during August, the rain falls for 5.8 days and regularly aggregates up to 0.47" (12mm) of precipitation.

When it does not snow in Heart Butte?

June through August are months without snowfall.

Does it snow in August?

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

How many hours of daylight does Heart Butte have in August?

In Heart Butte, the average day length in August is 14h and 16min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 6:07 am and sunset at 9:07 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 8:14 pm MDT.

How many hours of sunshine does Heart Butte have in August?

The average sunshine duration in August is 11.4h.

What is the UV index intensity in August?

In August, the average daily maximum UV index in Heart Butte is 5. A UV Index of 3 to 5 symbolizes 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
Heart Butte, MT

Average temperature in August - Heart Butte, MT
  • Average high temperature in August: 78.1°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is December (27.1°F).

  • Average low temperature in August: 55.2°F

The month with the highest average low temperature is August (55.2°F).
The coldest month (with the lowest average low temperature) is December (15.3°F).

Average pressure in August
Heart Butte, MT

Average pressure in August - Heart Butte, MT
  • Average pressure in August: 29.91"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in August
Heart Butte, MT

Average wind speed in August - Heart Butte, MT
  • Average wind speed in August: 8.8mph

The windiest month (with the highest average wind speed) is January (11.8mph).
The calmest months (with the lowest average wind speed) are July and August (8.8mph).

Average humidity in August
Heart Butte, MT

Average humidity in August - Heart Butte, MT
  • Average humidity in August: 43%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (43%).

Average rainfall in August
Heart Butte, MT

Average rainfall in August - Heart Butte, MT
  • Average rainfall in August: 0.47"

The wettest month (with the highest rainfall) is June (1.77").
The driest month (with the least rainfall) is July (0.31").

Average rainfall days in August
Heart Butte, MT

Average rainfall days in August - Heart Butte, MT
  • Average rainfall days in August: 5.8 days

The month with the highest number of rainy days is May (10.4 days).
The month with the least rainy days is November (2.6 days).

Average snowfall in August
Heart Butte, MT

Average snowfall in August - Heart Butte, MT
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.58").
The months with the least snowfall are June, July and August (0").

Average snowfall days in August
Heart Butte, MT

Average snowfall days in August - Heart Butte, MT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (10.2 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in August /
Average sunshine in August
Heart Butte, MT

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

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in August: 11h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).

Average sunshine days in August
Heart Butte, MT

Average sunshine days in August - Heart Butte, MT
  • Average sunshine days in August: 23.3 days

The month with the most sunshine days is July (23.5 days).
The month with the least sunshine days is April (17.4 days).

Average UV index in August
Heart Butte, MT

Average UV index in August - Heart Butte, 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, October, November and December (UV index 2).

Average cloud cover in August
Heart Butte, MT

Average cloud cover in August - Heart Butte, MT
  • Average cloud cover in August: 16

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 15).

Average visibility in August
Heart Butte, MT

Average visibility in August - Heart Butte, 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).

Heart Butte, Montana, USA

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