August weather forecast
Miles City, MT

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Weather in August

While Miles City, Montana remains quite warm during August, the average high temperature decreases slightly from the peaks experienced in July. The decrease in daylight hours becomes more noticeable, as the month progresses towards autumn. Despite being deep in summer, August is less humid and sees a dip in rainfall compared to July. The days are still long and sunny, making it a relatively dry and hot month. The weather in August still retains the traits of summer but initiates the transition towards the mellower autumn season.

Temperature

With the onset of August, the average high-temperature stands at a warm 84.7°F (29.3°C), closely aligned with July's 86.7°F (30.4°C). During August, Miles City observes a consistent average nighttime temperature of 64.8°F (18.2°C).

Humidity

August is the least humid month, with an average relative humidity of 39%.

Rainfall

In Miles City, during August, the rain falls for 8.3 days and regularly aggregates up to 0.63" (16mm) of precipitation. In Miles City, during the entire year, the rain falls for 83.1 days and collects up to 6.81" (173mm) of precipitation.

Snowfall

In Miles City, snow does not fall in June through September.

Daylight

The average length of the day in August is 14h and 7min.
On the first day of the month, sunrise is at 5:45 am and sunset at 8:33 pm. On the last day of August, sunrise is at 6:23 am and sunset at 7:43 pm MDT.

Sunshine

In Miles City, the average sunshine in August is 11.7h.

UV index

In Miles City, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 6 in August interprets into the following advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.

Frequently asked questions

How hot is August?

The average high-temperature and low-temperature during August are 84.7°F (29.3°C) and 64.8°F (18.2°C) respectively. The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in July is evaluated at 86°F (30°C).

What is the least humid month?

With an average relative humidity of 39%, August is the least humid month.

What is the average humidity in August?

In Miles City, Montana, the average relative humidity in August is 39%.

How many days does it rain in August?

In Miles City, during August, the rain falls for 8.3 days and regularly aggregates up to 0.63" (16mm) of precipitation.

When it does not snow in Miles City?

June through September are months without snowfall.

What is the average length of the day in August?

The average day length in August is 14h and 7min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 5:45 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:43 pm MDT.

How long on average sun shines in August?

In August, the average sunshine duration is 11.7h.

How high is the UV index in August in Miles City?

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
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
Miles City, MT

Average temperature in August - Miles City, MT
  • Average high temperature in August: 84.7°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in August: 64.8°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).

Average pressure in August
Miles City, MT

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

The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in August
Miles City, MT

Average wind speed in August - Miles City, MT
  • Average wind speed in August: 9.3mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest months (with the lowest average wind speed) are February and August (9.3mph).

Average humidity in August
Miles City, MT

Average humidity in August - Miles City, MT
  • Average humidity in August: 39%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (39%).

Average rainfall in August
Miles City, MT

Average rainfall in August - Miles City, MT
  • Average rainfall in August: 0.63"

The wettest month (with the highest rainfall) is May (1.1").
The driest months (with the least rainfall) are November and December (0.28").

Average rainfall days in August
Miles City, MT

Average rainfall days in August - Miles City, MT
  • Average rainfall days in August: 8.3 days

The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is December (2.6 days).

Average snowfall in August
Miles City, MT

Average snowfall in August - Miles City, MT
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Miles City, MT

Average snowfall days in August - Miles City, MT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in August /
Average sunshine in August
Miles City, MT

Average daylight in August / Average sunshine in August - Miles City, 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 4min

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: 5h and 6min).

Average sunshine days in August
Miles City, MT

Average sunshine days in August - Miles City, MT
  • Average sunshine days in August: 18.5 days

The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is April (16.5 days).

Average UV index in August
Miles City, MT

Average UV index in August - Miles City, 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, November and December (UV index 2).

Average cloud cover in August
Miles City, MT

Average cloud cover in August - Miles City, MT
  • Average cloud cover in August: 16

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

Average visibility in August
Miles City, MT

Average visibility in August - Miles City, 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).

Miles City, Montana, USA

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