August weather forecast
Birney, MT

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Weather in August

August, the last month of the summer in Birney, is also a moderately hot month, with an average temperature varying between 83.7°F (28.7°C) and 60.4°F (15.8°C).

Temperature

The average high-temperature during August is a still moderately hot 83.7°F (28.7°C), almost matching the conditions of the preceding month. Birney observes a substantial disparity between daytime high and the average low-temperature of 60.4°F (15.8°C) during August nights.

Heat index

August's mean heat index is calculated to be 82.4°F (28°C). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.
Heat index evaluations are typically in the context of light winds and shaded environments. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a numerical representation of warmth when taking temperature and moisture levels into account. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.

Humidity

With an average relative humidity of 40%, August is the least humid month in Birney.

Rainfall

In Birney, in August, it is raining for 11.6 days, with typically 1.1" (28mm) of accumulated precipitation. In Birney, Montana, during the entire year, the rain falls for 127.6 days and collects up to 14.25" (362mm) of precipitation.

Snowfall

June through August are months without snowfall in Birney, Montana.

Daylight

In Birney, the average length of the day in August is 14h and 2min.
On the first day of August, sunrise is at 5:51 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:44 pm MDT.

Sunshine

The months with the most sunshine are July and August, with an average of 11.9h of sunshine.

UV index

In Birney, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 in August interprets into the following advice:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

During August, Birney experiences an average high-temperature of 83.7°F (28.7°C) and a low-temperature of 60.4°F (15.8°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 82.4°F (28°C).

What is the least humid month?

The least humid month is August, with an average relative humidity of 40%.

What is the average humidity in August?

In Birney, the average relative humidity in August is 40%.

How much does it rain in Birney in August?

In Birney, during August, the rain falls for 11.6 days and regularly aggregates up to 1.1" (28mm) of precipitation.

When it does not snow?

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

Does it snow in August?

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

What is the average length of the day in August?

In Birney, the average day length in August is 14h and 2min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 5:51 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:44 pm MDT.

What are the months with the most sunshine?

The months with the most sunshine are July and August, with an average of 11.9h of sunshine.

How long on average sun shines in August?

In Birney, the average sunshine duration in August is 11.9h.

How high is the UV index in August?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health threat 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
Birney, MT

Average temperature in August - Birney, MT
  • Average high temperature in August: 83.7°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (31.1°F).

  • Average low temperature in August: 60.4°F

The month with the highest average low temperature is July (61.5°F).
The coldest months (with the lowest average low temperature) are January and February (16.2°F).

Average pressure in August
Birney, MT

Average pressure in August - Birney, MT
  • Average pressure in August: 29.9"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in August
Birney, MT

Average wind speed in August - Birney, MT
  • Average wind speed in August: 7mph

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest months (with the lowest average wind speed) are July and December (6.8mph).

Average humidity in August
Birney, MT

Average humidity in August - Birney, MT
  • Average humidity in August: 40%

The months with the highest relative humidity are January and February (79%).
The month with the lowest relative humidity is August (40%).

Average rainfall in August
Birney, MT

Average rainfall in August - Birney, MT
  • Average rainfall in August: 1.1"

The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is December (0.67").

Average rainfall days in August
Birney, MT

Average rainfall days in August - Birney, MT
  • Average rainfall days in August: 11.6 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in August
Birney, MT

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

The month with the highest snowfall is February (5.2").
The months with the least snowfall are June, July and August (0").

Average snowfall days in August
Birney, MT

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

The month with the highest number of snowfall days is February (14.3 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in August / Average sunshine in August - Birney, MT
  • Average daylight in August: 14h and 0min

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 5min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).

Average sunshine days in August
Birney, MT

Average sunshine days in August - Birney, MT
  • Average sunshine days in August: 14.4 days

The month with the most sunshine days is September (18.2 days).
The month with the least sunshine days is May (9.6 days).

Average UV index in August
Birney, MT

Average UV index in August - Birney, 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
Birney, MT

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

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 14).

Average visibility in August
Birney, MT

Average visibility in August - Birney, 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).

Birney, Montana, USA

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