August weather forecast and climate
Birney, MT

August, the last month of the summer, in Birney, is another warm month, with average temperature ranging between min 60.4°F (15.8°C) and max 83.7°F (28.7°C).

Temperature

In Birney, Montana, the average high-temperature is essentially the same as in July - a still warm 83.7°F (28.7°C). The average low-temperature, in August, is 60.4°F (15.8°C).

Heat index

The average heat index is evaluated at 82.9°F (28.3°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, wind, clothing). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

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

Rainfall

In Birney, during 11.6 rainfall days, 1.1" (28mm) of precipitation is typically accumulated. Throughout the year, there are 127.6 rainfall days, and 14.25" (362mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Birney, the average length of the day is 14h.

Sunshine

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

UV index

In Birney, Montana, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in August in Birney?

In Birney, in August, the average high-temperature is 83.7°F (28.7°C), and the average low-temperature is 60.4°F (15.8°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), that combines air temperature and relative humidity, is evaluated at 82.9°F (28.3°C).

What is the least humid month in Birney?

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

What is the average humidity in August in Birney?

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

How many days does it rain in August in Birney?

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

Does it snow in Birney in August?

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

When it does not snow in Birney?

In Birney snow does not fall in June through August.

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

In Birney, the average length of the day in August is 14h.

What are the months with the most sunshine in Birney?

Months with the most sunshine in Birney are July and August, with an average of 11.9h of sunshine.

How long on average sun shines in August in Birney?

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

What is the UV index reading in August in Birney?

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to the UV radiation.
Average temperature in August - Birney, MT
  • Average high temperature in August: 28.7°C

The warmest month (with the highest average high temperature) is July (29.7°C).
The month with the lowest average high temperature is December (-0.5°C).

  • Average low temperature in August: 15.8°C

The month with the highest average low temperature is July (16.4°C).
The coldest months (with the lowest average low temperature) are January and February (-8.8°C).

Average pressure in August - Birney, MT
  • Average pressure in August: 1012.4mbar

The month with the highest atmospheric pressure is January (1020.3mbar).
The month with the lowest atmospheric pressure is June (1010.7mbar).

Average wind speed in August - Birney, MT
  • Average wind speed in August: 11.2km/h

The windiest month (with the highest average wind speed) is April (14.6km/h).
The calmest month (with the lowest average wind speed) is December (10.9km/h).

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

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: 28mm

The wettest month (with the highest rainfall) is May (67mm).
The driest month (with the least rainfall) is December (17mm).

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: 0mm

The month with the highest snowfall is February (132mm).
Months with the least snowfall are June, July and August (0mm).

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).
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: 14h

The month with the longest days is June (Average daylight: 15.6h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in August: 11.9h

Months with the most sunshine are July and August (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 5.7h).

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: 6

The month with the highest UV index is July (UV index 7).
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: 14

The month with the most cloud cover is February (Cloud cover 41).
Months with the least cloud cover are July and August (Cloud cover 14).

Average visibility in August - Birney, MT
  • Average visibility in August: 10km

Months with the highest visibility are May, June, July, August, September and October (10km).
Months with the lowest visibility are January, February, March, April, November and December (9km).