August weather forecast and climate
Billings, MT

The forest of trees in the plains, on the sandstone bluffs in Billings, Montana
The forest of trees in the plains, on the sandstone bluffs in Billings, Montana
The last month of the summer, August, is also a moderately hot month in Billings, Montana, with temperature in the range of an average high of 83.1°F (28.4°C) and an average low of 60.3°F (15.7°C).

Temperature

In August, the average high-temperature is relatively the same as in July - a still warm 83.1°F (28.4°C). The average low-temperature, in August, is 60.3°F (15.7°C).

Heat index

The average heat index in August is evaluated at 82.4°F (28°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, wind, pregnancy). 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 particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

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

Rainfall

In August, in Billings, the rain falls for 11 days. Throughout August, 0.98" (25mm) of precipitation is accumulated. In Billings, during the entire year, the rain falls for 128.5 days and collects up to 14.69" (373mm) of precipitation.

Snowfall

In Billings snow does not fall in June through August.

Daylight

In August, the average length of the day is 14.1h.

Sunshine

In August, the average sunshine is 11.6h.

UV index

In Billings, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: In August, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in August in Billings?

The average high-temperature, in August, is 83.1°F (28.4°C), while the average low-temperature is 60.3°F (15.7°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), that factores the actual air temperature with the relative humidity, in August is appraised at 82.4°F (28°C).

What is the least humid month in Billings?

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

What is the average humidity in August in Billings?

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

How much does it rain in Billings in August?

In Billings, during August, the rain falls for 11 days and regularly aggregates up to 0.98" (25mm) of precipitation.

Does it snow in Billings in August?

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

When it does not snow in Billings?

June through August are months without snowfall.

How many hours of daylight does Billings have in August?

In August, the average length of the day in Billings is 14.1h.

How many hours of sunshine does Billings have in August?

The average sunshine in August in Billings, Montana, is 11.6h.

How high is the UV index in August in Billings?

In Billings, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in August - Billings, MT
  • Average high temperature in August: 28.4°C

The warmest month (with the highest average high temperature) is July (29.6°C).
The month with the lowest average high temperature is December (-0.5°C).

  • Average low temperature in August: 15.7°C

The month with the highest average low temperature is July (15.8°C).
The coldest month (with the lowest average low temperature) is February (-7.6°C).

Average pressure in August - Billings, MT
  • Average pressure in August: 1013mbar

The month with the highest atmospheric pressure is January (1020.5mbar).
The month with the lowest atmospheric pressure is June (1011.3mbar).

Average wind speed in August - Billings, MT
  • Average wind speed in August: 11.6km/h

The windiest month (with the highest average wind speed) is January (15.9km/h).
The calmest month (with the lowest average wind speed) is July (11.5km/h).

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

The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (40%).

Average rainfall in August - Billings, MT
  • Average rainfall in August: 25mm

The wettest month (with the highest rainfall) is May (54mm).
The driest month (with the least rainfall) is July (18mm).

Average rainfall days in August - Billings, MT
  • Average rainfall days in August: 11 days

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in August - Billings, MT
  • Average snowfall in August: 0mm

The month with the highest snowfall is February (165mm).
Months with the least snowfall are June, July and August (0mm).

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

The month with the highest number of snowfall days is February (13.3 days).
Months with the least snowfall days are June, July and August (0 days).

Average daylight in August / Average sunshine in August - Billings, MT
  • Average daylight in August: 14.1h

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.7h).

  • Average sunshine in August: 11.6h

The month with the most sunshine is July (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 5.2h).

Average sunshine days in August - Billings, MT
  • Average sunshine days in August: 16.3 days

The month with the most sunshine days is September (18.8 days).
The month with the least sunshine days is April (9.9 days).

Average UV index in August - Billings, 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 - Billings, MT
  • Average cloud cover in August: 16

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

Average visibility in August - Billings, 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).