August weather forecast and climate
Roberts, MT

The last month of the summer, August, is also a moderately hot month in Roberts, Montana, with average temperature fluctuating between 81.1°F (27.3°C) and 57.2°F (14°C).

Temperature

In Roberts, Montana, the average high-temperature is relatively the same as in July - a still moderately hot 81.1°F (27.3°C). The average low-temperature, in Roberts, Montana, is 57.2°F (14°C).

Heat index

The average heat index is calculated to 80.8°F (27.1°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 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, metabolic differences, clothing, and pregnancy affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index 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

With an average relative humidity of 41%, August is the least humid month.

Rainfall

In Roberts, Montana, in August, during 10.8 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. In Roberts, during the entire year, the rain falls for 108.1 days and collects up to 12.83" (326mm) of precipitation.

Snowfall

In Roberts snow does not fall in July and August.

Daylight

The average length of the day in August is 14h.

Sunshine

In Roberts, the average sunshine in August is 11.7h.

UV index

In Roberts, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Roberts?

In Roberts, in August, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 57.2°F (14°C). The average heat index (a.k.a. 'real feel', 'feels like'), that calculates temperature value influenced by the moisture in the air, in August is calculated to 80.8°F (27.1°C).

What is the least humid month in Roberts?

August is the least humid month, with an average relative humidity of 41%.

What is the average humidity in August in Roberts?

In August, the average relative humidity is 41%.

How much does it rain in Roberts in August?

In Roberts, during August, the rain falls for 10.8 days and regularly aggregates up to 0.75" (19mm) of precipitation.

Does it snow in Roberts in August?

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

When it does not snow in Roberts?

July and August are months without snowfall in Roberts, Montana.

How many hours of daylight does Roberts have in August?

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

How long on average sun shines in August in Roberts?

In August, the average sunshine in Roberts, Montana, is 11.7h.

What is the UV index reading in August in Roberts?

In Roberts, Montana, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from the exposure to the Sun's UV radiation.
Average temperature in August - Roberts, MT
  • Average high temperature in August: 27.3°C

The warmest month (with the highest average high temperature) is July (28.3°C).
The month with the lowest average high temperature is December (-0.7°C).

  • Average low temperature in August: 14°C

Months with the highest average low temperature are July and August (14°C).
The coldest month (with the lowest average low temperature) is February (-8.5°C).

Average pressure in August - Roberts, MT
  • Average pressure in August: 1013.8mbar

The month with the highest atmospheric pressure is January (1021.1mbar).
The month with the lowest atmospheric pressure is June (1011.9mbar).

Average wind speed in August - Roberts, MT
  • Average wind speed in August: 9.6km/h

The windiest month (with the highest average wind speed) is January (14km/h).
The calmest month (with the lowest average wind speed) is August (9.6km/h).

Average humidity in August - Roberts, MT
  • Average humidity in August: 41%

The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (41%).

Average rainfall in August - Roberts, MT
  • Average rainfall in August: 19mm

The wettest month (with the highest rainfall) is May (53mm).
The driest month (with the least rainfall) is January (13mm).

Average rainfall days in August - Roberts, MT
  • Average rainfall days in August: 10.8 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4 days).

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

The month with the highest snowfall is February (173mm).
Months with the least snowfall are July and August (0mm).

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

The month with the highest number of snowfall days is February (10.8 days).
Months with the least snowfall days are July and August (0 days).

Average daylight in August / Average sunshine in August - Roberts, 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: 11.7h

The month with the most sunshine is July (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 6.2h).

Average sunshine days in August - Roberts, MT
  • Average sunshine days in August: 12.3 days

The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is May (10.5 days).

Average UV index in August - Roberts, MT
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in August - Roberts, MT
  • Average cloud cover in August: 15

The month with the most cloud cover is February (Cloud cover 38).
Months with the least cloud cover are July and August (Cloud cover 15).

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

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