August weather forecast
Joliet, MT

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Weather in August

The last month of the summer, August, is another warm month in Joliet, Montana, with an average temperature varying between 81.1°F (27.3°C) and 57.2°F (14°C).

Temperature

August denotes a minimal variation in the average high-temperature to a still moderately hot 81.1°F (27.3°C) from July's 82.9°F (28.3°C). Despite the intense daytime heat, Joliet sustains a steady low-temperature average of 57.2°F (14°C) during August.

Heat index

For most parts of August, the heat index is calculated to be 80.6°F (27°C). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

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

Rainfall

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

Snowfall

July and August are months without snowfall.

Daylight

In Joliet, the average length of the day in August is 14h and 3min.
On the first day of the month, sunrise is at 6:00 am and sunset at 8:43 pm. On the last day of August, in Joliet, sunrise is at 6:37 am and sunset at 7:54 pm MDT.

Sunshine

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

UV index

In August, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In August, an average UV index of 5 transforms into the following instructions:
Heed the precautions - It is counselled to guard against solar damage. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
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Frequently asked questions

What is the temperature in August in Joliet?

The average high-temperature and low-temperature in Joliet during August are 81.1°F (27.3°C) and 57.2°F (14°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 80.6°F (27°C).

What is the least humid month in Joliet?

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

What is the average humidity in August in Joliet?

In August, the average relative humidity in Joliet, Montana, is 41%.

How much does it rain in Joliet in August?

In Joliet, in August, during 10.8 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

When it does not snow in Joliet?

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

Does it snow in Joliet in August?

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

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

In Joliet, the average day length in August is 14h and 3min.

What time are sunrise and sunset in August in Joliet?

In August, on the first day of the month, sunrise is at 6:00 am and sunset at 8:43 pm. On the last day of the month, in Joliet, Montana, sunrise is at 6:37 am and sunset at 7:54 pm MDT.

How many hours of sunshine does Joliet have in August?

The average sunshine duration in August in Joliet is 11.7h.

How high is the UV index in August in Joliet?

The average daily maximum UV index in August in Joliet, Montana, is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to 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
Joliet, MT

Average temperature in August - Joliet, MT
  • Average high temperature in August: 81.1°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (30.7°F).

  • Average low temperature in August: 57.2°F

The months with the highest average low temperature are July and August (57.2°F).
The coldest month (with the lowest average low temperature) is February (16.7°F).

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Average pressure in August
Joliet, MT

Average pressure in August - Joliet, MT
  • Average pressure in August: 29.94"Hg

The months with the highest atmospheric pressure are January and December (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed in August
Joliet, MT

Average wind speed in August - Joliet, MT
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in August
Joliet, MT

Average humidity in August - Joliet, 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%).

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Average rainfall in August
Joliet, MT

Average rainfall in August - Joliet, MT
  • Average rainfall in August: 0.75"

The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.51").

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Average rainfall days in August
Joliet, MT

Average rainfall days in August - Joliet, 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).

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Average snowfall in August
Joliet, MT

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

The month with the highest snowfall is February (6.81").
The months with the least snowfall are July and August (0").

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Average snowfall days in August
Joliet, MT

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

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

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

Average daylight in August / Average sunshine in August - Joliet, MT
  • Average daylight in August: 14h and 1min

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 4min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).

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Average sunshine days in August
Joliet, MT

Average sunshine days in August - Joliet, 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).

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Average UV index in August
Joliet, MT

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

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

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Average cloud cover in August
Joliet, MT

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

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

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Average visibility in August
Joliet, MT

Average visibility in August - Joliet, 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).

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Joliet, Montana, USA

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