August weather forecast
Sand Coulee, MT

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Weather in August

August, the last month of the summer in Sand Coulee, is another warm month, with an average temperature varying between 58.5°F (14.7°C) and 81.5°F (27.5°C).

Temperature

In the transition from July to August, Sand Coulee reports an average high-temperature of a still warm 81.5°F (27.5°C), indicating a close resemblance to the prior month. Sand Coulee registers a substantial downturn from daytime peaks throughout August nights, with an average low-temperature of 58.5°F (14.7°C).

Heat index

For most parts of August, the heat index is computed to be 80.6°F (27°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Consider that heat index readings are for situations in the shade and light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.

Humidity

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

Rainfall

In August, the rain falls for 6.3 days. Throughout August, 0.51" (13mm) of precipitation is accumulated. Throughout the year, there are 85.3 rainfall days, and 9.84" (250mm) of precipitation is accumulated.

Snowfall

In Sand Coulee, snow does not fall in June through August.

Daylight

In August, the average length of the day is 14h and 11min.
On the first day of the month, sunrise is at 6:03 am and sunset at 8:57 pm. On the last day of August, sunrise is at 6:43 am and sunset at 8:06 pm MDT.

Sunshine

In Sand Coulee, the average sunshine in August is 11.5h.

UV index

In Sand Coulee, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 5 during August leads to these instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Sand Coulee in August?

During August, Sand Coulee experiences an average high-temperature of 81.5°F (27.5°C) and a low-temperature of 58.5°F (14.7°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is computed to be 80.6°F (27°C).

What is the least humid month?

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

What is the average humidity in August?

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

How much does it rain in Sand Coulee in August?

In Sand Coulee, in August, it is raining for 6.3 days, with typically 0.51" (13mm) of accumulated precipitation.

When it does not snow?

June through August are months without snowfall.

Does it snow in August?

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

How many hours of daylight does Sand Coulee have in August?

In Sand Coulee, the average day length in August is 14h and 11min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 6:03 am and sunset at 8:57 pm. On the last day of the month, sunrise is at 6:43 am and sunset at 8:06 pm MDT.

How many hours of sunshine does Sand Coulee have in August?

In Sand Coulee, the average sunshine duration in August is 11.5h.

What is the UV index reading in August?

In Sand Coulee, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from 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
Sand Coulee, MT

Average temperature in August - Sand Coulee, MT
  • Average high temperature in August: 81.5°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°F).

  • Average low temperature in August: 58.5°F

The month with the highest average low temperature is August (58.5°F).
The coldest month (with the lowest average low temperature) is February (18.3°F).

Average pressure in August
Sand Coulee, MT

Average pressure in August - Sand Coulee, MT
  • Average pressure in August: 29.91"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in August
Sand Coulee, MT

Average wind speed in August - Sand Coulee, MT
  • Average wind speed in August: 7.8mph

The windiest months (with the highest average wind speed) are January and November (11.4mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).

Average humidity in August
Sand Coulee, MT

Average humidity in August - Sand Coulee, MT
  • Average humidity in August: 40%

The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (40%).

Average rainfall in August
Sand Coulee, MT

Average rainfall in August - Sand Coulee, MT
  • Average rainfall in August: 0.51"

The wettest month (with the highest rainfall) is June (1.57").
The driest month (with the least rainfall) is July (0.47").

Average rainfall days in August
Sand Coulee, MT

Average rainfall days in August - Sand Coulee, MT
  • Average rainfall days in August: 6.3 days

The month with the highest number of rainy days is May (11.7 days).
The months with the least rainy days are November and December (4 days).

Average snowfall in August
Sand Coulee, MT

Average snowfall in August - Sand Coulee, MT
  • Average snowfall in August: 0"

The month with the highest snowfall is February (5.67").
The months with the least snowfall are June, July and August (0").

Average snowfall days in August
Sand Coulee, MT

Average snowfall days in August - Sand Coulee, MT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in August /
Average sunshine in August
Sand Coulee, MT

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

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in August: 11h and 3min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 36min).

Average sunshine days in August
Sand Coulee, MT

Average sunshine days in August - Sand Coulee, MT
  • Average sunshine days in August: 23.9 days

The month with the most sunshine days is July (24.2 days).
The month with the least sunshine days is February (12.4 days).

Average UV index in August
Sand Coulee, MT

Average UV index in August - Sand Coulee, 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, October, November and December (UV index 2).

Average cloud cover in August
Sand Coulee, MT

Average cloud cover in August - Sand Coulee, 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 13).

Average visibility in August
Sand Coulee, MT

Average visibility in August - Sand Coulee, 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).

Sand Coulee, Montana, USA

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