August weather forecast
Harrison, MT

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Weather in August

The last month of the summer, August, is another warm month in Harrison, Montana, with temperature in the range of an average high of 81.9°F (27.7°C) and an average low of 50.5°F (10.3°C).

Temperature

With the start of August, Harrison measures an average high-temperature of a still warm 81.9°F (27.7°C), not significantly differing from July's 83.5°F (28.6°C). Harrison, in the heat of August, registers a significant plunge to a mean of 50.5°F (10.3°C) during the nights.

Heat index

In August, the average heat index is appraised at 82.4°F (28°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.

Humidity

The least humid month is August, with an average relative humidity of 44%.

Rainfall

August is the month with the least rainfall in Harrison. Rain falls for 7.6 days and accumulates 0.51" (13mm) of precipitation.

Snowfall

In Harrison, snow does not fall in July and August.

Daylight

In August, the average length of the day is 14h and 4min.
On the first day of the month, sunrise is at 6:11 am and sunset at 8:55 pm. On the last day of August, sunrise is at 6:48 am and sunset at 8:06 pm MDT.

Sunshine

In August, the average sunshine is 11.7h.

UV index

In Harrison, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: An average UV index of 5 in August transforms into this advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Enhance your sun protection with tightly woven, yet airy clothing.
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Frequently asked questions

What is the usual temperature for Harrison in August?

An average high-temperature, in August, in Harrison, is 81.9°F (27.7°C) and the average low-temperature is 50.5°F (10.3°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is appraised at 82.4°F (28°C).

What is the least humid month in Harrison?

The least humid month is August, with an average relative humidity of 44%.

What is the average humidity in August in Harrison?

In Harrison, the average relative humidity in August is 44%.

What is the driest month in Harrison?

August is the month with the least rainfall. Rain falls for 7.6 days and accumulates 0.51" (13mm) of precipitation.

How much does it rain in Harrison in August?

In Harrison, Montana, during August, the rain falls for 7.6 days and regularly aggregates up to 0.51" (13mm) of precipitation.

When it does not snow in Harrison?

In Harrison, Montana, snow does not fall in July and August.

Does it snow in Harrison in August?

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

How many hours of daylight does Harrison have in August?

In Harrison, the average day length in August is 14h and 4min.

What time are sunrise and sunset in August in Harrison?

On the first day of August in Harrison, sunrise is at 6:11 am and sunset at 8:55 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 8:06 pm MDT.

How long on average sun shines in August in Harrison?

In August, the average sunshine duration in Harrison is 11.7h.

What is the UV index intensity in August in Harrison?

In Harrison, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe 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
Harrison, MT

Average temperature in August - Harrison, MT
  • Average high temperature in August: 81.9°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is December (28°F).

  • Average low temperature in August: 50.5°F

The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (12.7°F).

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Average pressure in August
Harrison, MT

Average pressure in August - Harrison, MT
  • Average pressure in August: 29.96"Hg

The months with the highest atmospheric pressure are January and December (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in August
Harrison, MT

Average wind speed in August - Harrison, MT
  • Average wind speed in August: 4.2mph

The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

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Average humidity in August
Harrison, MT

Average humidity in August - Harrison, MT
  • Average humidity in August: 44%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (44%).

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Average rainfall in August
Harrison, MT

Average rainfall in August - Harrison, 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 August (0.51").

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Average rainfall days in August
Harrison, MT

Average rainfall days in August - Harrison, MT
  • Average rainfall days in August: 7.6 days

The month with the highest number of rainy days is April (16.5 days).
The month with the least rainy days is August (7.6 days).

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Average snowfall in August
Harrison, MT

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

The month with the highest snowfall is February (6.02").
The months with the least snowfall are July and August (0").

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Average snowfall days in August
Harrison, MT

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

The month with the highest number of snowfall days is February (16.5 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
Harrison, MT

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

The month with the longest days is June (Average daylight: 15h and 42min).
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 48min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).

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Average sunshine days in August
Harrison, MT

Average sunshine days in August - Harrison, MT
  • Average sunshine days in August: 17.6 days

The month with the most sunshine days is September (18.7 days).
The month with the least sunshine days is April (9.3 days).

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Average UV index in August
Harrison, MT

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

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in August
Harrison, MT

Average cloud cover in August - Harrison, MT
  • Average cloud cover in August: 13

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).

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Average visibility in August
Harrison, MT

Average visibility in August - Harrison, MT
  • Average visibility in August: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

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Harrison, Montana, USA

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