August weather forecast
Lake McDonald, MT

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Weather in August

The last month of the summer, August, is another warm month in Lake McDonald, Montana, with an average temperature ranging between max 76.8°F (24.9°C) and min 45.5°F (7.5°C).

Temperature

Lake McDonald records a slight change with August's average high-temperatures adjusting to a still warm 76.8°F (24.9°C) from July's 77.9°F (25.5°C). Lake McDonald, amidst the high August temperatures, experiences a substantial shift to an average nighttime low of 45.5°F (7.5°C).

Humidity

With an average relative humidity of 55%, August is the least humid month.

Rainfall

August is the month with the least rainfall in Lake McDonald, Montana. Rain falls for 6.3 days and accumulates 0.43" (11mm) of precipitation.

Snowfall

In Lake McDonald, snow does not fall in June through August.

Daylight

In Lake McDonald, the average length of the day in August is 14h and 17min.
On the first day of August in Lake McDonald, sunrise is at 6:11 am and sunset at 9:12 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 8:18 pm MDT.

Sunshine

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

UV index

In Lake McDonald, the average daily maximum UV index in August is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 4 in August translates into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
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Frequently asked questions

What is the usual temperature for Lake McDonald in August?

The high-temperature in Lake McDonald, Montana, during August is 76.8°F (24.9°C) and the low-temperature is 45.5°F (7.5°C).

What is the least humid month in Lake McDonald?

With an average relative humidity of 55%, August is the least humid month in Lake McDonald, Montana.

What is the average humidity in August in Lake McDonald?

In Lake McDonald, Montana, the average relative humidity in August is 55%.

What is the driest month in Lake McDonald?

The month with the least rainfall in Lake McDonald is August, when the rain falls for 6.3 days and typically collects 0.43" (11mm) of precipitation.

How much does it rain in Lake McDonald in August?

In Lake McDonald, during August, the rain falls for 6.3 days and regularly aggregates up to 0.43" (11mm) of precipitation.

When it does not snow in Lake McDonald?

In Lake McDonald, snow does not fall in June through August.

Does it snow in Lake McDonald in August?

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

How many hours of daylight does Lake McDonald have in August?

In Lake McDonald, the average day length in August is 14h and 17min.

When is the sunrise / sunset in August in Lake McDonald?

In August, on the first day of the month, sunrise is at 6:11 am and sunset at 9:12 pm. On the last day of the month, in Lake McDonald, Montana, sunrise is at 6:52 am and sunset at 8:18 pm MDT.

How long on average sun shines in August in Lake McDonald?

The average sunshine duration in August in Lake McDonald, Montana, is 11.7h.

What is the UV index intensity in August in Lake McDonald?

The average daily maximum UV index in August in Lake McDonald, Montana, is 4. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Lake McDonald, MT

Average temperature in August - Lake McDonald, MT
  • Average high temperature in August: 76.8°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (25.7°F).

  • Average low temperature in August: 45.5°F

The month with the highest average low temperature is August (45.5°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).

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Average pressure in August
Lake McDonald, MT

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in August
Lake McDonald, MT

Average wind speed in August - Lake McDonald, MT
  • Average wind speed in August: 3.7mph

The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are August and December (3.7mph).

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Average humidity in August
Lake McDonald, MT

Average humidity in August - Lake McDonald, MT
  • Average humidity in August: 55%

The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (55%).

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Average rainfall in August
Lake McDonald, MT

Average rainfall in August - Lake McDonald, MT
  • Average rainfall in August: 0.43"

The wettest month (with the highest rainfall) is June (1.42").
The driest month (with the least rainfall) is August (0.43").

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Average rainfall days in August
Lake McDonald, MT

Average rainfall days in August - Lake McDonald, MT
  • Average rainfall days in August: 6.3 days

The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is August (6.3 days).

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Average snowfall in August
Lake McDonald, MT

Average snowfall in August - Lake McDonald, MT
  • Average snowfall in August: 0"

The month with the highest snowfall is January (7.72").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in August
Lake McDonald, MT

Average snowfall days in August - Lake McDonald, MT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (19.1 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
Lake McDonald, MT

Average daylight in August / Average sunshine in August - Lake McDonald, MT
  • Average daylight in August: 14h and 2min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • 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 January (Average sunshine: 3h and 30min).

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Average sunshine days in August
Lake McDonald, MT

Average sunshine days in August - Lake McDonald, MT
  • Average sunshine days in August: 21.4 days

The month with the most sunshine days is July (21.5 days).
The month with the least sunshine days is March (7.7 days).

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Average UV index in August
Lake McDonald, MT

Average UV index in August - Lake McDonald, MT
  • Average UV index in August: 4

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in August
Lake McDonald, MT

Average cloud cover in August - Lake McDonald, MT
  • Average cloud cover in August: 15

The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 15).

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Average visibility in August
Lake McDonald, MT

Average visibility in August - Lake McDonald, MT
  • Average visibility in August: 6mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).

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Lake McDonald, Montana, USA

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