August weather forecast
Darby, MT

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Weather in August

The last month of the summer, August, is another warm month in Darby, Montana, with an average temperature fluctuating between 46.9°F (8.3°C) and 76.3°F (24.6°C).

Temperature

Darby commences August with an average high-temperature of a still moderately hot 76.3°F (24.6°C), maintaining a close resemblance to the previous month. Despite the significant gap from daytime peaks, Darby experiences an average low-temperature of 46.9°F (8.3°C) in August.

Humidity

The least humid month is August, with an average relative humidity of 50%.

Rainfall

The month with the least rainfall in Darby is August, when the rain falls for 8.7 days and typically collects 0.75" (19mm) of precipitation.

Snowfall

In Darby, snow does not fall in June through August.

Daylight

In Darby, the average length of the day in August is 14h and 5min.
On the first day of the month, sunrise is at 6:20 am and sunset at 9:05 pm. On the last day of August, sunrise is at 6:57 am and sunset at 8:16 pm MDT.

Sunshine

July and August, with an average of 11.7h of sunshine, are months with the most sunshine.

UV index

In August, the average daily maximum UV index in Darby is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In August, an average UV index of 4 transforms into the following instructions:
Exercise prevention - Warding off sunburn is urged. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.

Frequently asked questions

What is the average August temperature in Darby?

During August, Darby experiences an average high-temperature of 76.3°F (24.6°C) and a low-temperature of 46.9°F (8.3°C).

What is the least humid month?

The least humid month is August, with an average relative humidity of 50%.

What is the average humidity in August?

In Darby, the average relative humidity in August is 50%.

What is the driest month?

The month with the least rainfall is August, when the rain falls for 8.7 days and typically collects 0.75" (19mm) of precipitation.

How much does it rain in August?

In August, the rain falls for 8.7 days. Throughout August, 0.75" (19mm) of precipitation is accumulated.

When it does not snow in Darby?

June through August are months without snowfall.

Does it snow in August?

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

How many hours of daylight does Darby have in August?

The average day length in August is 14h and 5min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:20 am and sunset at 9:05 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 8:16 pm MDT.

What is the month with the most sunshine?

July and August, with an average of 11.7h of sunshine, are months with the most sunshine.

How long on average sun shines in August?

In August, the average sunshine duration is 11.7h.

What is the UV index reading in August?

In August, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health risk 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
Darby, MT

Average temperature in August - Darby, MT
  • Average high temperature in August: 76.3°F

The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.8°F).

  • Average low temperature in August: 46.9°F

The month with the highest average low temperature is August (46.9°F).
The coldest month (with the lowest average low temperature) is December (14°F).

Average pressure in August
Darby, MT

Average pressure in August - Darby, MT
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
Darby, MT

Average wind speed in August - Darby, MT
  • Average wind speed in August: 4.1mph

The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

Average humidity in August
Darby, MT

Average humidity in August - Darby, MT
  • Average humidity in August: 50%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (50%).

Average rainfall in August
Darby, MT

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

The wettest months (with the highest rainfall) are February and April (2.36").
The driest month (with the least rainfall) is August (0.75").

Average rainfall days in August
Darby, MT

Average rainfall days in August - Darby, MT
  • Average rainfall days in August: 8.7 days

The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is July (8 days).

Average snowfall in August
Darby, MT

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

The month with the highest snowfall is February (13.03").
The months with the least snowfall are June, July and August (0").

Average snowfall days in August
Darby, MT

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

The month with the highest number of snowfall days is February (19.3 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in August / Average sunshine in August - Darby, 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 42min).

  • Average sunshine in August: 11h and 4min

The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).

Average sunshine days in August
Darby, MT

Average sunshine days in August - Darby, MT
  • Average sunshine days in August: 17.4 days

The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is February (5.6 days).

Average UV index in August
Darby, MT

Average UV index in August - Darby, MT
  • Average UV index in August: 4

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 1).

Average cloud cover in August
Darby, MT

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

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in August
Darby, MT

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

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

Darby, Montana, USA

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