August weather forecast
Dayton, MT

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Weather in August

The last month of the summer, August, is another warm month in Dayton, Montana, with an average temperature fluctuating between 78.4°F (25.8°C) and 48.2°F (9°C).

Temperature

In Dayton, August's average high-temperature stands at a still warm 78.4°F (25.8°C), closely related to the preceding month. Despite a significant disparity with daytime temperatures, an average low-temperature of 48.2°F (9°C) is recorded during August.

Humidity

The months with the lowest humidity are July and August, with an average relative humidity of 52%.

Rainfall

In Dayton, in August, during 7.1 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. Throughout the year, there are 129.8 rainfall days, and 16.42" (417mm) of precipitation is accumulated.

Snowfall

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

Daylight

In August, the average length of the day is 14h and 14min.
On the first day of August, sunrise is at 6:14 am and sunset at 9:11 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 8:19 pm MDT.

Sunshine

In Dayton, the average sunshine in August is 11.6h.

UV index

In Dayton, Montana, the average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In August, the maximum UV index of 4 suggests these recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Updated: Aug 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are August temperatures?

In August, the average high-temperature and low-temperature are 78.4°F (25.8°C) and 48.2°F (9°C) respectively.

What is the least humid month?

The months with the lowest humidity are July and August, with an average relative humidity of 52%.

What is the average humidity in August?

In Dayton, the average relative humidity in August is 52%.

How much does it rain in August?

In August, the rain falls for 7.1 days. Throughout August, 0.63" (16mm) of precipitation is accumulated.

When it does not snow?

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

Does it snow in August?

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

What is the average length of the day in August?

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

When are sunrise and sunset in August?

On the first day of August, sunrise is at 6:14 am and sunset at 9:11 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 8:19 pm MDT.

How long on average sun shines in August?

In August, the average sunshine duration is 11.6h.

How high is the UV index in August?

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

Average temperature in August - Dayton, MT
  • Average high temperature in August: 78.4°F

The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (27.1°F).

  • Average low temperature in August: 48.2°F

The month with the highest average low temperature is July (48.4°F).
The coldest months (with the lowest average low temperature) are January and December (16.2°F).

Average pressure in August
Dayton, MT

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

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in August
Dayton, MT

Average wind speed in August - Dayton, MT
  • Average wind speed in August: 3.6mph

The windiest month (with the highest average wind speed) is April (4.7mph).
The calmest months (with the lowest average wind speed) are August and December (3.6mph).

Average humidity in August
Dayton, MT

Average humidity in August - Dayton, MT
  • Average humidity in August: 52%

The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (52%).

Average rainfall in August
Dayton, MT

Average rainfall in August - Dayton, MT
  • Average rainfall in August: 0.63"

The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is July (0.59").

Average rainfall days in August
Dayton, MT

Average rainfall days in August - Dayton, MT
  • Average rainfall days in August: 7.1 days

The month with the highest number of rainy days is April (15.9 days).
The month with the least rainy days is December (6.5 days).

Average snowfall in August
Dayton, MT

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

The month with the highest snowfall is December (12.36").
The months with the least snowfall are July and August (0").

Average snowfall days in August
Dayton, MT

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

The month with the highest number of snowfall days is January (22.3 days).
The months with the least snowfall days are July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in August: 11h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

Average sunshine days in August
Dayton, MT

Average sunshine days in August - Dayton, MT
  • Average sunshine days in August: 20 days

The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is February (7.1 days).

Average UV index in August
Dayton, MT

Average UV index in August - Dayton, 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).

Average cloud cover in August
Dayton, MT

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

The month with the most cloud cover is January (Cloud cover 64).
The months with the least cloud cover are July and August (Cloud cover 15).

Average visibility in August
Dayton, MT

Average visibility in August - Dayton, 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).

Dayton, Montana, USA

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