August weather forecast
Boyd, MT

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Weather in August

The last month of the summer, August, is another warm month in Boyd, Montana, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 57.2°F (14°C).

Temperature

August's arrival brings an average high-temperature of a still moderately hot 81.1°F (27.3°C), demonstrating subtle variation from the preceding month. In Boyd, the nighttime temperature registers a significant drop from daytime peaks to an average of 57.2°F (14°C) in August.

Heat index

The heat index value during August is calculated to be 80.6°F (27°C). Constant activity during exposure could result in a state of weariness and possibly heat cramps.
Heat index specifics point out values are for conditions of shade and a slight breeze. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.

Humidity

With an average relative humidity of 41%, August is the least humid month in Boyd.

Rainfall

In Boyd, in August, during 10.8 rainfall days, 0.75" (19mm) of precipitation is typically accumulated. Throughout the year, there are 108.1 rainfall days, and 12.83" (326mm) of precipitation is accumulated.

Snowfall

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

Daylight

In August, the average length of the day in Boyd is 14h and 3min.
On the first day of August in Boyd, sunrise is at 6:01 am and sunset at 8:43 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 7:55 pm MDT.

Sunshine

In August, the average sunshine in Boyd is 11.7h.

UV index

The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: A typical high UV index of 5 in August suggests the following recommendations:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August in Boyd?

In Boyd, in August, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 57.2°F (14°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is calculated to be 80.6°F (27°C).

What is the least humid month in Boyd?

With an average relative humidity of 41%, August is the least humid month.

What is the average humidity in August in Boyd?

The average relative humidity in August in Boyd is 41%.

How much does it rain in Boyd in August?

In Boyd, Montana, in August, during 10.8 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

When it does not snow in Boyd?

July and August are months without snowfall.

Does it snow in Boyd in August?

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

What is the average length of the day in August in Boyd?

In August, the average day length is 14h and 3min.

When is the sunrise / sunset in August in Boyd?

In August, on the first day of the month, sunrise is at 6:01 am and sunset at 8:43 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 7:55 pm MDT.

How many hours of sunshine does Boyd have in August?

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

How high is the UV index in August in Boyd?

In August, the average daily maximum UV index in Boyd is 5. A UV Index of 3 to 5 symbolizes 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
Boyd, MT

Average temperature in August - Boyd, MT
  • Average high temperature in August: 81.1°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 (30.7°F).

  • Average low temperature in August: 57.2°F

The months with the highest average low temperature are July and August (57.2°F).
The coldest month (with the lowest average low temperature) is February (16.7°F).

Average pressure in August
Boyd, MT

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

The months with the highest atmospheric pressure are January and December (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in August
Boyd, MT

Average wind speed in August - Boyd, MT
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).

Average humidity in August
Boyd, MT

Average humidity in August - Boyd, MT
  • Average humidity in August: 41%

The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (41%).

Average rainfall in August
Boyd, MT

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

The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.51").

Average rainfall days in August
Boyd, MT

Average rainfall days in August - Boyd, MT
  • Average rainfall days in August: 10.8 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4 days).

Average snowfall in August
Boyd, MT

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

The month with the highest snowfall is February (6.81").
The months with the least snowfall are July and August (0").

Average snowfall days in August
Boyd, MT

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

The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in August / Average sunshine in August - Boyd, MT
  • Average daylight in August: 14h and 0min

The month with the longest days is June (Average daylight: 15h and 36min).
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 54min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).

Average sunshine days in August
Boyd, MT

Average sunshine days in August - Boyd, MT
  • Average sunshine days in August: 12.3 days

The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is May (10.5 days).

Average UV index in August
Boyd, MT

Average UV index in August - Boyd, 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, November and December (UV index 2).

Average cloud cover in August
Boyd, MT

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

The month with the most cloud cover is February (Cloud cover 38).
The months with the least cloud cover are July and August (Cloud cover 15).

Average visibility in August
Boyd, MT

Average visibility in August - Boyd, 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).

Boyd, Montana, USA

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