August weather forecast
Box Elder, SD

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Weather in August

August, while showcasing high summer temperatures, also signals the impending arrival of autumn. Box Elder continues to experience hot and rather dry weather with the landscape revealing the golden hues of summer. Though there's a slight drop in the maximum temperature around 82.8°F (28.2°C), the city remains under the influence of the summer's peak heat. The skyline stands clear with reduced cloud cover allowing more sunshine and lighting up the landscape in unique shades. As the month rounds off, the residents start to anticipate the freshness of the forthcoming fall season, bringing a sense of rejuvenation.

Temperature

The arrival of August coincides with an average high-temperature of a still warm 82.8°F (28.2°C), indicating a minimal shift from July's 84.7°F (29.3°C). Box Elder reports an average nighttime low-temperature of 61.5°F (16.4°C) in August.

Heat index

The heat index value during August is appraised at 84.2°F (29°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.
Consider that heat index readings are for situations in the shade and light wind. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

August and September, with an average relative humidity of 50%, are the least humid months.

Rainfall

In August, the rain falls for 12.8 days. Throughout August, 1.5" (38mm) of precipitation is accumulated. Throughout the year, there are 118.8 rainfall days, and 15.39" (391mm) of precipitation is accumulated.

Snowfall

In Box Elder, snow does not fall in June through August.

Daylight

In Box Elder, the average length of the day in August is 13h and 58min.
On the first day of August, sunrise is at 5:41 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:29 pm MDT.

Sunshine

August has the most sunshine of the year, with an average of 11.8h of sunshine.

UV index

In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 5 during August translates into these guidelines:
Exercise prevention - Warding off sunburn is urged. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August in Box Elder?

During August, Box Elder experiences an average high-temperature of 82.8°F (28.2°C) and a low-temperature of 61.5°F (16.4°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, in August is appraised at 84.2°F (29°C).

What is the least humid month?

The months with the lowest humidity are August and September, with an average relative humidity of 50%.

What is the average humidity in August?

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

How many days does it rain in August?

In Box Elder, in August, during 12.8 rainfall days, 1.5" (38mm) of precipitation is typically accumulated.

When it does not snow?

June through August are months without snowfall.

Does it snow in August?

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

What is the average length of the day in August?

In Box Elder, the average day length in August is 13h and 58min.

When are sunrise and sunset in August in Box Elder?

In August, on the first day of the month, sunrise is at 5:41 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:15 am and sunset at 7:29 pm MDT.

What month has the most sunshine?

August has the most sunshine of the year, with an average of 11.8h of sunshine.

How long on average sun shines in August?

In August, the average sunshine duration is 11.8h.

How high is the UV index in August?

The average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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
Box Elder, SD

Average temperature in August - Box Elder, SD
  • Average high temperature in August: 82.8°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (32.5°F).

  • Average low temperature in August: 61.5°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).

Average pressure in August
Box Elder, SD

Average pressure in August - Box Elder, SD
  • Average pressure in August: 29.9"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in August
Box Elder, SD

Average wind speed in August - Box Elder, SD
  • Average wind speed in August: 8.2mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).

Average humidity in August
Box Elder, SD

Average humidity in August - Box Elder, SD
  • Average humidity in August: 50%

The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are August and September (50%).

Average rainfall in August
Box Elder, SD

Average rainfall in August - Box Elder, SD
  • Average rainfall in August: 1.5"

The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is January (0.43").

Average rainfall days in August
Box Elder, SD

Average rainfall days in August - Box Elder, SD
  • Average rainfall days in August: 12.8 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is December (4.8 days).

Average snowfall in August
Box Elder, SD

Average snowfall in August - Box Elder, SD
  • Average snowfall in August: 0"

The month with the highest snowfall is April (5.43").
The months with the least snowfall are June, July and August (0").

Average snowfall days in August
Box Elder, SD

Average snowfall days in August - Box Elder, SD
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in August /
Average sunshine in August
Box Elder, SD

Average daylight in August / Average sunshine in August - Box Elder, SD
  • Average daylight in August: 14h and 0min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in August: 11h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).

Average sunshine days in August
Box Elder, SD

Average sunshine days in August - Box Elder, SD
  • Average sunshine days in August: 14.5 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (11 days).

Average UV index in August
Box Elder, SD

Average UV index in August - Box Elder, SD
  • Average UV index in August: 5

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Box Elder, SD

Average cloud cover in August - Box Elder, SD
  • Average cloud cover in August: 16

The months with the most cloud cover are February and April (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 16).

Average visibility in August
Box Elder, SD

Average visibility in August - Box Elder, SD
  • 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).

Box Elder, South Dakota, USA

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