August weather forecast
Brentford, SD

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Weather in August

August, the last month of the summer in Brentford, is also a moderately hot month, with an average temperature ranging between max 83.1°F (28.4°C) and min 61°F (16.1°C).

Temperature

Entering August, Brentford's average high-temperature reads a still warm 83.1°F (28.4°C), indicating a close resemblance to the previous month's climate. Brentford reports a marked divergence from daytime peaks throughout August, with lows averaging at a comfortable 61°F (16.1°C).

Heat index

For August, the heat index is calculated to be a hot 86°F (30°C). Continued exposure and engagement in activity might trigger tiredness and subsequently heat cramps.
Consider that heat index readings are for situations in the shade and light wind. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', blends air temperature and moisture content to represent the felt temperature to humans. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.

Humidity

The months with the lowest humidity are August and September, with an average relative humidity of 60%.

Rainfall

In Brentford, in August, it is raining for 10.4 days, with typically 1.61" (41mm) of accumulated precipitation. Throughout the year, there are 97.2 rainfall days, and 18.35" (466mm) of precipitation is accumulated.

Snowfall

In Brentford, snow does not fall in June through September.

Daylight

In August, the average length of the day is 14h and 2min.
On the first day of the month, sunrise is at 6:19 am and sunset at 9:00 pm. On the last day of August, sunrise is at 6:54 am and sunset at 8:11 pm CDT.

Sunshine

In August, the average sunshine is 10.7h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 6 during August translates into the following guidance:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Updated: Aug 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during August?

In August, in Brentford, the average high-temperature is 83.1°F (28.4°C), and the average low-temperature is 61°F (16.1°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 86°F (30°C).

What are the least humid months?

August and September, with an average relative humidity of 60%, are the least humid months.

What is the average humidity in August?

The average relative humidity in August is 60%.

How many days does it rain in August?

In August, the rain falls for 10.4 days. Throughout August, 1.61" (41mm) of precipitation is accumulated.

When it does not snow?

June through September are months without snowfall.

What is the average length of the day in August?

In August, the average day length in Brentford is 14h and 2min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 6:19 am and sunset at 9:00 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 8:11 pm CDT.

How many hours of sunshine does Brentford have in August?

In Brentford, the average sunshine duration in August is 10.7h.

What is the month with the highest UV index?

June through August, with an average maximum UV index of 6, are months with the highest UV index in Brentford.

How high is the UV index in August?

In August, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health threat 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
Brentford, SD

Average temperature in August - Brentford, SD
  • Average high temperature in August: 83.1°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in August: 61°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).

Average pressure in August
Brentford, SD

Average pressure in August - Brentford, SD
  • Average pressure in August: 29.91"Hg

The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in August
Brentford, SD

Average wind speed in August - Brentford, SD
  • Average wind speed in August: 8.3mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).

Average humidity in August
Brentford, SD

Average humidity in August - Brentford, SD
  • Average humidity in August: 60%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (60%).

Average rainfall in August
Brentford, SD

Average rainfall in August - Brentford, SD
  • Average rainfall in August: 1.61"

The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is January (0.59").

Average rainfall days in August
Brentford, SD

Average rainfall days in August - Brentford, SD
  • Average rainfall days in August: 10.4 days

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (2 days).

Average snowfall in August
Brentford, SD

Average snowfall in August - Brentford, SD
  • Average snowfall in August: 0"

The month with the highest snowfall is January (3.82").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Brentford, SD

Average snowfall days in August - Brentford, SD
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Brentford, SD

Average daylight in August / Average sunshine in August - Brentford, SD
  • 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: 10h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in August
Brentford, SD

Average sunshine days in August - Brentford, SD
  • Average sunshine days in August: 18.2 days

The month with the most sunshine days is November (20.9 days).
The month with the least sunshine days is June (12.7 days).

Average UV index in August
Brentford, SD

Average UV index in August - Brentford, SD
  • Average UV index in August: 6

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

Average cloud cover in August
Brentford, SD

Average cloud cover in August - Brentford, SD
  • Average cloud cover in August: 23

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 23).

Average visibility in August
Brentford, SD

Average visibility in August - Brentford, SD
  • Average visibility in August: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Brentford, South Dakota, USA

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