August weather forecast
Chester, SD

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Weather in August

The last month of the summer, August, is also a moderately hot month in Chester, South Dakota, with temperature in the range of an average high of 80.6°F (27°C) and an average low of 59.4°F (15.2°C).

Temperature

The commencement of August notes an average high-temperature of a still moderately hot 80.6°F (27°C), exhibiting little difference from the previous month. Chester experiences an average low-temperature of 59.4°F (15.2°C) in month of August.

Heat index

August's mean heat index is computed to be 84.2°F (29°C). If one remains active during constant exposure, it might cause exhaustion and heat cramps.
Know that the heat index computations account for shaded terrains and slight winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', offers an insight into how hot it feels when we factor in moisture content. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. 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

In Chester, South Dakota, the average relative humidity in August is 73%.

Rainfall

In Chester, in August, during 13.3 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. In Chester, during the entire year, the rain falls for 116.4 days and collects up to 21.38" (543mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day in Chester is 13h and 56min.
On the first day of August in Chester, sunrise is at 6:17 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 8:04 pm CDT.

Sunshine

The average sunshine in August is 10.1h.

UV index

In August, the average daily maximum UV index in Chester is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: The UV index of 5 during August leads to these advisories:
Make use of precautions - It is urged to ward off sun damage. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature in Chester?

In Chester, in August, the average high-temperature is 80.6°F (27°C), and the average low-temperature is 59.4°F (15.2°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is computed to be 84.2°F (29°C).

What is the average humidity in August in Chester?

In August, the average relative humidity in Chester, South Dakota, is 73%.

How many days does it rain in August in Chester?

In Chester, South Dakota, during August, the rain falls for 13.3 days and regularly aggregates up to 2.28" (58mm) of precipitation.

When it does not snow in Chester?

In Chester, South Dakota, snow does not fall in June through September.

How many hours of daylight does Chester have in August?

The average day length in August in Chester, South Dakota, is 13h and 56min.

When are sunrise and sunset in August in Chester?

In August, on the first day of the month, sunrise is at 6:17 am and sunset at 8:50 pm. On the last day of the month, in Chester, sunrise is at 6:50 am and sunset at 8:04 pm CDT.

How many hours of sunshine does Chester have in August?

The average sunshine duration in August in Chester is 10.1h.

How high is the UV index in August in Chester?

The average daily maximum UV index in August in Chester is 5. A UV Index reading of 3 to 5 represents a moderate health threat 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
Chester, SD

Average temperature in August - Chester, SD
  • Average high temperature in August: 80.6°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (22.3°F).

  • Average low temperature in August: 59.4°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (8.2°F).

Average pressure in August
Chester, SD

Average pressure in August - Chester, SD
  • Average pressure in August: 29.93"Hg

The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in August
Chester, SD

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

The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is July (8.2mph).

Average humidity in August
Chester, SD

Average humidity in August - Chester, SD
  • Average humidity in August: 73%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (67%).

Average rainfall in August
Chester, SD

Average rainfall in August - Chester, SD
  • Average rainfall in August: 2.28"

The wettest month (with the highest rainfall) is June (3.27").
The driest month (with the least rainfall) is January (0.63").

Average rainfall days in August
Chester, SD

Average rainfall days in August - Chester, SD
  • Average rainfall days in August: 13.3 days

The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.8 days).

Average snowfall in August
Chester, SD

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

The month with the highest snowfall is February (4.29").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Chester, SD

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

The month with the highest number of snowfall days is December (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Chester, SD
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in August
Chester, SD

Average sunshine days in August - Chester, SD
  • Average sunshine days in August: 14.9 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is June (10.6 days).

Average UV index in August
Chester, SD

Average UV index in August - Chester, 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 and December (UV index 1).

Average cloud cover in August
Chester, SD

Average cloud cover in August - Chester, SD
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in August
Chester, SD

Average visibility in August - Chester, 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).

Chester, South Dakota, USA

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