August weather forecast
Cottonwood, SD

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Weather in August

August, the last month of the summer in Cottonwood, is another tropical month, with an average temperature ranging between max 87.1°F (30.6°C) and min 66.9°F (19.4°C).

Temperature

The average high-temperature is a still hot 87.1°F (30.6°C) in August, hardly different from the 89.2°F (31.8°C) recorded in July. During the month of August, the temperature generally drops to a low average of 66.9°F (19.4°C).

Heat index

In August, the average heat index is appraised at a tropical 89.6°F (32°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.
In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.

Humidity

In Cottonwood, the average relative humidity in August is 48%.

Rainfall

In August, the rain falls for 10.8 days. Throughout August, 1.18" (30mm) of precipitation is accumulated. In Cottonwood, during the entire year, the rain falls for 95.3 days and collects up to 13.74" (349mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day in Cottonwood is 13h and 57min.
On the first day of the month, sunrise is at 5:36 am and sunset at 8:11 pm. On the last day of August, sunrise is at 6:10 am and sunset at 7:24 pm MDT.

Sunshine

With an average of 11.7h of sunshine, August has the most sunshine of the year.

UV index

The average daily maximum UV index in August in Cottonwood is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: In August, the maximum UV index of 6 suggests these recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.
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Frequently asked questions

Is it hot in Cottonwood during August?

The high-temperature, in August, in Cottonwood, is 87.1°F (30.6°C), while the low-temperature averages to 66.9°F (19.4°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is appraised at 89.6°F (32°C).

What is the average humidity in August in Cottonwood?

In August, the average relative humidity in Cottonwood, South Dakota, is 48%.

How many days does it rain in August in Cottonwood?

In Cottonwood, South Dakota, in August, during 10.8 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

When it does not snow in Cottonwood?

June through September are months without snowfall in Cottonwood, South Dakota.

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

In Cottonwood, South Dakota, the average day length in August is 13h and 57min.

When is the sunrise / sunset in August in Cottonwood?

In August, on the first day of the month, sunrise is at 5:36 am and sunset at 8:11 pm. On the last day of the month, in Cottonwood, South Dakota, sunrise is at 6:10 am and sunset at 7:24 pm MDT.

What month has the most sunshine in Cottonwood?

With an average of 11.7h of sunshine, August has the most sunshine of the year.

How long on average sun shines in August in Cottonwood?

In Cottonwood, South Dakota, the average sunshine duration in August is 11.7h.

What is the UV index reading in August in Cottonwood?

In Cottonwood, South Dakota, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's 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
Cottonwood, SD

Average temperature in August - Cottonwood, SD
  • Average high temperature in August: 87.1°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (29.8°F).

  • Average low temperature in August: 66.9°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

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Average pressure in August
Cottonwood, SD

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in August
Cottonwood, SD

Average wind speed in August - Cottonwood, SD
  • Average wind speed in August: 10.2mph

The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is February (10.1mph).

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Average humidity in August
Cottonwood, SD

Average humidity in August - Cottonwood, SD
  • Average humidity in August: 48%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (47%).

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Average rainfall in August
Cottonwood, SD

Average rainfall in August - Cottonwood, SD
  • Average rainfall in August: 1.18"

The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.39").

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Average rainfall days in August
Cottonwood, SD

Average rainfall days in August - Cottonwood, SD
  • Average rainfall days in August: 10.8 days

The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is February (2.6 days).

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Average snowfall in August
Cottonwood, SD

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

The month with the highest snowfall is February (3.15").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Cottonwood, SD

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

The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Cottonwood, 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: 11h and 4min

The month with the most sunshine is August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).

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Average sunshine days in August
Cottonwood, SD

Average sunshine days in August - Cottonwood, SD
  • Average sunshine days in August: 16.7 days

The month with the most sunshine days is December (21.1 days).
The months with the least sunshine days are April and June (14.1 days).

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Average UV index in August
Cottonwood, SD

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

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in August
Cottonwood, SD

Average cloud cover in August - Cottonwood, SD
  • Average cloud cover in August: 18

The month with the most cloud cover is January (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 18).

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Average visibility in August
Cottonwood, SD

Average visibility in August - Cottonwood, 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).

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Cottonwood, South Dakota, USA

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