August weather forecast
Whitehorse, SD

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Weather in August

The last month of the summer, August, is also a moderately hot month in Whitehorse, South Dakota, with temperature in the range of an average high of 84.2°F (29°C) and an average low of 63.3°F (17.4°C).

Temperature

Whitehorse sees the arrival of August with an average high-temperature of a warm 84.2°F (29°C), indicating a subtle variation from July. In Whitehorse, an average temperature of 63.3°F (17.4°C) is noted during August nights.

Heat index

In August, the average heat index is evaluated at a tropical 86°F (30°C). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.
Note that heat index values are valued for light wind and location in the shade. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

The least humid month is August, with an average relative humidity of 52%.

Rainfall

In Whitehorse, South Dakota, during August, the rain falls for 10.4 days and regularly aggregates up to 1.18" (30mm) of precipitation. In Whitehorse, during the entire year, the rain falls for 89.4 days and collects up to 15.39" (391mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

In Whitehorse, South Dakota, the average length of the day in August is 14h and 2min.
On the first day of the month, sunrise is at 5:29 am and sunset at 8:10 pm. On the last day of August, sunrise is at 6:05 am and sunset at 7:22 pm MDT.

Sunshine

The average sunshine in August in Whitehorse is 10.9h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Whitehorse, South Dakota. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: In August, the maximum UV index of 6 suggests this advice:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
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Frequently asked questions

Is it hot in Whitehorse during August?

The average high-temperature and low-temperature in Whitehorse during August are 84.2°F (29°C) and 63.3°F (17.4°C) respectively. In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is evaluated at 86°F (30°C).

What is the least humid month in Whitehorse?

With an average relative humidity of 52%, August is the least humid month in Whitehorse.

What is the average humidity in August in Whitehorse?

In August, the average relative humidity in Whitehorse is 52%.

How many days does it rain in August in Whitehorse?

In August, in Whitehorse, the rain falls for 10.4 days. Throughout August, 1.18" (30mm) of precipitation is accumulated.

When it does not snow in Whitehorse?

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

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

In August, the average day length in Whitehorse, South Dakota, is 14h and 2min.

When are sunrise and sunset in August in Whitehorse?

On the first day of August in Whitehorse, sunrise is at 5:29 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 7:22 pm MDT.

How many hours of sunshine does Whitehorse have in August?

In August, the average sunshine duration in Whitehorse, South Dakota, is 10.9h.

When is the highest UV index in Whitehorse?

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

What is the UV index intensity in August in Whitehorse?

The average daily maximum UV index in August in Whitehorse is 6. A UV Index value of 6 to 7 symbolizes 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
Whitehorse, SD

Average temperature in August - Whitehorse, SD
  • Average high temperature in August: 84.2°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (23°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (9°F).

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Average pressure in August
Whitehorse, SD

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

The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in August
Whitehorse, SD

Average wind speed in August - Whitehorse, SD
  • Average wind speed in August: 9.5mph

The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is February (9.4mph).

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Average humidity in August
Whitehorse, SD

Average humidity in August - Whitehorse, SD
  • Average humidity in August: 52%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (52%).

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Average rainfall in August
Whitehorse, SD

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

The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in August
Whitehorse, SD

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

The month with the highest number of rainy days is June (13.8 days).
The month with the least rainy days is February (1.3 days).

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Average snowfall in August
Whitehorse, SD

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

The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Whitehorse, SD

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

The month with the highest number of snowfall days is January (11.8 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
Whitehorse, SD

Average daylight in August / Average sunshine in August - Whitehorse, 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 5min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in August
Whitehorse, SD

Average sunshine days in August - Whitehorse, SD
  • Average sunshine days in August: 18 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.6 days).

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Average UV index in August
Whitehorse, SD

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

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Average cloud cover in August
Whitehorse, SD

Average cloud cover in August - Whitehorse, SD
  • Average cloud cover in August: 21

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 21).

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Average visibility in August
Whitehorse, SD

Average visibility in August - Whitehorse, 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).

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Whitehorse, South Dakota, USA

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