August weather forecast
Onaka, SD

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Weather in August

August, the last month of the summer in Onaka, is also a moderately hot month, with an average temperature fluctuating between 63°F (17.2°C) and 83.8°F (28.8°C).

Temperature

Transitioning from July to August, Onaka observes an average high-temperature of a still warm 83.8°F (28.8°C), differing subtly from the previous month. During August, Onaka sees a mean low-temperature of 63°F (17.2°C).

Heat index

August's heat index is evaluated at a tropical 86°F (30°C). Continuous exposure and activity could induce a sense of tiredness and subsequently, heat cramps.
Always consider that heat index estimations are for light winds and places in the shade. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.

Humidity

August and September, with an average relative humidity of 56%, are the least humid months.

Rainfall

In Onaka, in August, during 11.3 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. In Onaka, during the entire year, the rain falls for 97.8 days and collects up to 16.65" (423mm) of precipitation.

Snowfall

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

Daylight

In Onaka, the average length of the day in August is 14h and 2min.
On the first day of August in Onaka, sunrise is at 6:23 am and sunset at 9:04 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 8:16 pm CDT.

Sunshine

The average sunshine in August 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 hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
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Frequently asked questions

How hot does it get in Onaka in August?

Onaka in August has an average high-temperature of 83.8°F (28.8°C) and an average low-temperature of 63°F (17.2°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is evaluated at 86°F (30°C).

What is the least humid month in Onaka?

The months with the lowest humidity are August and September, with an average relative humidity of 56%.

What is the average humidity in August in Onaka?

The average relative humidity in August in Onaka, South Dakota, is 56%.

How much does it rain in Onaka in August?

In Onaka, South Dakota, in August, during 11.3 rainfall days, 1.42" (36mm) of precipitation is typically accumulated.

When it does not snow in Onaka?

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

How many hours of daylight does Onaka have in August?

The average day length in August is 14h and 2min.

When are sunrise and sunset in August in Onaka?

On the first day of August in Onaka, South Dakota, sunrise is at 6:23 am and sunset at 9:04 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 8:16 pm CDT.

How long on average sun shines in August in Onaka?

In August, the average sunshine duration is 10.7h.

What are the months with the highest UV index in Onaka?

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

How high is the UV index in August in Onaka?

In August, the average daily maximum UV index in Onaka is 6. A UV Index of 6 to 7 symbolizes a high hazard to health 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
Onaka, SD

Average temperature in August - Onaka, SD
  • Average high temperature in August: 83.8°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (22.6°F).

  • Average low temperature in August: 63°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).

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Average pressure in August
Onaka, SD

Average pressure in August - Onaka, 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
Onaka, SD

Average wind speed in August - Onaka, SD
  • Average wind speed in August: 9.7mph

The windiest month (with the highest average wind speed) is April (11.8mph).
The calmest month (with the lowest average wind speed) is August (9.7mph).

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Average humidity in August
Onaka, SD

Average humidity in August - Onaka, SD
  • Average humidity in August: 56%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are August and September (56%).

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Average rainfall in August
Onaka, SD

Average rainfall in August - Onaka, SD
  • Average rainfall in August: 1.42"

The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.55").

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Average rainfall days in August
Onaka, SD

Average rainfall days in August - Onaka, SD
  • Average rainfall days in August: 11.3 days

The month with the highest number of rainy days is June (14.4 days).
The month with the least rainy days is February (1.9 days).

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Average snowfall in August
Onaka, SD

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

The month with the highest snowfall is February (5.04").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Onaka, SD

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

The month with the highest number of snowfall days is January (12.8 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
Onaka, SD

Average daylight in August / Average sunshine in August - Onaka, 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 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in August
Onaka, SD

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

The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (13.1 days).

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Average UV index in August
Onaka, SD

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

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Average cloud cover in August
Onaka, SD

Average cloud cover in August - Onaka, SD
  • Average cloud cover in August: 22

The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 22).

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Average visibility in August
Onaka, SD

Average visibility in August - Onaka, 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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Onaka, South Dakota, USA

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