August weather forecast
Union Center, SD

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Weather in August

August, the last month of the summer in Union Center, is another warm month, with an average temperature ranging between max 82.6°F (28.1°C) and min 61.2°F (16.2°C).

Temperature

Union Center, South Dakota, measures an average high-temperature of a still moderately hot 82.6°F (28.1°C) in August, nearly consistent with the preceding month. During August, the average low-temperature in Union Center is a comfortable 61.2°F (16.2°C).

Heat index

The heat index value for August is computed to be 82.4°F (28°C). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.

Humidity

August and September, with an average relative humidity of 49%, are the least humid months in Union Center.

Rainfall

In Union Center, in August, during 13.3 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. In Union Center, during the entire year, the rain falls for 126.3 days and collects up to 16.77" (426mm) of precipitation.

Snowfall

In Union Center, snow does not fall in June through August.

Daylight

In Union Center, the average length of the day in August is 13h and 59min.
On the first day of August in Union Center, sunrise is at 5:38 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 7:28 pm MDT.

Sunshine

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

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 unsafe exposure to UV radiation for average individuals.
Note: A daily maximum UV index of 6 in August translates into the following instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

How hot is August in Union Center?

In Union Center, in August, the average high-temperature is 82.6°F (28.1°C), and the average low-temperature is 61.2°F (16.2°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is computed to be 82.4°F (28°C).

What are the least humid months in Union Center?

August and September, with an average relative humidity of 49%, are the least humid months in Union Center.

What is the average humidity in August in Union Center?

In Union Center, the average relative humidity in August is 49%.

How many days does it rain in August in Union Center?

In Union Center, in August, it is raining for 13.3 days, with typically 1.57" (40mm) of accumulated precipitation.

When it does not snow in Union Center?

June through August are months without snowfall in Union Center, South Dakota.

Does it snow in Union Center in August?

In Union Center, in August, it doesn't snow. In September, it regularly snows.

What is the average length of the day in August in Union Center?

The average day length in August is 13h and 59min.

What time are sunrise and sunset in August in Union Center?

On the first day of August in Union Center, sunrise is at 5:38 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 7:28 pm MDT.

What month has the most sunshine in Union Center?

August has the most sunshine of the year in Union Center, with an average of 11.7h of sunshine.

How many hours of sunshine does Union Center have in August?

The average sunshine duration in August is 11.7h.

What is the month with the highest UV index in Union Center?

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

What is the UV index reading in August in Union Center?

In August, the average daily maximum UV index in Union Center is 6. A UV Index reading of 6 to 7 represents a high hazard to health 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
Union Center, SD

Average temperature in August - Union Center, SD
  • Average high temperature in August: 82.6°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (32.2°F).

  • Average low temperature in August: 61.2°F

The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is February (18°F).

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Average pressure in August
Union Center, SD

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in August
Union Center, SD

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

The windiest month (with the highest average wind speed) is October (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (8.3mph).

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Average humidity in August
Union Center, SD

Average humidity in August - Union Center, SD
  • Average humidity in August: 49%

The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are August and September (49%).

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Average rainfall in August
Union Center, SD

Average rainfall in August - Union Center, SD
  • Average rainfall in August: 1.57"

The wettest month (with the highest rainfall) is May (2.52").
The driest month (with the least rainfall) is January (0.59").

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Average rainfall days in August
Union Center, SD

Average rainfall days in August - Union Center, SD
  • Average rainfall days in August: 13.3 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is December (5.8 days).

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Average snowfall in August
Union Center, SD

Average snowfall in August - Union Center, SD
  • Average snowfall in August: 0"

The month with the highest snowfall is April (8.23").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in August
Union Center, SD

Average snowfall days in August - Union Center, SD
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (12.8 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in August /
Average sunshine in August
Union Center, SD

Average daylight in August / Average sunshine in August - Union Center, SD
  • Average daylight in August: 14h and 0min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in August: 11h and 4min

The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).

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Average sunshine days in August
Union Center, SD

Average sunshine days in August - Union Center, SD
  • Average sunshine days in August: 12.3 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (9.4 days).

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Average UV index in August
Union Center, SD

Average UV index in August - Union Center, 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 2).

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Average cloud cover in August
Union Center, SD

Average cloud cover in August - Union Center, SD
  • Average cloud cover in August: 16

The months with the most cloud cover are February and April (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in August
Union Center, SD

Average visibility in August - Union Center, 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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Union Center, South Dakota, USA

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