August weather forecast
Reliance, SD

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Weather in August

The last month of the summer, August, is another warm month in Reliance, South Dakota, with an average temperature ranging between max 85.8°F (29.9°C) and min 63.7°F (17.6°C).

Temperature

With the arrival of August, Reliance's average high-temperature registers at a moderately hot 85.8°F (29.9°C), indicating a subtle variation from the previous month. A stark contrast in day to night temperatures can be seen in Reliance in August, with an average low-temperature of 63.7°F (17.6°C).

Heat index

For most parts of August, the heat index is estimated at a hot 89.6°F (32°C). Long-lasting exposure and activity potentially induce a sense of weariness, with the risk of heat cramps.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is found by incorporating humidity levels into the air temperature measurement. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are largely significant for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.

Humidity

In Reliance, the average relative humidity in August is 59%.

Rainfall

In Reliance, in August, it is raining for 11 days, with typically 1.5" (38mm) of accumulated precipitation. Throughout the year, in Reliance, there are 107.6 rainfall days, and 17.83" (453mm) of precipitation is accumulated.

Snowfall

In Reliance, snow does not fall in May through September.

Daylight

The average length of the day in August is 13h and 56min.
On the first day of August in Reliance, sunrise is at 6:27 am and sunset at 9:01 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 8:15 pm CDT.

Sunshine

In August, the average sunshine in Reliance is 11h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In August, a regular UV index of 6 translates into these guidelines:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot does it get in Reliance in August?

The high-temperature in Reliance, South Dakota, during August is 85.8°F (29.9°C) and the low-temperature is 63.7°F (17.6°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is estimated at 89.6°F (32°C).

What is the average humidity in August in Reliance?

In August, the average relative humidity in Reliance is 59%.

How many days does it rain in August in Reliance?

In Reliance, South Dakota, in August, during 11 rainfall days, 1.5" (38mm) of precipitation is typically accumulated.

When it does not snow in Reliance?

In Reliance, South Dakota, snow does not fall in May through September.

How many hours of daylight does Reliance have in August?

The average day length in August in Reliance is 13h and 56min.

When is the sunrise / sunset in August in Reliance?

On the first day of August in Reliance, sunrise is at 6:27 am and sunset at 9:01 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 8:15 pm CDT.

How long on average sun shines in August in Reliance?

The average sunshine duration in August in Reliance, South Dakota, is 11h.

When is the highest UV index in Reliance?

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

How high is the UV index in August in Reliance?

In Reliance, the average daily maximum UV index in August is 6. A UV Index estimate 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
Reliance, SD

Average temperature in August - Reliance, SD
  • Average high temperature in August: 85.8°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (26.1°F).

  • Average low temperature in August: 63.7°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).

Average pressure in August
Reliance, SD

Average pressure in August - Reliance, SD
  • Average pressure in August: 29.91"Hg

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

Average wind speed in August
Reliance, SD

Average wind speed in August - Reliance, SD
  • Average wind speed in August: 9.1mph

The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is August (9.1mph).

Average humidity in August
Reliance, SD

Average humidity in August - Reliance, SD
  • Average humidity in August: 59%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is September (58%).

Average rainfall in August
Reliance, SD

Average rainfall in August - Reliance, SD
  • Average rainfall in August: 1.5"

The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is November (0.55").

Average rainfall days in August
Reliance, SD

Average rainfall days in August - Reliance, SD
  • Average rainfall days in August: 11 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (3.3 days).

Average snowfall in August
Reliance, SD

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

The month with the highest snowfall is February (3.66").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Reliance, SD

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

The months with the highest number of snowfall days are January and February (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Reliance, 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 0min

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 42min).

Average sunshine days in August
Reliance, SD

Average sunshine days in August - Reliance, SD
  • Average sunshine days in August: 17.2 days

The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is April (11.8 days).

Average UV index in August
Reliance, SD

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

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is February (UV index 1).

Average cloud cover in August
Reliance, SD

Average cloud cover in August - Reliance, SD
  • Average cloud cover in August: 20

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 20).

Average visibility in August
Reliance, SD

Average visibility in August - Reliance, 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).

Reliance, South Dakota, USA

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