August weather forecast
Reva, SD

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Weather in August

The last month of the summer, August, is another warm month in Reva, South Dakota, with an average temperature ranging between max 82.9°F (28.3°C) and min 62.2°F (16.8°C).

Temperature

Reva's shift from July to August is accompanied by an average high-temperature of a still moderately hot 82.9°F (28.3°C), a slight deviation from 85.1°F (29.5°C). An average low-temperature of 62.2°F (16.8°C) is noted during the month of August.

Heat index

August's mean heat index is computed to be 84.2°F (29°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.
One should consider that heat index numbers are for shaded settings and light wind. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.

Humidity

With an average relative humidity of 47%, August is the least humid month in Reva.

Rainfall

In Reva, in August, during 10.4 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. Throughout the year, there are 103.8 rainfall days, and 14.88" (378mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In August, the average length of the day is 14h and 4min.
On the first day of the month, sunrise is at 5:37 am and sunset at 8:20 pm. On the last day of August, sunrise is at 6:13 am and sunset at 7:31 pm MDT.

Sunshine

August has the most sunshine of the year, with an average of 11.5h 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 value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The average daily UV index of 6 in August transforms into the following instructions:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.

Frequently asked questions

How hot does it get in August?

In August, the average high-temperature and low-temperature are 82.9°F (28.3°C) and 62.2°F (16.8°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 84.2°F (29°C).

What is the least humid month?

With an average relative humidity of 47%, August is the least humid month.

What is the average humidity in August?

The average relative humidity in August is 47%.

How much does it rain in Reva in August?

In August, the rain falls for 10.4 days. Throughout August, 1.3" (33mm) of precipitation is accumulated.

When it does not snow?

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

What is the average length of the day in August?

In Reva, the average day length in August is 14h and 4min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:37 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:13 am and sunset at 7:31 pm MDT.

What month has the most sunshine?

The month with the most sunshine is August, with an average of 11.5h of sunshine.

How many hours of sunshine does Reva have in August?

The average sunshine duration in August is 11.5h.

What are the months with the highest UV index?

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

How high is the UV index in August?

In Reva, 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 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
Reva, SD

Average temperature in August - Reva, SD
  • Average high temperature in August: 82.9°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in August: 62.2°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

Average pressure in August
Reva, SD

Average pressure in August - Reva, SD
  • Average pressure in August: 29.89"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

Average wind speed in August
Reva, SD

Average wind speed in August - Reva, SD
  • Average wind speed in August: 9.9mph

The windiest months (with the highest average wind speed) are January and October (11.9mph).
The calmest month (with the lowest average wind speed) is July (9.8mph).

Average humidity in August
Reva, SD

Average humidity in August - Reva, SD
  • Average humidity in August: 47%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (47%).

Average rainfall in August
Reva, SD

Average rainfall in August - Reva, SD
  • Average rainfall in August: 1.3"

The wettest month (with the highest rainfall) is May (2.68").
The driest months (with the least rainfall) are January and November (0.51").

Average rainfall days in August
Reva, SD

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

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

Average snowfall in August
Reva, SD

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

The month with the highest snowfall is March (4.37").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Reva, SD

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

The month with the highest number of snowfall days is February (12.3 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in August / Average sunshine in August - Reva, SD
  • Average daylight in August: 14h and 1min

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: 11h and 3min

The month with the most sunshine is August (Average sunshine: 11h and 30min).
The months with the least sunshine are January and February (Average sunshine: 5h and 0min).

Average sunshine days in August
Reva, SD

Average sunshine days in August - Reva, SD
  • Average sunshine days in August: 17.5 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is April (11.6 days).

Average UV index in August
Reva, SD

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

Average cloud cover in August
Reva, SD

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

The months with the most cloud cover are January and February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 18).

Average visibility in August
Reva, SD

Average visibility in August - Reva, 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).

Reva, South Dakota, USA

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