August weather forecast
Sinai, SD

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Weather in August

August, the last month of the summer in Sinai, is also a moderately hot month, with an average temperature ranging between max 80.2°F (26.8°C) and min 59.2°F (15.1°C).

Temperature

August notes an average high-temperature of a still warm 80.2°F (26.8°C), subtly differing from July's 81.3°F (27.4°C). Throughout the nights in August, an average low-temperature of 59.2°F (15.1°C) is noted.

Humidity

In Sinai, the average relative humidity in August is 72%.

Rainfall

In August, in Sinai, the rain falls for 14.3 days. Throughout August, 2.24" (57mm) of precipitation is accumulated. Throughout the year, there are 125.5 rainfall days, and 21.65" (550mm) of precipitation is accumulated.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 58min.
On the first day of August, sunrise is at 6:16 am and sunset at 8:52 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 8:05 pm CDT.

Sunshine

In August, the average sunshine is 10.2h.

UV index

The average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 5 in August, converts into the following recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are August temperatures in Sinai?

During August, Sinai experiences an average high-temperature of 80.2°F (26.8°C) and a low-temperature of 59.2°F (15.1°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, is estimated at 86°F (30°C).

What is the average humidity in August in Sinai?

In Sinai, the average relative humidity in August is 72%.

How much does it rain in Sinai in August?

In Sinai, during August, the rain falls for 14.3 days and regularly aggregates up to 2.24" (57mm) of precipitation.

When it does not snow in Sinai?

June through September are months without snowfall.

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

In Sinai, the average day length in August is 13h and 58min.

When are sunrise and sunset in August in Sinai?

In August, on the first day of the month, sunrise is at 6:16 am and sunset at 8:52 pm. On the last day of the month, in Sinai, sunrise is at 6:50 am and sunset at 8:05 pm CDT.

How long on average sun shines in August in Sinai?

In August, the average sunshine duration in Sinai is 10.2h.

How high is the UV index in August in Sinai?

In August, the average daily maximum UV index in Sinai, South Dakota, is 5. A UV Index reading of 3 to 5 represents a medium hazard to health 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
Sinai, SD

Average temperature in August - Sinai, SD
  • Average high temperature in August: 80.2°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (20.7°F).

  • Average low temperature in August: 59.2°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (7°F).

Average pressure in August
Sinai, SD

Average pressure in August - Sinai, SD
  • Average pressure in August: 29.93"Hg

The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in August
Sinai, SD

Average wind speed in August - Sinai, SD
  • Average wind speed in August: 8.5mph

The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is July (8.4mph).

Average humidity in August
Sinai, SD

Average humidity in August - Sinai, SD
  • Average humidity in August: 72%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (68%).

Average rainfall in August
Sinai, SD

Average rainfall in August - Sinai, SD
  • Average rainfall in August: 2.24"

The wettest month (with the highest rainfall) is June (3.46").
The driest month (with the least rainfall) is November (0.67").

Average rainfall days in August
Sinai, SD

Average rainfall days in August - Sinai, SD
  • Average rainfall days in August: 14.3 days

The month with the highest number of rainy days is June (19.8 days).
The month with the least rainy days is January (3.2 days).

Average snowfall in August
Sinai, SD

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

The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Sinai, SD

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

The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Sinai, 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: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in August
Sinai, SD

Average sunshine days in August - Sinai, SD
  • Average sunshine days in August: 14.5 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (8.3 days).

Average UV index in August
Sinai, SD

Average UV index in August - Sinai, SD
  • Average UV index in August: 5

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

Average cloud cover in August
Sinai, SD

Average cloud cover in August - Sinai, SD
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are July and August (Cloud cover 28).

Average visibility in August
Sinai, SD

Average visibility in August - Sinai, 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).

Sinai, South Dakota, USA

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