August weather forecast
Astoria, SD

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Weather in August

The last month of the summer, August, is also a moderately hot month in Astoria, South Dakota, with an average temperature varying between 80.1°F (26.7°C) and 59.5°F (15.3°C).

Temperature

Astoria, South Dakota, signifies an average high-temperature of a still warm 80.1°F (26.7°C) in August, closely mirroring the 81.1°F (27.3°C) of July. Astoria reports a consistent average low-temperature of 59.5°F (15.3°C) throughout August nights.

Humidity

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

Rainfall

In Astoria, during August, the rain falls for 11.9 days and regularly aggregates up to 1.5" (38mm) of precipitation. In Astoria, during the entire year, the rain falls for 101.9 days and collects up to 14.61" (371mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in August in Astoria is 13h and 59min.
On the first day of the month, sunrise is at 6:13 am and sunset at 8:51 pm. On the last day of August, sunrise is at 6:48 am and sunset at 8:03 pm CDT.

Sunshine

The average sunshine in August is 10.3h.

UV index

In August, the average daily maximum UV index in Astoria is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 5 during August translates into these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Always opt for UVA and UVB-resistant sunglasses on radiant days.
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Frequently asked questions

What are August temperatures in Astoria?

An average high-temperature, in August, in Astoria, is 80.1°F (26.7°C) and the average low-temperature is 59.5°F (15.3°C). In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is estimated at 86°F (30°C).

What is the average humidity in August in Astoria?

The average relative humidity in August in Astoria, South Dakota, is 72%.

How much does it rain in Astoria in August?

In Astoria, South Dakota, in August, it is raining for 11.9 days, with typically 1.5" (38mm) of accumulated precipitation.

When it does not snow in Astoria?

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

How many hours of daylight does Astoria have in August?

In Astoria, the average day length in August is 13h and 59min.

When are sunrise and sunset in August in Astoria?

In August, on the first day of the month, sunrise is at 6:13 am and sunset at 8:51 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 8:03 pm CDT.

How many hours of sunshine does Astoria have in August?

In Astoria, South Dakota, the average sunshine duration in August is 10.3h.

What is the UV index intensity in August in Astoria?

In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Astoria, SD

Average temperature in August - Astoria, SD
  • Average high temperature in August: 80.1°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (20.5°F).

  • Average low temperature in August: 59.5°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (7.2°F).

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Average pressure in August
Astoria, SD

Average pressure in August - Astoria, 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).

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Average wind speed in August
Astoria, SD

Average wind speed in August - Astoria, SD
  • Average wind speed in August: 8.1mph

The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (8mph).

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Average humidity in August
Astoria, SD

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

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (67%).

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Average rainfall in August
Astoria, SD

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

The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in August
Astoria, SD

Average rainfall days in August - Astoria, SD
  • Average rainfall days in August: 11.9 days

The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (1.7 days).

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Average snowfall in August
Astoria, SD

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

The month with the highest snowfall is February (3.27").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Astoria, SD

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

The month with the highest number of snowfall days is January (11.3 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
Astoria, SD

Average daylight in August / Average sunshine in August - Astoria, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in August
Astoria, SD

Average sunshine days in August - Astoria, SD
  • Average sunshine days in August: 16.6 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (11.3 days).

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Average UV index in August
Astoria, SD

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

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

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Average cloud cover in August
Astoria, SD

Average cloud cover in August - Astoria, SD
  • Average cloud cover in August: 26

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in August
Astoria, SD

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

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