August weather forecast
Flandreau, SD

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Weather in August

August maintains the summer momentum in Flandreau with warm weather prevailing throughout. However, there is a small decline in the maximum temperatures compared to July. The pattern of rainfall starts to decrease with 2.01" (51mm) of rainfall collected. By the end of the month, residents start noticing a slight reduction in daylight hours, heralding the approaching fall season.

Temperature

The advent of August presents an average high-temperature of a still moderately hot 79.9°F (26.6°C), maintaining a close correlation with the preceding month. Flandreau registers a consistent average low-temperature of 59.2°F (15.1°C) during August.

Humidity

In August, the average relative humidity is 73%.

Rainfall

In August, the rain falls for 12.8 days. Throughout August, 2.01" (51mm) of precipitation is accumulated. In Flandreau, during the entire year, the rain falls for 113.8 days and collects up to 20.59" (523mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in August is 13h and 57min.
On the first day of the month, sunrise is at 6:15 am and sunset at 8:50 pm. On the last day of August, sunrise is at 6:49 am and sunset at 8:03 pm CDT.

Sunshine

In August, the average sunshine is 10h.

UV index

The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: In August, the maximum UV index of 5 translates into these guidelines:
Undertake precautions - Obligation exists to protect against skin and eye damage. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Updated: Aug 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in August?

During August, Flandreau experiences an average high-temperature of 79.9°F (26.6°C) and a low-temperature of 59.2°F (15.1°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in July is estimated at 86°F (30°C).

What is the average humidity in August?

The average relative humidity in August is 73%.

How many days does it rain in August?

In Flandreau, in August, during 12.8 rainfall days, 2.01" (51mm) of precipitation is typically accumulated.

When it does not snow in Flandreau?

June through September are months without snowfall.

What is the average length of the day in August?

In August, the average day length in Flandreau is 13h and 57min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:15 am and sunset at 8:50 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 8:03 pm CDT.

How many hours of sunshine does Flandreau have in August?

In Flandreau, the average sunshine duration in August is 10h.

How high is the UV index in August?

The average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate health threat 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
Flandreau, SD

Average temperature in August - Flandreau, SD
  • Average high temperature in August: 79.9°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 (21.6°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 (7.7°F).

Average pressure in August
Flandreau, SD

Average pressure in August - Flandreau, 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
Flandreau, SD

Average wind speed in August - Flandreau, SD
  • Average wind speed in August: 8.4mph

The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest month (with the lowest average wind speed) is July (8.3mph).

Average humidity in August
Flandreau, SD

Average humidity in August - Flandreau, SD
  • Average humidity in August: 73%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (68%).

Average rainfall in August
Flandreau, SD

Average rainfall in August - Flandreau, SD
  • Average rainfall in August: 2.01"

The wettest month (with the highest rainfall) is June (3.15").
The driest months (with the least rainfall) are January and November (0.63").

Average rainfall days in August
Flandreau, SD

Average rainfall days in August - Flandreau, SD
  • Average rainfall days in August: 12.8 days

The month with the highest number of rainy days is June (17.6 days).
The month with the least rainy days is February (2.4 days).

Average snowfall in August
Flandreau, SD

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

The month with the highest snowfall is December (4.8").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Flandreau, SD

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

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

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: 10h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in August
Flandreau, SD

Average sunshine days in August - Flandreau, SD
  • Average sunshine days in August: 15.1 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (10.3 days).

Average UV index in August
Flandreau, SD

Average UV index in August - Flandreau, 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, November and December (UV index 1).

Average cloud cover in August
Flandreau, SD

Average cloud cover in August - Flandreau, SD
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in August
Flandreau, SD

Average visibility in August - Flandreau, 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).

Flandreau, South Dakota, USA

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