August weather forecast
Glenham, SD

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Weather in August

August, the last month of the summer in Glenham, is another warm month, with an average temperature ranging between max 84.2°F (29°C) and min 63.3°F (17.4°C).

Temperature

The shift into August reveals an average high-temperature of a moderately hot 84.2°F (29°C), closely mirroring July's climate. The mean low-temperature during August nights in Glenham, South Dakota, is a comfortable 63.3°F (17.4°C).

Heat index

In August, the average heat index is calculated to be a tropical 86°F (30°C). Prolonged activity during exposure might result in a state of fatigue and cause heat cramps.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an estimation of the warmth sensation when considering humidity levels. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.

Humidity

With an average relative humidity of 52%, August is the least humid month.

Rainfall

In Glenham, in August, during 10.4 rainfall days, 1.18" (30mm) of precipitation is typically accumulated. In Glenham, during the entire year, the rain falls for 89.4 days and collects up to 15.39" (391mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

The average length of the day in August is 14h and 3min.
On the first day of August in Glenham, sunrise is at 6:25 am and sunset at 9:08 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 8:20 pm CDT.

Sunshine

The average sunshine in August is 10.9h.

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 threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 6 during August translates into the following directions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

How hot is August in Glenham?

The high-temperature, in August, in Glenham, is 84.2°F (29°C), while the low-temperature averages to 63.3°F (17.4°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in August is calculated to be 86°F (30°C).

What is the least humid month in Glenham?

The least humid month in Glenham, South Dakota, is August, with an average relative humidity of 52%.

What is the average humidity in August in Glenham?

The average relative humidity in August in Glenham, South Dakota, is 52%.

How many days does it rain in August in Glenham?

In Glenham, during August, the rain falls for 10.4 days and regularly aggregates up to 1.18" (30mm) of precipitation.

When it does not snow in Glenham?

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

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

In Glenham, the average day length in August is 14h and 3min.

When is the sunrise / sunset in August in Glenham?

In August, on the first day of the month, sunrise is at 6:25 am and sunset at 9:08 pm. On the last day of the month, in Glenham, South Dakota, sunrise is at 7:02 am and sunset at 8:20 pm CDT.

How many hours of sunshine does Glenham have in August?

In August, the average sunshine duration in Glenham is 10.9h.

What is the month with the highest UV index in Glenham?

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

What is the UV index intensity in August in Glenham?

The average daily maximum UV index in August in Glenham is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability 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
Glenham, SD

Average temperature in August - Glenham, SD
  • Average high temperature in August: 84.2°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (23°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (9°F).

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Average pressure in August
Glenham, SD

Average pressure in August - Glenham, SD
  • Average pressure in August: 29.9"Hg

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

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Average wind speed in August
Glenham, SD

Average wind speed in August - Glenham, SD
  • Average wind speed in August: 9.5mph

The windiest month (with the highest average wind speed) is April (11.5mph).
The calmest month (with the lowest average wind speed) is February (9.4mph).

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Average humidity in August
Glenham, SD

Average humidity in August - Glenham, SD
  • Average humidity in August: 52%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (52%).

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Average rainfall in August
Glenham, SD

Average rainfall in August - Glenham, SD
  • Average rainfall in August: 1.18"

The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in August
Glenham, SD

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

The month with the highest number of rainy days is June (13.8 days).
The month with the least rainy days is February (1.3 days).

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Average snowfall in August
Glenham, SD

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

The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Glenham, SD

Average snowfall days in August - Glenham, 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).

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

Average daylight in August / Average sunshine in August - Glenham, 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: 10h and 5min

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 6min).

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Average sunshine days in August
Glenham, SD

Average sunshine days in August - Glenham, SD
  • Average sunshine days in August: 18 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.6 days).

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Average UV index in August
Glenham, SD

Average UV index in August - Glenham, 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 January and December (UV index 1).

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Average cloud cover in August
Glenham, SD

Average cloud cover in August - Glenham, SD
  • Average cloud cover in August: 21

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 21).

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Average visibility in August
Glenham, SD

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

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