August weather forecast
Herrick, SD

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Weather in August

The last month of the summer, August, is also a moderately hot month in Herrick, South Dakota, with an average temperature fluctuating between 63.9°F (17.7°C) and 85.8°F (29.9°C).

Temperature

Entering August, Herrick's average high-temperature reads a moderately hot 85.8°F (29.9°C), indicating a close resemblance to the previous month's climate. Following the sharp contrast to daytime warmth, an average nighttime temperature of 63.9°F (17.7°C) gets registered during August.

Heat index

For most parts of August, the heat index is calculated to be a hot 89.6°F (32°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.

Humidity

The months with the lowest humidity are August and September, with an average relative humidity of 57%.

Rainfall

In Herrick, in August, during 11.8 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. Throughout the year, in Herrick, there are 103.9 rainfall days, and 16.85" (428mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Herrick.

Daylight

In August, the average length of the day is 13h and 53min.
On the first day of the month, sunrise is at 6:28 am and sunset at 8:57 pm. On the last day of August, sunrise is at 7:00 am and sunset at 8:12 pm CDT.

Sunshine

In August, the average sunshine in Herrick is 11h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 6 in August translates into these instructions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
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Frequently asked questions

How hot is August in Herrick?

The high-temperature, in August, in Herrick, records 85.8°F (29.9°C), while the low-temperature is 63.9°F (17.7°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is calculated to be 89.6°F (32°C).

What is the least humid month in Herrick?

The months with the lowest humidity in Herrick are August and September, with an average relative humidity of 57%.

What is the average humidity in August in Herrick?

In Herrick, the average relative humidity in August is 57%.

How much does it rain in Herrick in August?

In Herrick, South Dakota, in August, it is raining for 11.8 days, with typically 1.46" (37mm) of accumulated precipitation.

When it does not snow in Herrick?

June through September are months without snowfall in Herrick.

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

The average day length in August in Herrick, South Dakota, is 13h and 53min.

When is the sunrise / sunset in August in Herrick?

In August, on the first day of the month, sunrise is at 6:28 am and sunset at 8:57 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 8:12 pm CDT.

How long on average sun shines in August in Herrick?

In August, the average sunshine duration is 11h.

When is the highest UV index in Herrick?

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

What is the UV index reading in August in Herrick?

The average daily maximum UV index in August in Herrick is 6. A UV Index reading of 6 to 7 represents a high hazard to health 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
Herrick, SD

Average temperature in August - Herrick, SD
  • Average high temperature in August: 85.8°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in August: 63.9°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).

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Average pressure in August
Herrick, SD

Average pressure in August - Herrick, SD
  • Average pressure in August: 29.91"Hg

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

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Average wind speed in August
Herrick, SD

Average wind speed in August - Herrick, SD
  • Average wind speed in August: 9.8mph

The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).

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Average humidity in August
Herrick, SD

Average humidity in August - Herrick, SD
  • Average humidity in August: 57%

The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are August and September (57%).

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Average rainfall in August
Herrick, SD

Average rainfall in August - Herrick, SD
  • Average rainfall in August: 1.46"

The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.47").

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Average rainfall days in August
Herrick, SD

Average rainfall days in August - Herrick, SD
  • Average rainfall days in August: 11.8 days

The month with the highest number of rainy days is June (15.3 days).
The months with the least rainy days are January and February (2.7 days).

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Average snowfall in August
Herrick, SD

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

The month with the highest snowfall is December (3.19").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Herrick, SD

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

The month with the highest number of snowfall days is January (9.6 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
Herrick, SD

Average daylight in August / Average sunshine in August - Herrick, SD
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in August: 11h and 0min

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 54min).

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Average sunshine days in August
Herrick, SD

Average sunshine days in August - Herrick, SD
  • Average sunshine days in August: 15.4 days

The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.2 days).

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Average UV index in August
Herrick, SD

Average UV index in August - Herrick, SD
  • Average UV index in August: 6

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

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Average cloud cover in August
Herrick, SD

Average cloud cover in August - Herrick, SD
  • Average cloud cover in August: 20

The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 20).

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Average visibility in August
Herrick, SD

Average visibility in August - Herrick, 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).

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Herrick, South Dakota, USA

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