August weather forecast
Gregory, SD

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Weather in August

The last month of the summer, August, is another warm month in Gregory, South Dakota, with an average temperature varying between 85.8°F (29.9°C) and 63.9°F (17.7°C).

Temperature

Gregory's shift into August is marked by a subtle change to a warm 85.8°F (29.9°C) from July's 88°F (31.1°C) in temperature. Gregory registers a marked temperature plunge to a refreshing 63.9°F (17.7°C) during the cool August nights.

Heat index

The heat index for August is evaluated at a tropical 89.6°F (32°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.
Always consider that heat index estimations are for light winds and places in the shade. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', quantifies the warmth felt when relative humidity is considered. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.

Humidity

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

Rainfall

In August, in Gregory, the rain falls for 11.8 days. Throughout August, 1.46" (37mm) of precipitation is accumulated. Throughout the year, in Gregory, there are 103.9 rainfall days, and 16.85" (428mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Gregory, the average length of the day in August is 13h and 54min.
On the first day of August in Gregory, sunrise is at 6:28 am and sunset at 8:59 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 8:13 pm CDT.

Sunshine

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

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 6 during August leads to these instructions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

Is it hot in Gregory during August?

In August, the average high-temperature and low-temperature in Gregory are 85.8°F (29.9°C) and 63.9°F (17.7°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in August is evaluated at 89.6°F (32°C).

What are the least humid months in Gregory?

August and September, with an average relative humidity of 57%, are the least humid months in Gregory, South Dakota.

What is the average humidity in August in Gregory?

In August, the average relative humidity is 57%.

How much does it rain in Gregory in August?

In August, in Gregory, the rain falls for 11.8 days. Throughout August, 1.46" (37mm) of precipitation is accumulated.

When it does not snow in Gregory?

In Gregory, South Dakota, snow does not fall in June through September.

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

The average day length in August in Gregory is 13h and 54min.

When are sunrise and sunset in August in Gregory?

On the first day of August in Gregory, sunrise is at 6:28 am and sunset at 8:59 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 8:13 pm CDT.

How long on average sun shines in August in Gregory?

In Gregory, South Dakota, the average sunshine duration in August is 11h.

What are the months with the highest UV index in Gregory?

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

What is the UV index reading in August in Gregory?

In August, the average daily maximum UV index in Gregory, South Dakota, is 6. A UV Index estimate of 6 to 7 represents a high hazard to health 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
Gregory, SD

Average temperature in August - Gregory, 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
Gregory, SD

Average pressure in August - Gregory, 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
Gregory, SD

Average wind speed in August - Gregory, 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
Gregory, SD

Average humidity in August - Gregory, 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
Gregory, SD

Average rainfall in August - Gregory, 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
Gregory, SD

Average rainfall days in August - Gregory, 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
Gregory, SD

Average snowfall in August - Gregory, 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
Gregory, SD

Average snowfall days in August - Gregory, 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
Gregory, SD

Average daylight in August / Average sunshine in August - Gregory, 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 0min).

  • 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
Gregory, SD

Average sunshine days in August - Gregory, 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
Gregory, SD

Average UV index in August - Gregory, 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
Gregory, SD

Average cloud cover in August - Gregory, 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
Gregory, SD

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

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