August weather forecast
Grand Rivers, KY

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Weather in August

The last month of the summer, August, is another tropical month in Grand Rivers, Kentucky, with an average temperature fluctuating between 87.1°F (30.6°C) and 67.5°F (19.7°C).

Temperature

August's weather records an average high-temperature of a still hot 87.1°F (30.6°C), showing little deviation from July. During August, Grand Rivers records a consistent average nighttime temperature of 67.5°F (19.7°C).

Heat index

In August, the average heat index is estimated at a sweltering 100.4°F (38°C). Implement more preventive measures, heat cramps and heat exhaustion are probable. Heatstroke might result from extended activity.
Understanding the heat index involves considering values for shaded locales with light wind. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In Grand Rivers, the average relative humidity in August is 75%.

Rainfall

In Grand Rivers, Kentucky, during August, the rain falls for 8.9 days and regularly aggregates up to 0.79" (20mm) of precipitation. In Grand Rivers, Kentucky, during the entire year, the rain falls for 94.8 days and collects up to 8.7" (221mm) of precipitation.

Snowfall

April through October are months without snowfall in Grand Rivers.

Daylight

In Grand Rivers, the average length of the day in August is 13h and 32min.
On the first day of August in Grand Rivers, sunrise is at 5:58 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:22 pm CDT.

Sunshine

In August, the average sunshine is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In August, the maximum UV index of 6 translates into these guidelines:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun 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 Grand Rivers?

During August, Grand Rivers experiences an average high-temperature of 87.1°F (30.6°C) and a low-temperature of 67.5°F (19.7°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is estimated at 100.4°F (38°C).

What is the average humidity in August in Grand Rivers?

In Grand Rivers, the average relative humidity in August is 75%.

How much does it rain in Grand Rivers in August?

In Grand Rivers, Kentucky, during August, the rain falls for 8.9 days and regularly aggregates up to 0.79" (20mm) of precipitation.

When it does not snow in Grand Rivers?

April through October are months without snowfall in Grand Rivers, Kentucky.

What is the average length of the day in August in Grand Rivers?

The average day length in August in Grand Rivers, Kentucky, is 13h and 32min.

When is the sunrise / sunset in August in Grand Rivers?

In August, on the first day of the month, sunrise is at 5:58 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:22 pm CDT.

How long on average sun shines in August in Grand Rivers?

In August, the average sunshine duration is 10.3h.

What are the months with the highest UV index in Grand Rivers?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Grand Rivers.

What is the UV index intensity in August in Grand Rivers?

The average daily maximum UV index in August in Grand Rivers 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
Grand Rivers, KY

Average temperature in August - Grand Rivers, KY
  • Average high temperature in August: 87.1°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41.7°F).

  • Average low temperature in August: 67.5°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

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Average pressure in August
Grand Rivers, KY

Average pressure in August - Grand Rivers, KY
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

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Average wind speed in August
Grand Rivers, KY

Average wind speed in August - Grand Rivers, KY
  • Average wind speed in August: 5.7mph

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).

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Average humidity in August
Grand Rivers, KY

Average humidity in August - Grand Rivers, KY
  • Average humidity in August: 75%

The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Grand Rivers, KY

Average rainfall in August - Grand Rivers, KY
  • Average rainfall in August: 0.79"

The wettest month (with the highest rainfall) is February (1.06").
The driest month (with the least rainfall) is September (0.28").

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Average rainfall days in August
Grand Rivers, KY

Average rainfall days in August - Grand Rivers, KY
  • Average rainfall days in August: 8.9 days

The month with the highest number of rainy days is July (10.7 days).
The month with the least rainy days is November (5.7 days).

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Average snowfall in August
Grand Rivers, KY

Average snowfall in August - Grand Rivers, KY
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in August
Grand Rivers, KY

Average snowfall days in August - Grand Rivers, KY
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (3.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Grand Rivers, KY

Average daylight in August / Average sunshine in August - Grand Rivers, KY
  • Average daylight in August: 13h and 3min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in August: 10h and 2min

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

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Average sunshine days in August
Grand Rivers, KY

Average sunshine days in August - Grand Rivers, KY
  • Average sunshine days in August: 18.5 days

The month with the most sunshine days is October (23.3 days).
The month with the least sunshine days is July (15.7 days).

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Average UV index in August
Grand Rivers, KY

Average UV index in August - Grand Rivers, KY
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in August
Grand Rivers, KY

Average cloud cover in August - Grand Rivers, KY
  • Average cloud cover in August: 29

The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 28).

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Average visibility in August
Grand Rivers, KY

Average visibility in August - Grand Rivers, KY
  • 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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Grand Rivers, Kentucky, USA

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