August weather forecast
Grandview, IN

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Weather in August

The last month of the summer, August, is another warm month in Grandview, Indiana, with an average temperature ranging between min 66°F (18.9°C) and max 84.7°F (29.3°C).

Temperature

Grandview's weather in August, with an average high-temperature of a still warm 84.7°F (29.3°C), subtly shifts from July's 85.6°F (29.8°C). An average nighttime temperature of 66°F (18.9°C) is observed during August.

Heat index

In August, the average heat index is appraised at a torrid 95°F (35°C). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The average relative humidity in August is 77%.

Rainfall

In Grandview, in August, during 13.8 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. Throughout the year, there are 158.3 rainfall days, and 31.3" (795mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Grandview.

Daylight

In August, the average length of the day is 13h and 35min.
On the first day of the month, sunrise is at 5:51 am and sunset at 7:56 pm. On the last day of August, sunrise is at 6:17 am and sunset at 7:18 pm CDT.

Sunshine

The months with the most sunshine are July and August, with an average of 10.6h of sunshine.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 6 in August converts into the following recommendations:
Deflect overexposure. Sun protection is a necessity. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

Frequently asked questions

How hot does it get in August?

During August, Grandview experiences an average high-temperature of 84.7°F (29.3°C) and a low-temperature of 66°F (18.9°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is appraised at 95°F (35°C).

What is the average humidity in August?

In August, the average relative humidity is 77%.

How much does it rain in August?

In Grandview, during August, the rain falls for 13.8 days and regularly aggregates up to 2.24" (57mm) of precipitation.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day in August?

The average day length in August is 13h and 35min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 5:51 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:18 pm CDT.

What is the month with the most sunshine?

The months with the most sunshine in Grandview are July and August, with an average of 10.6h of sunshine.

How long on average sun shines in August in Grandview?

The average sunshine duration in August is 10.6h.

What is the month with the highest UV index?

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

How high is the UV index in August?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health threat from unsafe 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
Grandview, IN

Average temperature in August - Grandview, IN
  • Average high temperature in August: 84.7°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in August: 66°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (27°F).

Average pressure in August
Grandview, IN

Average pressure in August - Grandview, IN
  • Average pressure in August: 29.99"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in August
Grandview, IN

Average wind speed in August - Grandview, IN
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is February (9.2mph).
The calmest month (with the lowest average wind speed) is July (5.4mph).

Average humidity in August
Grandview, IN

Average humidity in August - Grandview, IN
  • Average humidity in August: 77%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Grandview, IN

Average rainfall in August - Grandview, IN
  • Average rainfall in August: 2.24"

The wettest month (with the highest rainfall) is April (3.86").
The driest month (with the least rainfall) is September (1.46").

Average rainfall days in August
Grandview, IN

Average rainfall days in August - Grandview, IN
  • Average rainfall days in August: 13.8 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is November (9.9 days).

Average snowfall in August
Grandview, IN

Average snowfall in August - Grandview, IN
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.42").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Grandview, IN

Average snowfall days in August - Grandview, IN
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Grandview, IN

Average daylight in August / Average sunshine in August - Grandview, IN
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

Average sunshine days in August
Grandview, IN

Average sunshine days in August - Grandview, IN
  • Average sunshine days in August: 14.4 days

The month with the most sunshine days is October (19 days).
The month with the least sunshine days is May (10.6 days).

Average UV index in August
Grandview, IN

Average UV index in August - Grandview, IN
  • 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).

Average cloud cover in August
Grandview, IN

Average cloud cover in August - Grandview, IN
  • Average cloud cover in August: 27

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 27).

Average visibility in August
Grandview, IN

Average visibility in August - Grandview, IN
  • 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).

Grandview, Indiana, USA

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