August weather forecast
Grain Valley, MO

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Weather in August

August, the last month of the summer in Grain Valley, is another warm month, with an average temperature fluctuating between 84.6°F (29.2°C) and 65.8°F (18.8°C).

Temperature

August experiences an average high-temperature of a warm 84.6°F (29.2°C), barely different from July's 86.4°F (30.2°C). Grain Valley records an average low-temperature of 65.8°F (18.8°C) throughout the month of August.

Heat index

The heat index value during August is evaluated at a tropical 93.2°F (34°C). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Heat index specifics point out values are for conditions of shade and a slight breeze. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. 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.

Humidity

The average relative humidity in August in Grain Valley is 76%.

Rainfall

In Grain Valley, in August, during 14.3 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. Throughout the year, in Grain Valley, Missouri, there are 136.1 rainfall days, and 28.78" (731mm) of precipitation is accumulated.

Snowfall

In Grain Valley, Missouri, snow does not fall in June through September.

Daylight

In August, the average length of the day is 13h and 38min.
On the first day of the month, sunrise is at 6:18 am and sunset at 8:27 pm. On the last day of August, in Grain Valley, sunrise is at 6:45 am and sunset at 7:48 pm CDT.

Sunshine

In Grain Valley, the average sunshine in August is 10h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In August, a regular UV index of 6 translates into these guidelines:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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Frequently asked questions

How hot does it get in Grain Valley in August?

An average high-temperature, in August, in Grain Valley, is 84.6°F (29.2°C) and the average low-temperature is 65.8°F (18.8°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 93.2°F (34°C).

What is the average humidity in August in Grain Valley?

The average relative humidity in August in Grain Valley is 76%.

How much does it rain in Grain Valley in August?

In Grain Valley, Missouri, in August, during 14.3 rainfall days, 2.91" (74mm) of precipitation is typically accumulated.

When it does not snow in Grain Valley?

June through September are months without snowfall in Grain Valley, Missouri.

How many hours of daylight does Grain Valley have in August?

The average day length in August is 13h and 38min.

When are sunrise and sunset in August in Grain Valley?

On the first day of August in Grain Valley, Missouri, sunrise is at 6:18 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 7:48 pm CDT.

How many hours of sunshine does Grain Valley have in August?

In Grain Valley, the average sunshine duration in August is 10h.

What are the months with the highest UV index in Grain Valley?

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

What is the UV index intensity in August in Grain Valley?

In August, the average daily maximum UV index in Grain Valley is 6. A UV Index estimate of 6 to 7 represents a high health threat 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
Grain Valley, MO

Average temperature in August - Grain Valley, MO
  • Average high temperature in August: 84.6°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 (37°F).

  • Average low temperature in August: 65.8°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

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Average pressure in August
Grain Valley, MO

Average pressure in August - Grain Valley, MO
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

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Average wind speed in August
Grain Valley, MO

Average wind speed in August - Grain Valley, MO
  • Average wind speed in August: 6.3mph

The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in August
Grain Valley, MO

Average humidity in August - Grain Valley, MO
  • Average humidity in August: 76%

The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in August
Grain Valley, MO

Average rainfall in August - Grain Valley, MO
  • Average rainfall in August: 2.91"

The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is January (1.06").

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Average rainfall days in August
Grain Valley, MO

Average rainfall days in August - Grain Valley, MO
  • Average rainfall days in August: 14.3 days

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (5.2 days).

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Average snowfall in August
Grain Valley, MO

Average snowfall in August - Grain Valley, MO
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.9").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Grain Valley, MO

Average snowfall days in August - Grain Valley, MO
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (6.6 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
Grain Valley, MO

Average daylight in August / Average sunshine in August - Grain Valley, MO
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 10h and 0min

The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).

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Average sunshine days in August
Grain Valley, MO

Average sunshine days in August - Grain Valley, MO
  • Average sunshine days in August: 13.9 days

The month with the most sunshine days is December (21.8 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in August
Grain Valley, MO

Average UV index in August - Grain Valley, MO
  • 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, November and December (UV index 2).

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Average cloud cover in August
Grain Valley, MO

Average cloud cover in August - Grain Valley, MO
  • Average cloud cover in August: 28

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in August
Grain Valley, MO

Average visibility in August - Grain Valley, MO
  • 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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Grain Valley, Missouri, USA

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