August weather forecast
Greenville, MO

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Weather in August

The last month of the summer, August, is also a hot month in Greenville, Missouri, with an average temperature fluctuating between 87.4°F (30.8°C) and 67.1°F (19.5°C).

Temperature

The dawn of August sees an average high-temperature of a still tropical 87.4°F (30.8°C), subtly contrasting with July's 88.5°F (31.4°C). Throughout August, the temperature tends to fall to a consistent average low of 67.1°F (19.5°C).

Heat index

The heat index for August is estimated at a very hot 102.2°F (39°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. 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 relevant to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in August is 75%.

Rainfall

In Greenville, in August, during 14.3 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. In Greenville, during the entire year, the rain falls for 156.7 days and collects up to 37.44" (951mm) of precipitation.

Snowfall

April through September are months without snowfall in Greenville.

Daylight

The average length of the day in August is 13h and 32min.
On the first day of August, sunrise is at 6:07 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:31 pm CDT.

Sunshine

The average sunshine in August in Greenville, Missouri, is 10.5h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Greenville, Missouri. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: In August, the maximum UV index of 6 suggests this advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
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Frequently asked questions

How hot is it in Greenville in August?

The high-temperature, in August, in Greenville, records 87.4°F (30.8°C), while the low-temperature is 67.1°F (19.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, is estimated at 102.2°F (39°C).

What is the average humidity in August in Greenville?

The average relative humidity in August in Greenville is 75%.

How many days does it rain in August in Greenville?

In August, the rain falls for 14.3 days. Throughout August, 2.87" (73mm) of precipitation is accumulated.

When it does not snow in Greenville?

In Greenville, snow does not fall in April through September.

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

In Greenville, the average day length in August is 13h and 32min.

What time are sunrise and sunset in August in Greenville?

On the first day of August in Greenville, sunrise is at 6:07 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:31 pm CDT.

How long on average sun shines in August in Greenville?

The average sunshine duration in August in Greenville, Missouri, is 10.5h.

What is the month with the highest UV index in Greenville?

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 Greenville?

The average daily maximum UV index in August in Greenville is 6. A UV Index value of 6 to 7 symbolizes a high health risk 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
Greenville, MO

Average temperature in August - Greenville, MO
  • Average high temperature in August: 87.4°F

The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (42.1°F).

  • Average low temperature in August: 67.1°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (28°F).

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Average pressure in August
Greenville, MO

Average pressure in August - Greenville, MO
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in August
Greenville, MO

Average wind speed in August - Greenville, MO
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is February (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in August
Greenville, MO

Average humidity in August - Greenville, MO
  • Average humidity in August: 75%

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

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Average rainfall in August
Greenville, MO

Average rainfall in August - Greenville, MO
  • Average rainfall in August: 2.87"

The wettest month (with the highest rainfall) is April (4.8").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days in August
Greenville, MO

Average rainfall days in August - Greenville, MO
  • Average rainfall days in August: 14.3 days

The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (9.6 days).

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Average snowfall in August
Greenville, MO

Average snowfall in August - Greenville, MO
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.69").
The months with the least snowfall are April, May, June, July, August and September (0").

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Average snowfall days in August
Greenville, MO

Average snowfall days in August - Greenville, MO
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (3.3 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
Greenville, MO

Average daylight in August / Average sunshine in August - Greenville, MO
  • 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 3min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in August
Greenville, MO

Average sunshine days in August - Greenville, MO
  • Average sunshine days in August: 14.3 days

The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is July (12.3 days).

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Average UV index in August
Greenville, MO

Average UV index in August - Greenville, 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 and December (UV index 2).

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Average cloud cover in August
Greenville, MO

Average cloud cover in August - Greenville, MO
  • Average cloud cover in August: 27

The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 26).

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Average visibility in August
Greenville, MO

Average visibility in August - Greenville, 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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Greenville, Missouri, USA

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