August weather forecast
Elvaston, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Elvaston, Illinois, with an average temperature varying between 64°F (17.8°C) and 82.8°F (28.2°C).

Temperature

As Elvaston welcomes August, the average high-temperature records at a still warm 82.8°F (28.2°C), marking an insignificant deviation from the prior month. In the month of August, Elvaston witnesses a consistent average low-temperature of 64°F (17.8°C).

Heat index

The heat index in August is evaluated at a tropical 89.6°F (32°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for 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

In Elvaston, the average relative humidity in August is 78%.

Rainfall

In Elvaston, during August, the rain falls for 11.5 days and regularly aggregates up to 1.77" (45mm) of precipitation. Throughout the year, in Elvaston, there are 129.9 rainfall days, and 20.71" (526mm) of precipitation is accumulated.

Snowfall

In Elvaston, snow does not fall in May through September.

Daylight

The average length of the day in August in Elvaston is 13h and 43min.
On the first day of the month, sunrise is at 6:03 am and sunset at 8:19 pm. On the last day of August, sunrise is at 6:32 am and sunset at 7:38 pm CDT.

Sunshine

In August, the average sunshine is 10.1h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In August, a regular UV index of 6 translates into these guidelines:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

How hot does it get in Elvaston in August?

The high-temperature in Elvaston, Illinois, during August is 82.8°F (28.2°C) and the low-temperature is 64°F (17.8°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 89.6°F (32°C).

What is the average humidity in August in Elvaston?

The average relative humidity in August in Elvaston is 78%.

How many days does it rain in August in Elvaston?

In Elvaston, Illinois, during August, the rain falls for 11.5 days and regularly aggregates up to 1.77" (45mm) of precipitation.

When it does not snow in Elvaston?

May through September are months without snowfall.

How many hours of daylight does Elvaston have in August?

The average day length in August in Elvaston, Illinois, is 13h and 43min.

What time are sunrise and sunset in August in Elvaston?

On the first day of August in Elvaston, sunrise is at 6:03 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:38 pm CDT.

How long on average sun shines in August in Elvaston?

In August, the average sunshine duration in Elvaston, Illinois, is 10.1h.

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

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

What is the UV index reading in August in Elvaston?

In August, the average daily maximum UV index in Elvaston is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health 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
Elvaston, IL

Average temperature in August - Elvaston, IL
  • Average high temperature in August: 82.8°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in August: 64°F

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).

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Average pressure in August
Elvaston, IL

Average pressure in August - Elvaston, IL
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in August
Elvaston, IL

Average wind speed in August - Elvaston, IL
  • Average wind speed in August: 6.6mph

The windiest months (with the highest average wind speed) are January and February (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in August
Elvaston, IL

Average humidity in August - Elvaston, IL
  • Average humidity in August: 78%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in August
Elvaston, IL

Average rainfall in August - Elvaston, IL
  • Average rainfall in August: 1.77"

The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is January (0.83").

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Average rainfall days in August
Elvaston, IL

Average rainfall days in August - Elvaston, IL
  • Average rainfall days in August: 11.5 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (4.5 days).

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Average snowfall in August
Elvaston, IL

Average snowfall in August - Elvaston, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.91").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Elvaston, IL

Average snowfall days in August - Elvaston, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (7.9 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
Elvaston, IL

Average daylight in August / Average sunshine in August - Elvaston, IL
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days in August
Elvaston, IL

Average sunshine days in August - Elvaston, IL
  • Average sunshine days in August: 17.5 days

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is June (11.5 days).

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Average UV index in August
Elvaston, IL

Average UV index in August - Elvaston, IL
  • Average UV index in August: 6

The months with the highest UV index are 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
Elvaston, IL

Average cloud cover in August - Elvaston, IL
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in August
Elvaston, IL

Average visibility in August - Elvaston, IL
  • 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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Elvaston, Illinois, USA

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