August weather forecast
Metropolis, IL

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Weather in August

August, the last month of the summer in Metropolis, is also a hot month, with an average temperature varying between 86.7°F (30.4°C) and 67.3°F (19.6°C).

Temperature

July's transformation into August witnesses an average high-temperature of a still hot 86.7°F (30.4°C), noting a minor change from the preceding month. The low-temperature averages to an enjoyable 67.3°F (19.6°C) during the nights of August.

Heat index

For August, the heat index is calculated to be a torrid 98.6°F (37°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

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

Rainfall

In August, the rain falls for 14.6 days. Throughout August, 2.68" (68mm) of precipitation is accumulated. In Metropolis, during the entire year, the rain falls for 160.7 days and collects up to 36.73" (933mm) of precipitation.

Snowfall

In Metropolis, Illinois, snow does not fall in May through October.

Daylight

The average length of the day in August is 13h and 32min.
On the first day of the month, sunrise is at 6:00 am and sunset at 8:01 pm. On the last day of August, sunrise is at 6:25 am and sunset at 7:24 pm CDT.

Sunshine

In Metropolis, the average sunshine in August is 10.4h.

UV index

The months with the highest UV index in Metropolis are May through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 6 in August translates into this advice:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. 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. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
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Frequently asked questions

Is it hot in Metropolis during August?

An average high-temperature, in August, in Metropolis, is 86.7°F (30.4°C) and the average low-temperature is 67.3°F (19.6°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 98.6°F (37°C).

What is the average humidity in August in Metropolis?

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

How many days does it rain in August in Metropolis?

In Metropolis, in August, during 14.6 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

When it does not snow in Metropolis?

In Metropolis, snow does not fall in May through October.

How many hours of daylight does Metropolis have in August?

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

When is the sunrise / sunset in August in Metropolis?

In August, on the first day of the month, sunrise is at 6:00 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:24 pm CDT.

How many hours of sunshine does Metropolis have in August?

The average sunshine duration in August is 10.4h.

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

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

What is the UV index reading in August in Metropolis?

The average daily maximum UV index in August in Metropolis is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to the Sun's 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
Metropolis, IL

Average temperature in August - Metropolis, IL
  • Average high temperature in August: 86.7°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 (41.4°F).

  • Average low temperature in August: 67.3°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°F).

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Average pressure in August
Metropolis, IL

Average pressure in August - Metropolis, IL
  • Average pressure in August: 29.98"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
Metropolis, IL

Average wind speed in August - Metropolis, IL
  • Average wind speed in August: 5.6mph

The windiest months (with the highest average wind speed) are January, March and April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).

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Average humidity in August
Metropolis, IL

Average humidity in August - Metropolis, IL
  • 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 (70%).

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Average rainfall in August
Metropolis, IL

Average rainfall in August - Metropolis, IL
  • Average rainfall in August: 2.68"

The wettest month (with the highest rainfall) is April (4.29").
The driest month (with the least rainfall) is September (1.5").

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Average rainfall days in August
Metropolis, IL

Average rainfall days in August - Metropolis, IL
  • Average rainfall days in August: 14.6 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is October (10.2 days).

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Average snowfall in August
Metropolis, IL

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

The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Metropolis, IL

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

The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Metropolis, IL

Average daylight in August / Average sunshine in August - Metropolis, IL
  • 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 months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

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Average sunshine days in August
Metropolis, IL

Average sunshine days in August - Metropolis, IL
  • Average sunshine days in August: 14.4 days

The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is May (11 days).

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Average UV index in August
Metropolis, IL

Average UV index in August - Metropolis, IL
  • 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
Metropolis, IL

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

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is September (Cloud cover 26).

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Average visibility in August
Metropolis, IL

Average visibility in August - Metropolis, 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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Metropolis, Illinois, USA

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