August weather forecast
Carol Stream, IL

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Weather in August

The last month of the summer, August, is another warm month in Carol Stream, Illinois, with an average temperature fluctuating between 80.2°F (26.8°C) and 63.7°F (17.6°C).

Temperature

Carol Stream, Illinois, notes an average high-temperature of a still moderately hot 80.2°F (26.8°C) in August, hardly diverging from July. In Carol Stream, the average temperature during the nights of August drops to a refreshing 63.7°F (17.6°C).

Humidity

The average relative humidity in August in Carol Stream is 78%.

Rainfall

In Carol Stream, Illinois, in August, it is raining for 12.1 days, with typically 0.94" (24mm) of accumulated precipitation. Throughout the year, there are 119.1 rainfall days, and 10.83" (275mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In Carol Stream, Illinois, the average length of the day in August is 13h and 49min.
On the first day of the month, sunrise is at 5:47 am and sunset at 8:10 pm. On the last day of August, in Carol Stream, sunrise is at 6:18 am and sunset at 7:27 pm CDT.

Sunshine

July and August, with an average of 9.9h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index in Carol Stream are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in August leads to these recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
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Frequently asked questions

What is the temperature in August in Carol Stream?

The high-temperature, in August, in Carol Stream, is 80.2°F (26.8°C), while the low-temperature averages to 63.7°F (17.6°C). In July, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is computed to be 87.8°F (31°C).

What is the average humidity in August in Carol Stream?

The average relative humidity in August in Carol Stream, Illinois, is 78%.

How much does it rain in Carol Stream in August?

In August, in Carol Stream, Illinois, the rain falls for 12.1 days. Throughout August, 0.94" (24mm) of precipitation is accumulated.

When it does not snow in Carol Stream?

In Carol Stream, Illinois, snow does not fall in May through September.

What is the average length of the day in August in Carol Stream?

In August, the average day length in Carol Stream is 13h and 49min.

When is the sunrise / sunset in August in Carol Stream?

In August, on the first day of the month, sunrise is at 5:47 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 7:27 pm CDT.

What are the months with the most sunshine in Carol Stream?

The months with the most sunshine in Carol Stream are July and August, with an average of 9.9h of sunshine.

How long on average sun shines in August in Carol Stream?

In Carol Stream, Illinois, the average sunshine duration in August is 9.9h.

What are the months with the highest UV index in Carol Stream?

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

What is the UV index intensity in August in Carol Stream?

In Carol Stream, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high hazard to health 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
Carol Stream, IL

Average temperature in August - Carol Stream, IL
  • Average high temperature in August: 80.2°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in August: 63.7°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

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Average pressure in August
Carol Stream, IL

Average pressure in August - Carol Stream, IL
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in August
Carol Stream, IL

Average wind speed in August - Carol Stream, IL
  • Average wind speed in August: 6.1mph

The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).

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Average humidity in August
Carol Stream, IL

Average humidity in August - Carol Stream, IL
  • Average humidity in August: 78%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in August
Carol Stream, IL

Average rainfall in August - Carol Stream, IL
  • Average rainfall in August: 0.94"

The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are February, November and December (0.51").

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Average rainfall days in August
Carol Stream, IL

Average rainfall days in August - Carol Stream, IL
  • Average rainfall days in August: 12.1 days

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (4.1 days).

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Average snowfall in August
Carol Stream, IL

Average snowfall in August - Carol Stream, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (1.5").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Carol Stream, IL

Average snowfall days in August - Carol Stream, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (9.3 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
Carol Stream, IL

Average daylight in August / Average sunshine in August - Carol Stream, IL
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in August: 9h and 5min

The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in August
Carol Stream, IL

Average sunshine days in August - Carol Stream, IL
  • Average sunshine days in August: 14.3 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (11.3 days).

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Average UV index in August
Carol Stream, IL

Average UV index in August - Carol Stream, 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 and December (UV index 1).

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Average cloud cover in August
Carol Stream, IL

Average cloud cover in August - Carol Stream, IL
  • Average cloud cover in August: 32

The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 32).

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Average visibility in August
Carol Stream, IL

Average visibility in August - Carol Stream, 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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Carol Stream, Illinois, USA

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