August weather forecast
Congerville, IL

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Weather in August

The last month of the summer, August, is another warm month in Congerville, Illinois, with an average temperature fluctuating between 63.1°F (17.3°C) and 80.2°F (26.8°C).

Temperature

August's weather records an average high-temperature of a still moderately hot 80.2°F (26.8°C), showing little deviation from July. In Congerville, an average temperature of 63.1°F (17.3°C) is noted during August nights.

Humidity

The average relative humidity in August is 83%.

Rainfall

In Congerville, in August, during 15 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. Throughout the year, in Congerville, there are 147.1 rainfall days, and 24.17" (614mm) of precipitation is accumulated.

Snowfall

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

Daylight

In August, the average length of the day in Congerville, Illinois, is 13h and 44min.
On the first day of the month, sunrise is at 5:54 am and sunset at 8:11 pm. On the last day of August, sunrise is at 6:23 am and sunset at 7:30 pm CDT.

Sunshine

In August, the average sunshine is 9.9h.

UV index

In August, the average daily maximum UV index in Congerville, Illinois, is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 5 in August interprets into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Congerville in August?

The average high-temperature, in August, in Congerville, is 80.2°F (26.8°C), while the average low-temperature is 63.1°F (17.3°C). In July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), 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 Congerville?

In August, the average relative humidity in Congerville, Illinois, is 83%.

How many days does it rain in August in Congerville?

In Congerville, in August, during 15 rainfall days, 2.17" (55mm) of precipitation is typically accumulated.

When it does not snow in Congerville?

May through September are months without snowfall in Congerville, Illinois.

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

The average day length in August in Congerville is 13h and 44min.

When is the sunrise / sunset in August in Congerville?

On the first day of August in Congerville, sunrise is at 5:54 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:30 pm CDT.

How many hours of sunshine does Congerville have in August?

The average sunshine duration in August in Congerville, Illinois, is 9.9h.

What is the UV index reading in August in Congerville?

In Congerville, Illinois, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability 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
Congerville, IL

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

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.4°F).

  • Average low temperature in August: 63.1°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 (18.5°F).

Average pressure in August
Congerville, IL

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in August
Congerville, IL

Average wind speed in August - Congerville, IL
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in August
Congerville, IL

Average humidity in August - Congerville, IL
  • Average humidity in August: 83%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).

Average rainfall in August
Congerville, IL

Average rainfall in August - Congerville, IL
  • Average rainfall in August: 2.17"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is December (1.22").

Average rainfall days in August
Congerville, IL

Average rainfall days in August - Congerville, IL
  • Average rainfall days in August: 15 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (5.8 days).

Average snowfall in August
Congerville, IL

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

The months with the highest snowfall are January and February (2.8").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Congerville, IL

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

The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Congerville, 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: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in August
Congerville, IL

Average sunshine days in August - Congerville, IL
  • Average sunshine days in August: 11.7 days

The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (9 days).

Average UV index in August
Congerville, IL

Average UV index in August - Congerville, IL
  • Average UV index in August: 5

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Congerville, IL

Average cloud cover in August - Congerville, IL
  • Average cloud cover in August: 31

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 30).

Average visibility in August
Congerville, IL

Average visibility in August - Congerville, IL
  • Average visibility in August: 5mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

Congerville, Illinois, USA

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