August weather forecast
Champaign, IL

An old building that works as an auditorium within the University of Illinois in Champaign
An old building that works as an auditorium within the University of Illinois in Champaign

Weather in August

The last month of the summer, August, is also a moderately hot month in Champaign, Illinois, with an average temperature varying between 80.6°F (27°C) and 63.3°F (17.4°C).

Temperature

In Champaign, the average high-temperature in August is relatively the same as in July - a still moderately hot 80.6°F (27°C). In August, in Champaign, the average low-temperature is 63.3°F (17.4°C).

Heat index

In August, the average heat index is calculated to be a hot 86°F (30°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'feels like', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like metabolic differences, pregnancy, wind, and activity influence one's weather impression. 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 especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

In August, the average relative humidity is 83%.

Rainfall

In Champaign, it is raining for 13 days, with typically 1.54" (39mm) of accumulated precipitation. In Champaign, during the entire year, the rain falls for 129.9 days and collects up to 18.15" (461mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day in Champaign is 13h and 43min.
On the first day of the month, sunrise is at 5:51 am and sunset at 8:07 pm. On the last day of August, in Champaign, Illinois, sunrise is at 6:19 am and sunset at 7:26 pm CDT.

Sunshine

In Champaign, the average sunshine in August is 9.9h.

UV index

The months with the highest UV index in Champaign are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 6 in August transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in August in Champaign?

In August, in Champaign, Illinois, the average high-temperature is 80.6°F (27°C), and the average low-temperature is 63.3°F (17.4°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is calculated to be 86°F (30°C).

What is the average humidity in August in Champaign?

The average relative humidity in August is 83%.

How many days does it rain in August in Champaign?

In Champaign, in August, during 13 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

When it does not snow in Champaign?

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

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

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

When is the sunrise / sunset in August in Champaign?

On the first day of August, sunrise is at 5:51 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 7:26 pm CDT.

How long on average sun shines in August in Champaign?

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

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

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

What is the UV index intensity in August in Champaign?

In Champaign, Illinois, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Champaign, IL

Average temperature in August - Champaign, IL
  • Average high temperature in August: 80.6°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 (31.8°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

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Average pressure in August
Champaign, IL

Average pressure in August - Champaign, 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 (29.92"Hg).

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Average wind speed in August
Champaign, IL

Average wind speed in August - Champaign, IL
  • Average wind speed in August: 6.3mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in August
Champaign, IL

Average humidity in August - Champaign, 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 (70%).

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Average rainfall in August
Champaign, IL

Average rainfall in August - Champaign, IL
  • Average rainfall in August: 1.54"

The wettest month (with the highest rainfall) is April (2.24").
The driest month (with the least rainfall) is September (0.94").

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Average rainfall days in August
Champaign, IL

Average rainfall days in August - Champaign, IL
  • Average rainfall days in August: 13 days

The month with the highest number of rainy days is May (15.3 days).
The months with the least rainy days are January and February (6 days).

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Average snowfall in August
Champaign, IL

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

The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Champaign, IL

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

The month with the highest number of snowfall days is January (8.7 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
Champaign, IL

Average daylight in August / Average sunshine in August - Champaign, IL
  • Average daylight in August: 13h and 43min

The month with the longest days is June (Average daylight: 14h and 59min).
The month with the shortest days is December (Average daylight: 9h and 22min).

  • Average sunshine in August: 9h and 54min

The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in August
Champaign, IL

Average sunshine days in August - Champaign, IL
  • Average sunshine days in August: 13.9 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.8 days).

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Average UV index in August
Champaign, IL

Average UV index in August - Champaign, 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
Champaign, IL

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

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 31).

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Average visibility in August
Champaign, IL

Average visibility in August - Champaign, 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).

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