August weather forecast
Champaign, IL

englishespañol中文
Share
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

August in Champaign carries forward the summer legacy with high temperatures and increased humidity. Despite a marginal dip in temperature from July, August maintains the weather in the high-summer range. This month, however, experiences less rainfall and more sunshine than its predecessor. The average daylight duration, nevertheless, takes a slight downturn but remains generously long. The decline in wind speed continues into this month as well, contributing to the overall calm and balmy ambiance.

Temperature

Champaign observes an average high-temperature of a still moderately hot 80.6°F (27°C) in August, barely different from 81.1°F (27.3°C) in July. Throughout the month of August, Champaign observes an average nighttime temperature of 63.3°F (17.4°C).

Heat index

During August, the heat index is evaluated at a hot 86°F (30°C). If one stays active during extended exposure, it might induce fatigue and result in heat cramps.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.

Humidity

In August, the average relative humidity is 83%.

Rainfall

In Champaign, during August, the rain falls for 13 days and regularly aggregates up to 1.54" (39mm) of precipitation. Throughout the year, there are 129.9 rainfall days, and 18.15" (461mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Champaign, Illinois, the average length of the day in August is 13h and 43min.
On the first day of August, sunrise is at 5:51 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:25 pm CDT.

Sunshine

In August, the average sunshine is 9.9h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete 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.

Frequently asked questions

What is the usual temperature for Champaign in August?

An average high-temperature, in August, in Champaign, 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 takes the relative humidity and factors it into the air temperature reading, is evaluated at 86°F (30°C).

What is the average humidity in August?

In August, the average relative humidity is 83%.

How much does it rain in Champaign in August?

In Champaign, during August, the rain falls for 13 days and regularly aggregates up to 1.54" (39mm) of precipitation.

When it does not snow?

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

What is the average length of the day in August?

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

When are sunrise and sunset in August?

On the first day of August, sunrise is at 5:51 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 7:25 pm CDT.

How long on average sun shines in August in Champaign?

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

When is the highest UV index?

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

What is the UV index intensity in August?

The average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high hazard to health 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
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).

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).

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).

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%).

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").

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).

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").

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).

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 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 24min).

  • Average sunshine in August: 9h and 5min

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).

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).

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).

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).

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).

Champaign, Illinois, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location