August weather forecast
Wheeling, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Wheeling, Illinois, with an average temperature fluctuating between 79.7°F (26.5°C) and 64.9°F (18.3°C).

Temperature

The advent of August observes an average high-temperature of a still moderately hot 79.7°F (26.5°C), nearly identical to July's 81°F (27.2°C). Wheeling, in August, experiences an average temperature of 64.9°F (18.3°C) at night.

Humidity

In August, the average relative humidity is 76%.

Rainfall

In Wheeling, during August, the rain falls for 16.1 days and regularly aggregates up to 2.8" (71mm) of precipitation. Throughout the year, there are 154.2 rainfall days, and 28.94" (735mm) of precipitation is accumulated.

Snowfall

In Wheeling, snow does not fall in June through September.

Daylight

In August, the average length of the day is 13h and 50min.
On the first day of August, sunrise is at 5:45 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:26 pm CDT.

Sunshine

August has the most sunshine of the year, with an average of 10.3h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In August, the average maximum UV index of 6 translates into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August?

The high-temperature, in August, in Wheeling, records 79.7°F (26.5°C), while the low-temperature is 64.9°F (18.3°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in July is appraised at 86°F (30°C).

What is the average humidity in August?

The average relative humidity in August is 76%.

How many days does it rain in August?

In Wheeling, during August, the rain falls for 16.1 days and regularly aggregates up to 2.8" (71mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

How many hours of daylight does Wheeling have in August?

In August, the average day length is 13h and 50min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 5:45 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:26 pm CDT.

What month has the most sunshine?

August has the most sunshine of the year, with an average of 10.3h of sunshine.

How long on average sun shines in August?

In August, the average sunshine duration is 10.3h.

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

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

What is the UV index reading in August?

In Wheeling, 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 unsafe 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
Wheeling, IL

Average temperature in August - Wheeling, IL
  • Average high temperature in August: 79.7°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in August: 64.9°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).

Average pressure in August
Wheeling, IL

Average pressure in August - Wheeling, 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).

Average wind speed in August
Wheeling, IL

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

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in August
Wheeling, IL

Average humidity in August - Wheeling, IL
  • Average humidity in August: 76%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is October (73%).

Average rainfall in August
Wheeling, IL

Average rainfall in August - Wheeling, IL
  • Average rainfall in August: 2.8"

The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is December (1.34").

Average rainfall days in August
Wheeling, IL

Average rainfall days in August - Wheeling, IL
  • Average rainfall days in August: 16.1 days

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is February (5.9 days).

Average snowfall in August
Wheeling, IL

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

The month with the highest snowfall is January (4.8").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Wheeling, IL

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

The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Wheeling, 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: 10h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in August
Wheeling, IL

Average sunshine days in August - Wheeling, IL
  • Average sunshine days in August: 12.8 days

The month with the most sunshine days is November (15.7 days).
The month with the least sunshine days is April (10.3 days).

Average UV index in August
Wheeling, IL

Average UV index in August - Wheeling, IL
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in August
Wheeling, IL

Average cloud cover in August - Wheeling, IL
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in August
Wheeling, IL

Average visibility in August - Wheeling, 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).

Wheeling, Illinois, USA

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