August weather forecast
Arlington, IL

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Weather in August

August, the last month of the summer in Arlington, is another warm month, with temperature in the range of an average low of 62.1°F (16.7°C) and an average high of 79.2°F (26.2°C).

Temperature

With the onset of August, the average high-temperature stands at a still moderately hot 79.2°F (26.2°C), closely aligned with July's 80.6°F (27°C). Arlington records an average nighttime low-temperature of 62.1°F (16.7°C) throughout August.

Humidity

In Arlington, the average relative humidity in August is 84%.

Rainfall

In Arlington, Illinois, in August, during 12.2 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. In Arlington, Illinois, during the entire year, the rain falls for 107.9 days and collects up to 9.96" (253mm) of precipitation.

Snowfall

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

Daylight

In Arlington, the average length of the day in August is 13h and 47min.
On the first day of August, sunrise is at 5:52 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:31 pm CDT.

Sunshine

June through August, with an average of 9.5h of sunshine, are months with the most sunshine in Arlington.

UV index

In Arlington, Illinois, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In August, the UV index of 5 transforms into the following advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August in Arlington?

In Arlington, in August, the average high-temperature is 79.2°F (26.2°C), and the average low-temperature is 62.1°F (16.7°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in July is estimated at 86°F (30°C).

What is the average humidity in August in Arlington?

In Arlington, the average relative humidity in August is 84%.

How many days does it rain in August in Arlington?

In Arlington, in August, during 12.2 rainfall days, 0.87" (22mm) of precipitation is typically accumulated.

When it does not snow in Arlington?

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

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

The average day length in August in Arlington is 13h and 47min.

When are sunrise and sunset in August in Arlington?

On the first day of August in Arlington, sunrise is at 5:52 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:31 pm CDT.

What are the months with the most sunshine in Arlington?

June through August, with an average of 9.5h of sunshine, are months with the most sunshine in Arlington.

How many hours of sunshine does Arlington have in August?

In August, the average sunshine duration in Arlington is 9.5h.

What is the UV index reading in August in Arlington?

The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's 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
Arlington, IL

Average temperature in August - Arlington, IL
  • Average high temperature in August: 79.2°F

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.6°F).

  • Average low temperature in August: 62.1°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).

Average pressure in August
Arlington, IL

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

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in August
Arlington, IL

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

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in August
Arlington, IL

Average humidity in August - Arlington, IL
  • Average humidity in August: 84%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (73%).

Average rainfall in August
Arlington, IL

Average rainfall in August - Arlington, IL
  • Average rainfall in August: 0.87"

The wettest month (with the highest rainfall) is May (1.42").
The driest months (with the least rainfall) are January, February, November and December (0.51").

Average rainfall days in August
Arlington, IL

Average rainfall days in August - Arlington, IL
  • Average rainfall days in August: 12.2 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (3.6 days).

Average snowfall in August
Arlington, IL

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

The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Arlington, IL

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

The month with the highest number of snowfall days is January (8.6 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
Arlington, IL

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in August: 9h and 3min

The months with the most sunshine are June, July and August (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in August
Arlington, IL

Average sunshine days in August - Arlington, IL
  • Average sunshine days in August: 15.3 days

The month with the most sunshine days is December (21.8 days).
The month with the least sunshine days is July (13.3 days).

Average UV index in August
Arlington, IL

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

Average cloud cover in August
Arlington, IL

Average cloud cover in August - Arlington, IL
  • Average cloud cover in August: 35

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 33).

Average visibility in August
Arlington, IL

Average visibility in August - Arlington, 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).

Arlington, Illinois, USA

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