August weather forecast
Irving, IL

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Weather in August

August, the last month of the summer in Irving, is another warm month, with an average temperature ranging between min 64.9°F (18.3°C) and max 82°F (27.8°C).

Temperature

The arrival of August brings an average high-temperature of a still moderately hot 82°F (27.8°C), nearly identical to July's 83.5°F (28.6°C). An average low-temperature of 64.9°F (18.3°C) is recorded during the nights in August.

Heat index

During August, the heat index is estimated at a tropical 89.6°F (32°C). Exhaustion becomes probable with enduring exposure and activity, potentially causing heat cramps.
Heat index details are generally centered around shaded locations and a mild breeze. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. 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 hold particular significance for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

In August, the average relative humidity in Irving is 81%.

Rainfall

In August, the rain falls for 14.2 days. Throughout August, 2.68" (68mm) of precipitation is accumulated. Throughout the year, there are 145.5 rainfall days, and 27.44" (697mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in August is 13h and 40min.
On the first day of August, sunrise is at 5:58 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:29 pm CDT.

Sunshine

The average sunshine in August in Irving is 9.9h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In August, a regular UV index of 6 translates into these guidelines:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are August temperatures in Irving?

During August, Irving experiences an average high-temperature of 82°F (27.8°C) and a low-temperature of 64.9°F (18.3°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is estimated at 89.6°F (32°C).

What is the average humidity in August in Irving?

In Irving, the average relative humidity in August is 81%.

How much does it rain in Irving in August?

In Irving, during August, the rain falls for 14.2 days and regularly aggregates up to 2.68" (68mm) of precipitation.

When it does not snow in Irving?

May through October are months without snowfall in Irving.

How many hours of daylight does Irving have in August?

In Irving, Illinois, the average day length in August is 13h and 40min.

What time are sunrise and sunset in August in Irving?

On the first day of August, sunrise is at 5:58 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:29 pm CDT.

How many hours of sunshine does Irving have in August?

In August, the average sunshine duration is 9.9h.

When is the highest UV index in Irving?

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 Irving?

In Irving, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health 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
Irving, IL

Average temperature in August - Irving, IL
  • Average high temperature in August: 82°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (34.7°F).

  • Average low temperature in August: 64.9°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure in August
Irving, IL

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Irving, IL

Average wind speed in August - Irving, IL
  • Average wind speed in August: 6mph

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

Average humidity in August
Irving, IL

Average humidity in August - Irving, IL
  • Average humidity in August: 81%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Irving, IL

Average rainfall in August - Irving, IL
  • Average rainfall in August: 2.68"

The wettest month (with the highest rainfall) is June (3.5").
The driest month (with the least rainfall) is February (1.5").

Average rainfall days in August
Irving, IL

Average rainfall days in August - Irving, IL
  • Average rainfall days in August: 14.2 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (7.4 days).

Average snowfall in August
Irving, IL

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

The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Irving, IL

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

The month with the highest number of snowfall days is January (7.4 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
Irving, IL

Average daylight in August / Average sunshine in August - Irving, IL
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

Average sunshine days in August
Irving, IL

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

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (11.1 days).

Average UV index in August
Irving, IL

Average UV index in August - Irving, 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
Irving, IL

Average cloud cover in August - Irving, IL
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June, July and September (Cloud cover 29).

Average visibility in August
Irving, IL

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

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

Irving, Illinois, USA

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