August weather forecast
Elmhurst, IL

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Weather in August

The weather in August in Elmhurst, Illinois cools down slightly; however, averages around a warm 80.2°F (26.8°C) high, making it the second hottest month of the year. Though temperatures are high, a decrease in average cardio activity can be noticed due to the back-to-school season. The evenings become pleasantly warm, making outdoor activities still enjoyable. The abundance of sunlight continues to douse the town in a lovely summer hue.

Temperature

On the advent of August, Elmhurst's average high-temperature exhibits a minor adjustment to a still moderately hot 80.2°F (26.8°C) from July's 81.9°F (27.7°C). Nighttime temperature in Elmhurst dips to a mean of 65.7°F (18.7°C) during August.

Humidity

In Elmhurst, the average relative humidity in August is 74%.

Rainfall

In Elmhurst, Illinois, in August, during 16.6 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. Throughout the year, in Elmhurst, there are 149.4 rainfall days, and 25.08" (637mm) of precipitation is accumulated.

Snowfall

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

Daylight

In August, the average length of the day in Elmhurst is 13h and 49min.
On the first day of August, sunrise is at 5:46 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:26 pm CDT.

Sunshine

July and August, with an average of 10.1h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index in Elmhurst are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index, 6 during August, leads to the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. 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 are the temperatures in Elmhurst in August?

In Elmhurst, in August, the average high-temperature is 80.2°F (26.8°C), and the average low-temperature is 65.7°F (18.7°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, in July is appraised at 87.8°F (31°C).

What is the average humidity in August in Elmhurst?

In August, the average relative humidity in Elmhurst, Illinois, is 74%.

How many days does it rain in August in Elmhurst?

In Elmhurst, Illinois, in August, during 16.6 rainfall days, 2.83" (72mm) of precipitation is typically accumulated.

When it does not snow in Elmhurst?

June through September are months without snowfall in Elmhurst.

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

The average day length in August is 13h and 49min.

What time are sunrise and sunset in August in Elmhurst?

On the first day of August in Elmhurst, Illinois, sunrise is at 5:46 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:26 pm CDT.

What is the month with the most sunshine in Elmhurst?

July and August, with an average of 10.1h of sunshine, are months with the most sunshine in Elmhurst, Illinois.

How long on average sun shines in August in Elmhurst?

The average sunshine duration in August in Elmhurst, Illinois, is 10.1h.

When is the highest UV index in Elmhurst?

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 Elmhurst?

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

Average temperature in August - Elmhurst, IL
  • Average high temperature in August: 80.2°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in August: 65.7°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).

Average pressure in August
Elmhurst, IL

Average pressure in August - Elmhurst, 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
Elmhurst, IL

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

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in August
Elmhurst, IL

Average humidity in August - Elmhurst, IL
  • Average humidity in August: 74%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).

Average rainfall in August
Elmhurst, IL

Average rainfall in August - Elmhurst, IL
  • Average rainfall in August: 2.83"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is December (1.14").

Average rainfall days in August
Elmhurst, IL

Average rainfall days in August - Elmhurst, IL
  • Average rainfall days in August: 16.6 days

The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is February (5.1 days).

Average snowfall in August
Elmhurst, IL

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

The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Elmhurst, IL

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

The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Elmhurst, 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 1min

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in August
Elmhurst, IL

Average sunshine days in August - Elmhurst, IL
  • Average sunshine days in August: 11.3 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is July (9.5 days).

Average UV index in August
Elmhurst, IL

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

Average cloud cover in August
Elmhurst, IL

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

The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in August
Elmhurst, IL

Average visibility in August - Elmhurst, 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).

Elmhurst, Illinois, USA

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