August weather forecast
Onarga, IL

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Weather in August

August, the last month of the summer in Onarga, is also a moderately hot month, with temperature in the range of an average high of 79.9°F (26.6°C) and an average low of 62.6°F (17°C).

Temperature

The dawn of August sees an average high-temperature of a still warm 79.9°F (26.6°C), subtly contrasting with July's 81°F (27.2°C). The month of August records an average low-temperature of 62.6°F (17°C) in Onarga.

Humidity

In August, the average relative humidity is 84%.

Rainfall

In Onarga, during August, the rain falls for 13 days and regularly aggregates up to 1.5" (38mm) of precipitation. In Onarga, during the entire year, the rain falls for 130.7 days and collects up to 17.13" (435mm) of precipitation.

Snowfall

May through October are months without snowfall in Onarga.

Daylight

The average length of the day in August is 13h and 44min.
On the first day of August in Onarga, sunrise is at 5:49 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 7:25 pm CDT.

Sunshine

In Onarga, the average sunshine in August is 9.7h.

UV index

In August, the average daily maximum UV index in Onarga is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index, 5 during August, leads to the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature in Onarga?

The average high-temperature, in August, in Onarga, is 79.9°F (26.6°C), while the average low-temperature is 62.6°F (17°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, in July is computed to be 87.8°F (31°C).

What is the average humidity in August in Onarga?

In August, the average relative humidity is 84%.

How many days does it rain in August in Onarga?

In Onarga, in August, it is raining for 13 days, with typically 1.5" (38mm) of accumulated precipitation.

When it does not snow in Onarga?

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

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

In Onarga, Illinois, the average day length in August is 13h and 44min.

When is the sunrise / sunset in August in Onarga?

In August, on the first day of the month, sunrise is at 5:49 am and sunset at 8:07 pm. On the last day of the month, in Onarga, sunrise is at 6:18 am and sunset at 7:25 pm CDT.

How many hours of sunshine does Onarga have in August?

In August, the average sunshine duration in Onarga is 9.7h.

What is the UV index reading in August in Onarga?

In Onarga, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health threat 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
Onarga, IL

Average temperature in August - Onarga, IL
  • Average high temperature in August: 79.9°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.7°F).

  • Average low temperature in August: 62.6°F

The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

Average pressure in August
Onarga, IL

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

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Onarga, IL

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

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

Average humidity in August
Onarga, IL

Average humidity in August - Onarga, 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 (71%).

Average rainfall in August
Onarga, IL

Average rainfall in August - Onarga, IL
  • Average rainfall in August: 1.5"

The wettest month (with the highest rainfall) is May (2.44").
The driest months (with the least rainfall) are January, February and December (0.91").

Average rainfall days in August
Onarga, IL

Average rainfall days in August - Onarga, IL
  • Average rainfall days in August: 13 days

The month with the highest number of rainy days is May (17.3 days).
The months with the least rainy days are January and February (5.5 days).

Average snowfall in August
Onarga, IL

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

The month with the highest snowfall is February (2.24").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Onarga, IL

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

The month with the highest number of snowfall days is January (9.6 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
Onarga, IL

Average daylight in August / Average sunshine in August - Onarga, 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 18min).

  • Average sunshine in August: 9h and 4min

The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

Average sunshine days in August
Onarga, IL

Average sunshine days in August - Onarga, IL
  • Average sunshine days in August: 14.3 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (11.4 days).

Average UV index in August
Onarga, IL

Average UV index in August - Onarga, IL
  • Average UV index in August: 5

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

Average cloud cover in August
Onarga, IL

Average cloud cover in August - Onarga, IL
  • Average cloud cover in August: 33

The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 33).

Average visibility in August
Onarga, IL

Average visibility in August - Onarga, 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).

Onarga, Illinois, USA

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