August weather forecast
Oraville, IL

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Weather in August

August, the last month of the summer in Oraville, is another warm month, with an average temperature fluctuating between 85.8°F (29.9°C) and 66.4°F (19.1°C).

Temperature

In the transition from July to August, Oraville reports an average high-temperature of a warm 85.8°F (29.9°C), indicating a close resemblance to the prior month. Oraville's average low-temperature for the month of August records at an enjoyable 66.4°F (19.1°C).

Heat index

Throughout August, the heat index is calculated to be a very hot 96.8°F (36°C). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Note that heat index values are valued for light wind and location in the shade. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In August, the average relative humidity is 76%.

Rainfall

In Oraville, in August, it is raining for 13.9 days, with typically 2.8" (71mm) of accumulated precipitation. In Oraville, during the entire year, the rain falls for 158.6 days and collects up to 34.69" (881mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in August is 13h and 35min.
On the first day of the month, sunrise is at 6:01 am and sunset at 8:06 pm. On the last day of August, sunrise is at 6:27 am and sunset at 7:27 pm CDT.

Sunshine

The average sunshine in August is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high UV index of 6 in August translates into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in August?

The average high-temperature, in August, in Oraville, is 85.8°F (29.9°C), while the average low-temperature is 66.4°F (19.1°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 96.8°F (36°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 Oraville, in August, it is raining for 13.9 days, with typically 2.8" (71mm) of accumulated precipitation.

When it does not snow?

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

What is the average length of the day in August?

In August, the average day length is 13h and 35min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 6:01 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:27 am and sunset at 7:27 pm CDT.

How many hours of sunshine does Oraville have in August?

In Oraville, the average sunshine duration in August is 10.3h.

When is the highest UV index?

The months with the highest UV index in Oraville are May through August, with an average maximum UV index of 6.

How high is the UV index in August?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability 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
Oraville, IL

Average temperature in August - Oraville, IL
  • Average high temperature in August: 85.8°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.6°F).

  • Average low temperature in August: 66.4°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

Average pressure in August
Oraville, IL

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
Oraville, IL

Average wind speed in August - Oraville, IL
  • Average wind speed in August: 5.6mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in August
Oraville, IL

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

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Oraville, IL

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

The wettest month (with the highest rainfall) is April (4.49").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in August
Oraville, IL

Average rainfall days in August - Oraville, IL
  • Average rainfall days in August: 13.9 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.4 days).

Average snowfall in August
Oraville, IL

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

The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Oraville, IL

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

The months with the highest number of snowfall days are January and February (4.8 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
Oraville, IL

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

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in August
Oraville, IL

Average sunshine days in August - Oraville, IL
  • Average sunshine days in August: 14.2 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (11.3 days).

Average UV index in August
Oraville, IL

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

The months with the highest UV index are May, 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
Oraville, IL

Average cloud cover in August - Oraville, IL
  • Average cloud cover in August: 27

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 27).

Average visibility in August
Oraville, IL

Average visibility in August - Oraville, 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).

Oraville, Illinois, USA

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