August weather forecast
Oreana, IL

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Weather in August

The last month of the summer, August, is another warm month in Oreana, Illinois, with temperature in the range of an average low of 63.9°F (17.7°C) and an average high of 81.1°F (27.3°C).

Temperature

Oreana's August showcases an average high-temperature of a still moderately hot 81.1°F (27.3°C), hardly distinct from July's 82°F (27.8°C). An average low-temperature of 63.9°F (17.7°C) is expected in Oreana during August.

Heat index

In August, the average heat index is computed to be a tropical 87.8°F (31°C). Prolonged exposure and physical activity might induce exhaustion, potentially causing heat cramps.
Data suggests that the heat index is set for environments in shade and with a light wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.

Humidity

In Oreana, the average relative humidity in August is 82%.

Rainfall

In August, the rain falls for 11.8 days. Throughout August, 1.5" (38mm) of precipitation is accumulated. In Oreana, during the entire year, the rain falls for 130.2 days and collects up to 16.34" (415mm) of precipitation.

Snowfall

May through October are months without snowfall in Oreana.

Daylight

The average length of the day in August in Oreana, Illinois, is 13h and 42min.
On the first day of August, sunrise is at 5:54 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:27 pm CDT.

Sunshine

In Oreana, the average sunshine in August 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 reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In August, the maximum UV index of 6 suggests these recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

What is the usual temperature for Oreana in August?

In Oreana, 81.1°F (27.3°C) is the average high-temperature and 63.9°F (17.7°C) is the average low-temperature during August. In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is computed to be 87.8°F (31°C).

What is the average humidity in August in Oreana?

The average relative humidity in August in Oreana, Illinois, is 82%.

How much does it rain in Oreana in August?

In Oreana, in August, it is raining for 11.8 days, with typically 1.5" (38mm) of accumulated precipitation.

When it does not snow in Oreana?

In Oreana, snow does not fall in May through October.

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

In August, the average day length in Oreana is 13h and 42min.

When is the sunrise / sunset in August in Oreana?

In August, on the first day of the month, sunrise is at 5:54 am and sunset at 8:08 pm. On the last day of the month, in Oreana, Illinois, sunrise is at 6:23 am and sunset at 7:27 pm CDT.

How long on average sun shines in August in Oreana?

In Oreana, Illinois, the average sunshine duration in August is 9.9h.

What is the month with the highest UV index in Oreana?

The months with the highest UV index in Oreana, Illinois, are June through August, with an average maximum UV index of 6.

What is the UV index reading in August in Oreana?

The average daily maximum UV index in August in Oreana is 6. A UV Index value of 6 to 7 symbolizes a high health risk 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
Oreana, IL

Average temperature in August - Oreana, IL
  • Average high temperature in August: 81.1°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.9°F).

  • Average low temperature in August: 63.9°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

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Average pressure in August
Oreana, IL

Average pressure in August - Oreana, 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).

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Average wind speed in August
Oreana, IL

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

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

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Average humidity in August
Oreana, IL

Average humidity in August - Oreana, IL
  • Average humidity in August: 82%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in August
Oreana, IL

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

The wettest month (with the highest rainfall) is May (2.01").
The driest months (with the least rainfall) are February and December (0.87").

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Average rainfall days in August
Oreana, IL

Average rainfall days in August - Oreana, IL
  • Average rainfall days in August: 11.8 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is February (5.8 days).

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Average snowfall in August
Oreana, IL

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

The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Oreana, IL

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

The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Oreana, 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 24min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in August
Oreana, IL

Average sunshine days in August - Oreana, IL
  • Average sunshine days in August: 16.6 days

The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is May (11.5 days).

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Average UV index in August
Oreana, IL

Average UV index in August - Oreana, 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).

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Average cloud cover in August
Oreana, IL

Average cloud cover in August - Oreana, IL
  • Average cloud cover in August: 31

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 29).

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Average visibility in August
Oreana, IL

Average visibility in August - Oreana, 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).

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Oreana, Illinois, USA

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