August weather forecast
Clinton, IL

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Weather in August

August, the last month of the summer in Clinton, is another warm month, with an average temperature fluctuating between 63.5°F (17.5°C) and 81°F (27.2°C).

Temperature

As August takes hold, the average high-temperature is a still warm 81°F (27.2°C), nearly mirroring that of the previous month. An average nighttime temperature of 63.5°F (17.5°C) is witnessed in Clinton throughout August.

Heat index

The heat index value during August is evaluated at a hot 87.8°F (31°C). Extended exposure and activity might lead to tiredness, potentially resulting in heat cramps.
It is important to note that the heat index values are for shaded areas and light wind scenarios. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.

Humidity

The average relative humidity in August is 83%.

Rainfall

In Clinton, in August, it is raining for 16.7 days, with typically 2.95" (75mm) of accumulated precipitation. Throughout the year, there are 165.4 rainfall days, and 33.78" (858mm) of precipitation is accumulated.

Snowfall

In Clinton, Illinois, snow does not fall in May through September.

Daylight

In Clinton, the average length of the day in August is 13h and 43min.
On the first day of the month, sunrise is at 5:54 am and sunset at 8:09 pm. On the last day of August, sunrise is at 6:23 am and sunset at 7:28 pm CDT.

Sunshine

In Clinton, the average sunshine in August is 9.8h.

UV index

The months with the highest UV index in Clinton, Illinois, are June through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A typical high UV index of 6 in August suggests the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

What is the temperature in August in Clinton?

In August, the average high-temperature and low-temperature are 81°F (27.2°C) and 63.5°F (17.5°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 87.8°F (31°C).

What is the average humidity in August in Clinton?

The average relative humidity in August in Clinton is 83%.

How much does it rain in Clinton in August?

In August, in Clinton, the rain falls for 16.7 days. Throughout August, 2.95" (75mm) of precipitation is accumulated.

When it does not snow in Clinton?

May through September are months without snowfall.

How many hours of daylight does Clinton have in August?

The average day length in August is 13h and 43min.

When are sunrise and sunset in August in Clinton?

On the first day of August, sunrise is at 5:54 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:28 pm CDT.

How long on average sun shines in August in Clinton?

In Clinton, the average sunshine duration in August is 9.8h.

When is the highest UV index in Clinton?

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

What is the UV index intensity in August in Clinton?

In August, the average daily maximum UV index in Clinton, Illinois, 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
Clinton, IL

Average temperature in August - Clinton, IL
  • Average high temperature in August: 81°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in August: 63.5°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).

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Average pressure in August
Clinton, IL

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in August
Clinton, IL

Average wind speed in August - Clinton, IL
  • Average wind speed in August: 6.4mph

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

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Average humidity in August
Clinton, IL

Average humidity in August - Clinton, IL
  • Average humidity in August: 83%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in August
Clinton, IL

Average rainfall in August - Clinton, IL
  • Average rainfall in August: 2.95"

The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is December (1.89").

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Average rainfall days in August
Clinton, IL

Average rainfall days in August - Clinton, IL
  • Average rainfall days in August: 16.7 days

The months with the highest number of rainy days are May and July (20.2 days).
The month with the least rainy days is February (6.8 days).

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Average snowfall in August
Clinton, IL

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

The month with the highest snowfall is January (4.49").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Clinton, IL

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

The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Clinton, 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 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

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Average sunshine days in August
Clinton, IL

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

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (7.3 days).

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Average UV index in August
Clinton, IL

Average UV index in August - Clinton, 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
Clinton, IL

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

The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 31).

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Average visibility in August
Clinton, IL

Average visibility in August - Clinton, 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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Clinton, Illinois, USA

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