August weather forecast
Chapin, IL

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Weather in August

The last month of the summer, August, is also a moderately hot month in Chapin, Illinois, with temperature in the range of an average low of 64.8°F (18.2°C) and an average high of 82.6°F (28.1°C).

Temperature

Chapin starts August with an average high-temperature of a still moderately hot 82.6°F (28.1°C), hinting at a minimal fluctuation from July. During August, the nighttime temperature in Chapin averages of 64.8°F (18.2°C).

Heat index

August's mean heat index is calculated to be a hot 89.6°F (32°C). Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.
Consider that heat index readings are for situations in the shade and light wind. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.

Humidity

In August, the average relative humidity is 80%.

Rainfall

In Chapin, Illinois, in August, during 13.5 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, in Chapin, there are 148.2 rainfall days, and 29.37" (746mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Chapin, the average length of the day in August is 13h and 41min.
On the first day of August, sunrise is at 6:01 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:33 pm CDT.

Sunshine

The average sunshine in August is 10h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: In August, the maximum UV index of 6 transforms into these recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

How hot is August in Chapin?

In August, the average high-temperature and low-temperature in Chapin, Illinois, are 82.6°F (28.1°C) and 64.8°F (18.2°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 89.6°F (32°C).

What is the average humidity in August in Chapin?

The average relative humidity in August in Chapin is 80%.

How much does it rain in Chapin in August?

In Chapin, during August, the rain falls for 13.5 days and regularly aggregates up to 2.4" (61mm) of precipitation.

When it does not snow in Chapin?

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

How many hours of daylight does Chapin have in August?

In August, the average day length in Chapin, Illinois, is 13h and 41min.

When is the sunrise / sunset in August in Chapin?

In August, on the first day of the month, sunrise is at 6:01 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:33 pm CDT.

How long on average sun shines in August in Chapin?

In Chapin, the average sunshine duration in August is 10h.

What are the months with the highest UV index in Chapin?

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

How high is the UV index in August in Chapin?

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

Average temperature in August - Chapin, IL
  • Average high temperature in August: 82.6°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in August: 64.8°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21°F).

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Average pressure in August
Chapin, IL

Average pressure in August - Chapin, IL
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in August
Chapin, IL

Average wind speed in August - Chapin, IL
  • Average wind speed in August: 6.2mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).

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Average humidity in August
Chapin, IL

Average humidity in August - Chapin, IL
  • Average humidity in August: 80%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Chapin, IL

Average rainfall in August - Chapin, IL
  • Average rainfall in August: 2.4"

The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.54").

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Average rainfall days in August
Chapin, IL

Average rainfall days in August - Chapin, IL
  • Average rainfall days in August: 13.5 days

The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and February (7.1 days).

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Average snowfall in August
Chapin, IL

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

The month with the highest snowfall is January (3.58").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Chapin, IL

Average snowfall days in August - Chapin, 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).

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

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 10h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days in August
Chapin, IL

Average sunshine days in August - Chapin, IL
  • Average sunshine days in August: 15 days

The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is June (10.5 days).

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Average UV index in August
Chapin, IL

Average UV index in August - Chapin, 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
Chapin, IL

Average cloud cover in August - Chapin, IL
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).

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Average visibility in August
Chapin, IL

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

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