August weather forecast
Crest Hill, IL

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Weather in August

August, the last month of the summer in Crest Hill, is also a moderately hot month, with an average temperature varying between 62.8°F (17.1°C) and 80.1°F (26.7°C).

Temperature

August brings an average high-temperature of a still warm 80.1°F (26.7°C), showing a slight difference from July's 81.3°F (27.4°C). The low-temperature average for Crest Hill during August stands at a refreshing 62.8°F (17.1°C).

Humidity

In August, the average relative humidity is 82%.

Rainfall

In Crest Hill, in August, during 15.8 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. Throughout the year, in Crest Hill, there are 153.6 rainfall days, and 32.72" (831mm) of precipitation is accumulated.

Snowfall

In Crest Hill, snow does not fall in May through October.

Daylight

In August, the average length of the day in Crest Hill is 13h and 47min.
On the first day of August in Crest Hill, Illinois, sunrise is at 5:47 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 7:26 pm CDT.

Sunshine

The month with the most sunshine in Crest Hill is August, with an average of 9.7h of sunshine.

UV index

In Crest Hill, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 5 during August translates into the following directions:
Take necessary precautions - Defending against sun damage is advocated. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
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Frequently asked questions

What are the temperatures in Crest Hill in August?

An average high-temperature, in August, in Crest Hill, is 80.1°F (26.7°C) and the average low-temperature is 62.8°F (17.1°C). In July, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is appraised at 87.8°F (31°C).

What is the average humidity in August in Crest Hill?

In Crest Hill, Illinois, the average relative humidity in August is 82%.

How many days does it rain in August in Crest Hill?

In August, in Crest Hill, the rain falls for 15.8 days. Throughout August, 2.83" (72mm) of precipitation is accumulated.

When it does not snow in Crest Hill?

May through October are months without snowfall in Crest Hill, Illinois.

What is the average length of the day in August in Crest Hill?

In Crest Hill, the average day length in August is 13h and 47min.

When is the sunrise / sunset in August in Crest Hill?

In August, on the first day of the month, sunrise is at 5:47 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 7:26 pm CDT.

What month has the most sunshine in Crest Hill?

The month with the most sunshine in Crest Hill, Illinois, is August, with an average of 9.7h of sunshine.

How many hours of sunshine does Crest Hill have in August?

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

What is the UV index reading in August in Crest Hill?

In Crest Hill, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability 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
Crest Hill, IL

Average temperature in August - Crest Hill, IL
  • Average high temperature in August: 80.1°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 (29.3°F).

  • Average low temperature in August: 62.8°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).

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Average pressure in August
Crest Hill, IL

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

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in August
Crest Hill, IL

Average wind speed in August - Crest Hill, IL
  • Average wind speed in August: 5.9mph

The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).

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Average humidity in August
Crest Hill, IL

Average humidity in August - Crest Hill, IL
  • Average humidity in August: 82%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in August
Crest Hill, IL

Average rainfall in August - Crest Hill, IL
  • Average rainfall in August: 2.83"

The wettest month (with the highest rainfall) is May (4.41").
The driest month (with the least rainfall) is February (1.61").

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Average rainfall days in August
Crest Hill, IL

Average rainfall days in August - Crest Hill, IL
  • Average rainfall days in August: 15.8 days

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is February (5.7 days).

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Average snowfall in August
Crest Hill, IL

Average snowfall in August - Crest Hill, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (4.33").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Crest Hill, IL

Average snowfall days in August - Crest Hill, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (11.9 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
Crest Hill, IL

Average daylight in August / Average sunshine in August - Crest Hill, IL
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in August: 9h and 4min

The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in August
Crest Hill, IL

Average sunshine days in August - Crest Hill, IL
  • Average sunshine days in August: 11.8 days

The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is June (10.4 days).

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Average UV index in August
Crest Hill, IL

Average UV index in August - Crest Hill, IL
  • Average UV index in August: 5

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

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Average cloud cover in August
Crest Hill, IL

Average cloud cover in August - Crest Hill, IL
  • Average cloud cover in August: 34

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).

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Average visibility in August
Crest Hill, IL

Average visibility in August - Crest Hill, IL
  • Average visibility in August: 5mi

The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).

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Crest Hill, Illinois, USA

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