August weather forecast
Grape Creek, IL

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Weather in August

August, the last month of the summer in Grape Creek, is also a moderately hot month, with temperature in the range of an average low of 63.3°F (17.4°C) and an average high of 80.6°F (27°C).

Temperature

August's arrival brings an average high-temperature of a still warm 80.6°F (27°C), demonstrating subtle variation from the preceding month. Grape Creek temperatures generally rest at a low of 63.3°F (17.4°C) during the August nights.

Heat index

The heat index value during August is appraised at a hot 86°F (30°C). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an amalgamation of air temperature and humidity to express the equivalent perceived temperature. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.

Humidity

In Grape Creek, the average relative humidity in August is 83%.

Rainfall

In August, the rain falls for 14.6 days. Throughout August, 2.24" (57mm) of precipitation is accumulated. Throughout the year, in Grape Creek, there are 151.8 rainfall days, and 25.63" (651mm) of precipitation is accumulated.

Snowfall

In Grape Creek, Illinois, snow does not fall in May through October.

Daylight

In August, the average length of the day is 13h and 43min.
On the first day of August, sunrise is at 5:49 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 7:23 pm CDT.

Sunshine

The average sunshine in August in Grape Creek is 9.9h.

UV index

The months with the highest UV index in Grape Creek are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum daily UV index of 6 during August morphs into the following directions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What is the temperature in August in Grape Creek?

The high-temperature, in August, in Grape Creek, records 80.6°F (27°C), while the low-temperature is 63.3°F (17.4°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is appraised at 86°F (30°C).

What is the average humidity in August in Grape Creek?

The average relative humidity in August in Grape Creek, Illinois, is 83%.

How much does it rain in Grape Creek in August?

In Grape Creek, Illinois, in August, it is raining for 14.6 days, with typically 2.24" (57mm) of accumulated precipitation.

When it does not snow in Grape Creek?

In Grape Creek, Illinois, snow does not fall in May through October.

What is the average length of the day in August in Grape Creek?

In August, the average day length in Grape Creek, Illinois, is 13h and 43min.

When is the sunrise / sunset in August in Grape Creek?

On the first day of August, sunrise is at 5:49 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 7:23 pm CDT.

How many hours of sunshine does Grape Creek have in August?

The average sunshine duration in August in Grape Creek is 9.9h.

What are the months with the highest UV index in Grape Creek?

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

How high is the UV index in August in Grape Creek?

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

Average temperature in August - Grape Creek, IL
  • Average high temperature in August: 80.6°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 (31.6°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

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Average pressure in August
Grape Creek, IL

Average pressure in August - Grape Creek, 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 (29.93"Hg).

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Average wind speed in August
Grape Creek, IL

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

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

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Average humidity in August
Grape Creek, IL

Average humidity in August - Grape Creek, IL
  • Average humidity in August: 83%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in August
Grape Creek, IL

Average rainfall in August - Grape Creek, IL
  • Average rainfall in August: 2.24"

The wettest month (with the highest rainfall) is April (3.23").
The driest months (with the least rainfall) are February and September (1.38").

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Average rainfall days in August
Grape Creek, IL

Average rainfall days in August - Grape Creek, IL
  • Average rainfall days in August: 14.6 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (6.6 days).

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Average snowfall in August
Grape Creek, IL

Average snowfall in August - Grape Creek, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Grape Creek, IL

Average snowfall days in August - Grape Creek, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (10.6 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
Grape Creek, IL

Average daylight in August / Average sunshine in August - Grape Creek, 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: 4h and 0min).

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Average sunshine days in August
Grape Creek, IL

Average sunshine days in August - Grape Creek, IL
  • Average sunshine days in August: 11.9 days

The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (9.5 days).

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Average UV index in August
Grape Creek, IL

Average UV index in August - Grape Creek, 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
Grape Creek, IL

Average cloud cover in August - Grape Creek, IL
  • Average cloud cover in August: 32

The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are June, August and September (Cloud cover 32).

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Average visibility in August
Grape Creek, IL

Average visibility in August - Grape Creek, 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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Grape Creek, Illinois, USA

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