August weather forecast
Marquette Heights, IL

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Weather in August

August, the last month of the summer in Marquette Heights, is another warm month, with temperature in the range of an average low of 63.3°F (17.4°C) and an average high of 81.3°F (27.4°C).

Temperature

As Marquette Heights welcomes August, the average high-temperature stabilizes at a still moderately hot 81.3°F (27.4°C), showing little deviation from July's 82°F (27.8°C). The average low-temperature in Marquette Heights, Illinois, during August nights is a comfortable 63.3°F (17.4°C).

Heat index

The heat index value for August is evaluated at a hot 87.8°F (31°C). Remaining active during long-lasting exposure could cause fatigue, leading to heat cramps.
Heat index data is primarily for areas with shade and subjected to light winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.

Humidity

In August, the average relative humidity is 81%.

Rainfall

In August, the rain falls for 14.4 days. Throughout August, 2.17" (55mm) of precipitation is accumulated. Throughout the year, in Marquette Heights, there are 153.3 rainfall days, and 29.61" (752mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall in Marquette Heights.

Daylight

In Marquette Heights, Illinois, the average length of the day in August is 13h and 44min.
On the first day of August, sunrise is at 5:56 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:31 pm CDT.

Sunshine

In August, the average sunshine is 9.9h.

UV index

In August, the average daily maximum UV index in Marquette Heights, Illinois, is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily maximum UV index of 5 in August translates into the following instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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Frequently asked questions

What is the usual temperature for Marquette Heights in August?

During August, Marquette Heights experiences an average high-temperature of 81.3°F (27.4°C) and a low-temperature of 63.3°F (17.4°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, in August is evaluated at 87.8°F (31°C).

What is the average humidity in August in Marquette Heights?

In August, the average relative humidity in Marquette Heights, Illinois, is 81%.

How many days does it rain in August in Marquette Heights?

In August, in Marquette Heights, Illinois, the rain falls for 14.4 days. Throughout August, 2.17" (55mm) of precipitation is accumulated.

When it does not snow in Marquette Heights?

In Marquette Heights, snow does not fall in May through September.

How many hours of daylight does Marquette Heights have in August?

In August, the average day length in Marquette Heights, Illinois, is 13h and 44min.

What time are sunrise and sunset in August in Marquette Heights?

On the first day of August in Marquette Heights, sunrise is at 5:56 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:31 pm CDT.

How long on average sun shines in August in Marquette Heights?

In Marquette Heights, the average sunshine duration in August is 9.9h.

How high is the UV index in August in Marquette Heights?

The average daily maximum UV index in August in Marquette Heights is 5. A UV Index of 3 to 5 symbolizes 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
Marquette Heights, IL

Average temperature in August - Marquette Heights, IL
  • Average high temperature in August: 81.3°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (19°F).

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Average pressure in August
Marquette Heights, IL

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in August
Marquette Heights, IL

Average wind speed in August - Marquette Heights, IL
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in August
Marquette Heights, IL

Average humidity in August - Marquette Heights, IL
  • Average humidity in August: 81%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Marquette Heights, IL

Average rainfall in August - Marquette Heights, IL
  • Average rainfall in August: 2.17"

The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is December (1.54").

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Average rainfall days in August
Marquette Heights, IL

Average rainfall days in August - Marquette Heights, IL
  • Average rainfall days in August: 14.4 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (6.3 days).

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Average snowfall in August
Marquette Heights, IL

Average snowfall in August - Marquette Heights, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (3.86").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Marquette Heights, IL

Average snowfall days in August - Marquette Heights, 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
Marquette Heights, IL

Average daylight in August / Average sunshine in August - Marquette Heights, 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 18min).

  • 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
Marquette Heights, IL

Average sunshine days in August - Marquette Heights, IL
  • Average sunshine days in August: 14.2 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (10 days).

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Average UV index in August
Marquette Heights, IL

Average UV index in August - Marquette Heights, 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, February, November and December (UV index 2).

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Average cloud cover in August
Marquette Heights, IL

Average cloud cover in August - Marquette Heights, IL
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 30).

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Average visibility in August
Marquette Heights, IL

Average visibility in August - Marquette Heights, 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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Marquette Heights, Illinois, USA

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