August weather forecast
Merrionette Park, IL

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Weather in August

August, the last month of the summer in Merrionette Park, is another warm month, with an average temperature ranging between max 79.9°F (26.6°C) and min 65.8°F (18.8°C).

Temperature

Merrionette Park's August average high-temperature settles at a still warm 79.9°F (26.6°C), showing a near match with the preceding month. Throughout the month of August, Merrionette Park sees a steady low-temperature average of 65.8°F (18.8°C).

Humidity

In Merrionette Park, the average relative humidity in August is 76%.

Rainfall

In Merrionette Park, in August, it is raining for 16.3 days, with typically 2.72" (69mm) of accumulated precipitation. Throughout the year, there are 147.7 rainfall days, and 23.62" (600mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Merrionette Park, the average length of the day in August is 13h and 48min.
On the first day of the month, sunrise is at 5:45 am and sunset at 8:08 pm. On the last day of August, sunrise is at 6:16 am and sunset at 7:25 pm CDT.

Sunshine

August has the most sunshine of the year in Merrionette Park, Illinois, with an average of 10.5h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Merrionette Park. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 6 during August translates into these guidelines:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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Frequently asked questions

What are August temperatures in Merrionette Park?

In Merrionette Park, in August, the average high-temperature is 79.9°F (26.6°C), and the average low-temperature is 65.8°F (18.8°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in July is appraised at 86°F (30°C).

What is the average humidity in August in Merrionette Park?

In August, the average relative humidity in Merrionette Park is 76%.

How much does it rain in Merrionette Park in August?

In Merrionette Park, Illinois, in August, it is raining for 16.3 days, with typically 2.72" (69mm) of accumulated precipitation.

When it does not snow in Merrionette Park?

May through September are months without snowfall in Merrionette Park.

How many hours of daylight does Merrionette Park have in August?

The average day length in August in Merrionette Park, Illinois, is 13h and 48min.

When are sunrise and sunset in August in Merrionette Park?

On the first day of August in Merrionette Park, sunrise is at 5:45 am and sunset at 8:08 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:25 pm CDT.

What month has the most sunshine in Merrionette Park?

August has the most sunshine of the year in Merrionette Park, with an average of 10.5h of sunshine.

How long on average sun shines in August in Merrionette Park?

In Merrionette Park, Illinois, the average sunshine duration in August is 10.5h.

What are the months with the highest UV index in Merrionette Park?

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

What is the UV index intensity in August in Merrionette Park?

In August, the average daily maximum UV index in Merrionette Park, Illinois, is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Merrionette Park, IL

Average temperature in August - Merrionette Park, IL
  • Average high temperature in August: 79.9°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.5°F).

  • Average low temperature in August: 65.8°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure in August
Merrionette Park, IL

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in August
Merrionette Park, IL

Average wind speed in August - Merrionette Park, IL
  • Average wind speed in August: 6.5mph

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

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Average humidity in August
Merrionette Park, IL

Average humidity in August - Merrionette Park, IL
  • Average humidity in August: 76%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in August
Merrionette Park, IL

Average rainfall in August - Merrionette Park, IL
  • Average rainfall in August: 2.72"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is December (1.02").

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Average rainfall days in August
Merrionette Park, IL

Average rainfall days in August - Merrionette Park, IL
  • Average rainfall days in August: 16.3 days

The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is February (4.9 days).

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Average snowfall in August
Merrionette Park, IL

Average snowfall in August - Merrionette Park, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.07").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Merrionette Park, IL

Average snowfall days in August - Merrionette Park, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (11.8 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
Merrionette Park, IL

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

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

  • Average sunshine in August: 10h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days in August
Merrionette Park, IL

Average sunshine days in August - Merrionette Park, IL
  • Average sunshine days in August: 10 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (9.8 days).

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Average UV index in August
Merrionette Park, IL

Average UV index in August - Merrionette Park, IL
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in August
Merrionette Park, IL

Average cloud cover in August - Merrionette Park, IL
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 28).

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Average visibility in August
Merrionette Park, IL

Average visibility in August - Merrionette Park, IL
  • Average visibility in August: 6mi

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

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Merrionette Park, Illinois, USA

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