Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
August brings a marginal elevation to a still moderately hot 79.9°F (26.6°C) from July's 81°F (27.2°C) in Merrionette Park's average high-temperatures. Merrionette Park's temperature drops to an average low of 65.8°F (18.8°C) during the nights of August.Humidity
In August, the average relative humidity is 76%.Rainfall
In Merrionette Park, in August, during 16.3 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, in Merrionette Park, there are 147.7 rainfall days, and 23.62" (600mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In Merrionette Park, the average length of the day in August is 13h and 48min.On the first day of August, 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.
Sunshine
August has the most sunshine of the year, 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. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
What is the average length of the day in August?
When are sunrise and sunset in August?
What month has the most sunshine?
How long on average sun shines in August?
What are the months with the highest UV index?
What is the UV index reading in August?
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).
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).
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).
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%).
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").
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).
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").
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).
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).
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).
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).
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).
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).
Merrionette Park, Illinois, USA
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