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's arrival registers an average high-temperature of a still warm 79.9°F (26.6°C), closely aligning with the temperature of the previous month. Crestwood experiences an average low-temperature reading of 65.8°F (18.8°C) throughout August.Humidity
The average relative humidity in August is 76%.Rainfall
In Crestwood, Illinois, during August, the rain falls for 16.3 days and regularly aggregates up to 2.72" (69mm) of precipitation. In Crestwood, Illinois, during the entire year, the rain falls for 147.7 days and collects up to 23.62" (600mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In August, the average length of the day in Crestwood, Illinois, is 13h and 48min.On the first day of the month, sunrise is at 5:46 am and sunset at 8:08 pm. On the last day of August, in Crestwood, sunrise is at 6:16 am and sunset at 7:25 pm CDT.
Sunshine
With an average of 10.5h of sunshine, August has the most sunshine of the year in Crestwood.UV index
The months with the highest UV index in Crestwood 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 average individuals.Note: A maximum daily UV index of 6 during August morphs into the following directions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August in Crestwood?
What is the average humidity in August in Crestwood?
How many days does it rain in August in Crestwood?
When it does not snow in Crestwood?
What is the average length of the day in August in Crestwood?
When is the sunrise / sunset in August in Crestwood?
What month has the most sunshine in Crestwood?
How many hours of sunshine does Crestwood have in August?
When is the highest UV index in Crestwood?
What is the UV index intensity in August in Crestwood?
Average temperature in August
Crestwood, 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
Crestwood, 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
Crestwood, 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
Crestwood, 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
Crestwood, 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
Crestwood, 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
Crestwood, 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
Crestwood, 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
Crestwood, 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
Crestwood, 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
Crestwood, 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
Crestwood, 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
Crestwood, 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).
Crestwood, Illinois, USA
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