August weather forecastBlue Island, IL
August
Weather in August
August, the last month of the summer in Blue Island, is another warm month, with an average temperature varying between 79.9°F (26.6°C) and 65.8°F (18.8°C).Temperature
August registers an average high-temperature of a still warm 79.9°F (26.6°C), slightly varied from July's 81°F (27.2°C). Blue Island's August nights cool down to an average low-temperature of 65.8°F (18.8°C).Humidity
In August, the average relative humidity in Blue Island is 76%.Rainfall
In Blue Island, during August, the rain falls for 16.3 days and regularly aggregates up to 2.72" (69mm) of precipitation. Throughout the year, in Blue Island, there are 147.7 rainfall days, and 23.62" (600mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Blue Island.Daylight
In August, the average length of the day 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
With an average of 10.5h of sunshine, August has the most sunshine of the year.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Blue Island, Illinois. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 6 in August interprets into the following advice:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Blue Island, 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
Blue Island, 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
Blue Island, 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
Blue Island, 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
Blue Island, 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
Blue Island, 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
Blue Island, 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
Blue Island, 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
Blue Island, IL
- Average daylight in August: 13h and 48min
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 30min
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
Blue Island, 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
Blue Island, 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
Blue Island, 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
Blue Island, 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).
