August weather forecastCrystal Lawns, IL
August
Weather in August
August, the last month of the summer in Crystal Lawns, is another warm month, with temperature in the range of an average high of 80.1°F (26.7°C) and an average low of 62.8°F (17.1°C).Temperature
August's advent notes a subtle adjustment in average high-temperature to a still warm 80.1°F (26.7°C) from July. The nights of August anticipate an average low-temperature of 62.8°F (17.1°C).Humidity
In Crystal Lawns, Illinois, the average relative humidity in August is 82%.Rainfall
In Crystal Lawns, in August, during 15.8 rainfall days, 2.83" (72mm) of precipitation is typically accumulated. Throughout the year, there are 153.6 rainfall days, and 32.72" (831mm) of precipitation is accumulated.Snowfall
In Crystal Lawns, snow does not fall in May through October.Daylight
The average length of the day in August is 13h and 48min.On the first day of the month, sunrise is at 5:48 am and sunset at 8:09 pm. On the last day of August, sunrise is at 6:18 am and sunset at 7:26 pm CDT.
Sunshine
With an average of 9.7h of sunshine, August has the most sunshine of the year.UV index
In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 5 in August leads to these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Crystal Lawns, IL
- Average high temperature in August: 80.1°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in August: 62.8°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure in August
Crystal Lawns, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Crystal Lawns, IL
- Average wind speed in August: 5.9mph
The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in August
Crystal Lawns, IL
- Average humidity in August: 82%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in August
Crystal Lawns, IL
- Average rainfall in August: 2.83"
The wettest month (with the highest rainfall) is May (4.41").
The driest month (with the least rainfall) is February (1.61").
Average rainfall days in August
Crystal Lawns, IL
- Average rainfall days in August: 15.8 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in August
Crystal Lawns, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.33").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Crystal Lawns, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.9 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
Crystal Lawns, IL
- Average daylight in August: 13h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in August: 9h and 42min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Crystal Lawns, IL
- Average sunshine days in August: 11.8 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in August
Crystal Lawns, 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 and December (UV index 1).
Average cloud cover in August
Crystal Lawns, IL
- Average cloud cover in August: 34
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in August
Crystal Lawns, IL
- Average visibility in August: 5mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
