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
A minimal variation is noted in Round Lake Beach's average high-temperature at the onset of August, reaching a still moderately hot 78.6°F (25.9°C) from July's 79.9°F (26.6°C). Round Lake Beach's nights in August experience an average temperature drop to a comfortable 63.1°F (17.3°C).Humidity
In August, the average relative humidity is 79%.Rainfall
In Round Lake Beach, in August, it is raining for 16 days, with typically 2.64" (67mm) of accumulated precipitation. In Round Lake Beach, Illinois, during the entire year, the rain falls for 142.3 days and collects up to 21.97" (558mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in August is 13h and 51min.On the first day of the month, sunrise is at 5:45 am and sunset at 8:11 pm. On the last day of August, in Round Lake Beach, sunrise is at 6:17 am and sunset at 7:27 pm CDT.
Sunshine
August has the most sunshine of the year in Round Lake Beach, Illinois, with an average of 10.2h of sunshine.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 6 during August morphs into the following directions:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average August temperature?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
How many hours of daylight does Round Lake Beach have in August?
What time are sunrise and sunset in August?
What month has the most sunshine?
How many hours of sunshine does Round Lake Beach have in August?
When is the highest UV index?
What is the UV index intensity in August?
Average temperature in August
Round Lake Beach, IL
- Average high temperature in August: 78.6°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in August: 63.1°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in August
Round Lake Beach, IL
- Average pressure in August: 29.98"Hg
The months with the highest atmospheric pressure are January and February (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Round Lake Beach, IL
- Average wind speed in August: 6.4mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in August
Round Lake Beach, IL
- Average humidity in August: 79%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in August
Round Lake Beach, IL
- Average rainfall in August: 2.64"
The wettest month (with the highest rainfall) is April (2.72").
The driest month (with the least rainfall) is December (0.98").
Average rainfall days in August
Round Lake Beach, IL
- Average rainfall days in August: 16 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is February (5 days).
Average snowfall in August
Round Lake Beach, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (3.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Round Lake Beach, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Round Lake Beach, 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 6min).
- Average sunshine in August: 10h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Round Lake Beach, IL
- Average sunshine days in August: 11.7 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in August
Round Lake Beach, IL
- Average UV index in August: 6
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Round Lake Beach, IL
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 30).
Average visibility in August
Round Lake Beach, IL
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Round Lake Beach, Illinois, USA
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