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
The average high-temperature for August is a still moderately hot 78.6°F (25.9°C), closely aligning with the temperature of the preceding month. Round Lake, during the month of August, experiences an average low-temperature of 63.1°F (17.3°C).Humidity
In Round Lake, the average relative humidity in August is 79%.Rainfall
In Round Lake, in August, during 16 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. In Round Lake, during the entire year, the rain falls for 142.3 days and collects up to 21.97" (558mm) of precipitation.Snowfall
In Round Lake, snow does not fall in June through September.Daylight
The average length of the day in August is 13h and 50min.On the first day of August, sunrise is at 5:45 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:27 pm CDT.
Sunshine
August has the most sunshine of the year, 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 of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 6 during August, leads to the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Round Lake in August?
What is the average humidity in August in Round Lake?
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 many hours of sunshine does Round Lake have in August?
When is the highest UV index?
How high is the UV index in August?
Average temperature in August
Round Lake, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location