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
On the advent of August, Round Lake's average high-temperature exhibits a minor adjustment to a still moderately hot 78.6°F (25.9°C) from July's 79.9°F (26.6°C). An average low-temperature of 63.1°F (17.3°C) is common in Round Lake during the nights of August.Humidity
The average relative humidity in August in Round Lake is 79%.Rainfall
In August, the rain falls for 16 days. Throughout August, 2.64" (67mm) of precipitation is 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
June through September are months without snowfall in Round Lake.Daylight
In August, the average length of the day is 13h and 50min.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, Illinois, sunrise is at 6:17 am and sunset at 7:27 pm CDT.
Sunshine
With an average of 10.2h of sunshine, August has the most sunshine of the year.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 6 during August leads to these advisories:
Shield from overexposure. Defense against sun-related harm is required. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Frequently asked questions
What are August temperatures in Round Lake?
What is the average humidity in August in Round Lake?
How many days does it rain in August in Round Lake?
When it does not snow in Round Lake?
How many hours of daylight does Round Lake have in August?
When are sunrise and sunset in August in Round Lake?
What month has the most sunshine in Round Lake?
How long on average sun shines in August in Round Lake?
When is the highest UV index in Round Lake?
How high is the UV index in August in Round Lake?
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
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