August weather forecastVernon Hills, IL
August
Weather in August
The last month of the summer, August, is also a moderately hot month in Vernon Hills, Illinois, with an average temperature ranging between min 63.7°F (17.6°C) and max 79.3°F (26.3°C).Temperature
Vernon Hills's average high-temperature in August is a still warm 79.3°F (26.3°C), marking an insignificant difference from the 80.4°F (26.9°C) of July. Vernon Hills's average low-temperature during August nights is observed to be a refreshing 63.7°F (17.6°C).Humidity
The average relative humidity in August is 77%.Rainfall
In Vernon Hills, during August, the rain falls for 15.8 days and regularly aggregates up to 2.87" (73mm) of precipitation. Throughout the year, there are 147.3 rainfall days, and 27.44" (697mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In August, the average length of the day is 13h and 50min.On the first day of August in Vernon Hills, sunrise is at 5:45 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:26 pm CDT.
Sunshine
July and August, with an average of 10.1h of sunshine, are months with the most 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 value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum UV index of 6 in August translates into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Vernon Hills, IL
- Average high temperature in August: 79.3°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in August: 63.7°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in August
Vernon Hills, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Vernon Hills, IL
- Average wind speed in August: 6.4mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in August
Vernon Hills, IL
- Average humidity in August: 77%
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
Vernon Hills, IL
- Average rainfall in August: 2.87"
The wettest month (with the highest rainfall) is June (3.54").
The driest months (with the least rainfall) are November and December (1.3").
Average rainfall days in August
Vernon Hills, IL
- Average rainfall days in August: 15.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in August
Vernon Hills, IL
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Vernon Hills, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Vernon Hills, 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 6min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Vernon Hills, IL
- Average sunshine days in August: 12.7 days
The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (10 days).
Average UV index in August
Vernon Hills, IL
- Average UV index in August: 6
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Vernon Hills, 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 and August (Cloud cover 30).
Average visibility in August
Vernon Hills, IL
- Average visibility in August: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
