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 beginning of August records an average high-temperature of a still warm 79.9°F (26.6°C), almost echoing the conditions of the previous month. The average nighttime temperature lowers to a refreshing 63.1°F (17.3°C) throughout August.Humidity
In August, the average relative humidity is 83%.Rainfall
In August, the rain falls for 15.9 days. Throughout August, 2.68" (68mm) of precipitation is accumulated. Throughout the year, there are 163.1 rainfall days, and 33.62" (854mm) of precipitation is accumulated.Snowfall
In Gillum, snow does not fall in May through September.Daylight
In Gillum, the average length of the day in August is 13h and 44min.On the first day of the month, sunrise is at 5:53 am and sunset at 8:10 pm. On the last day of August, sunrise is at 6:22 am and sunset at 7:28 pm CDT.
Sunshine
The average sunshine in August is 9.6h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 6 in August leads to these recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Gillum in August?
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 Gillum have in August?
When are sunrise and sunset in August?
How many hours of sunshine does Gillum have in August?
When is the highest UV index?
How high is the UV index in August?
Average temperature in August
Gillum, IL
- Average high temperature in August: 79.9°F
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in August: 63.1°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 (18.9°F).
Average pressure in August
Gillum, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Gillum, IL
- Average wind speed in August: 6.6mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in August
Gillum, IL
- Average humidity in August: 83%
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Gillum, IL
- Average rainfall in August: 2.68"
The wettest month (with the highest rainfall) is May (4.57").
The driest month (with the least rainfall) is December (1.93").
Average rainfall days in August
Gillum, IL
- Average rainfall days in August: 15.9 days
The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in August
Gillum, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Gillum, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.8 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
Gillum, IL
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 9h and 4min
The month with the most sunshine is June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in August
Gillum, IL
- Average sunshine days in August: 11.8 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (8.4 days).
Average UV index in August
Gillum, IL
- Average UV index in August: 6
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in August
Gillum, IL
- Average cloud cover in August: 33
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 33).
Average visibility in August
Gillum, IL
- Average visibility in August: 5mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Gillum, Illinois, USA
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