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
August's weather displays an average high-temperature of a still moderately hot 82.6°F (28.1°C), slightly varied from July's 83.8°F (28.8°C). Hillsboro experiences a mean temperature of 64.9°F (18.3°C) during August nights.Heat index
During August, the heat index is computed to be a hot 91.4°F (33°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.When referencing the heat index, its values are suitable for shady environments and light breezes. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Humidity
In August, the average relative humidity is 81%.Rainfall
In Hillsboro, during August, the rain falls for 12.3 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, in Hillsboro, there are 138.5 rainfall days, and 24.33" (618mm) of precipitation is accumulated.Snowfall
In Hillsboro, snow does not fall in April through October.Daylight
In Hillsboro, the average length of the day in August is 13h and 39min.On the first day of August in Hillsboro, sunrise is at 5:59 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:29 pm CDT.
Sunshine
In August, the average sunshine is 9.8h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Hillsboro, Illinois. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.Note: In August, the UV index of 6 transforms into the following advice:
Ward off overexposure. Defence against solar harm is crucial. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Hillsboro during August?
What is the average humidity in August in Hillsboro?
How many days does it rain in August in Hillsboro?
When it does not snow in Hillsboro?
What is the average length of the day in August in Hillsboro?
When is the sunrise / sunset in August in Hillsboro?
How long on average sun shines in August in Hillsboro?
When is the highest UV index in Hillsboro?
What is the UV index reading in August in Hillsboro?
Average temperature in August
Hillsboro, IL
- Average high temperature in August: 82.6°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in August: 64.9°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in August
Hillsboro, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in August
Hillsboro, IL
- Average wind speed in August: 6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).
Average humidity in August
Hillsboro, IL
- Average humidity in August: 81%
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Hillsboro, IL
- Average rainfall in August: 2.36"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days in August
Hillsboro, IL
- Average rainfall days in August: 12.3 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (7 days).
Average snowfall in August
Hillsboro, IL
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Hillsboro, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (6.2 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
Hillsboro, IL
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in August: 9h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in August
Hillsboro, IL
- Average sunshine days in August: 15.5 days
The month with the most sunshine days is October (19.8 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in August
Hillsboro, 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, November and December (UV index 2).
Average cloud cover in August
Hillsboro, IL
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and September (Cloud cover 29).
Average visibility in August
Hillsboro, IL
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Hillsboro, Illinois, USA
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