August weather forecastArcola, IL
August
Weather in August
August, the last month of the summer in Arcola, is another warm month, with an average temperature ranging between min 63.9°F (17.7°C) and max 81°F (27.2°C).Temperature
As August unfolds, the average high-temperature reaches a still warm 81°F (27.2°C), hinting at a slight fluctuation from the previous month. During the month of August, an average temperature of 63.9°F (17.7°C) is noted during the nights in Arcola.Heat index
The average heat index in August is computed to be a tropical 86°F (30°C). Exposure and extended activity could potentially cause a state of fatigue and lead to heat cramps.One should consider that heat index numbers are for shaded settings and light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
In Arcola, the average relative humidity in August is 82%.Rainfall
In Arcola, in August, during 15 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. In Arcola, Illinois, during the entire year, the rain falls for 151.5 days and collects up to 25.71" (653mm) of precipitation.Snowfall
May through September are months without snowfall in Arcola.Daylight
The average length of the day in August in Arcola is 13h and 41min.On the first day of the month, sunrise is at 5:53 am and sunset at 8:05 pm. On the last day of August, in Arcola, sunrise is at 6:21 am and sunset at 7:25 pm CDT.
Sunshine
The average sunshine in August is 10h.UV index
The months with the highest UV index in Arcola are June through 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: A maximum daily UV index of 6 during August morphs into the following directions:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Arcola, IL
- Average high temperature in August: 81°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in August: 63.9°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in August
Arcola, IL
- Average pressure in August: 29.98"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in August
Arcola, IL
- Average wind speed in August: 6.3mph
The windiest months (with the highest average wind speed) are January and February (10.7mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in August
Arcola, IL
- Average humidity in August: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).
Average rainfall in August
Arcola, IL
- Average rainfall in August: 2.32"
The wettest month (with the highest rainfall) is April (3.15").
The driest month (with the least rainfall) is February (1.38").
Average rainfall days in August
Arcola, IL
- Average rainfall days in August: 15 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in August
Arcola, IL
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Arcola, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (8.5 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
Arcola, IL
- Average daylight in August: 13h and 42min
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 24min).
- Average sunshine in August: 10h and 0min
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 6min).
Average sunshine days in August
Arcola, IL
- Average sunshine days in August: 11.8 days
The months with the most sunshine days are October and November (17.5 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in August
Arcola, 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
Arcola, IL
- Average cloud cover in August: 31
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in August
Arcola, IL
- Average visibility in August: 5mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).





