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 start of August sees the average high-temperature at a still moderately hot 81°F (27.2°C), showing little difference from July's 82°F (27.8°C). During the nights in August, Allerton experiences a consistent average temperature of 63.7°F (17.6°C).Heat index
August's average heat index is estimated at a tropical 86°F (30°C). Remaining active during long-lasting exposure could cause fatigue, leading to heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. 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 especially vital to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Humidity
The average relative humidity in August in Allerton is 82%.Rainfall
In Allerton, in August, it is raining for 13 days, with typically 1.46" (37mm) of accumulated precipitation. Throughout the year, in Allerton, there are 132 rainfall days, and 15.94" (405mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Allerton.Daylight
In Allerton, the average length of the day in August is 13h and 42min.On the first day of August in Allerton, sunrise is at 5:51 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:19 am and sunset at 7:24 pm CDT.
Sunshine
The average sunshine in August in Allerton, Illinois, is 10h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In August, a regular UV index of 6 translates into these guidelines:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Frequently asked questions
What is the average August temperature in Allerton?
What is the average humidity in August in Allerton?
How much does it rain in Allerton in August?
When it does not snow in Allerton?
What is the average length of the day in August in Allerton?
When are sunrise and sunset in August in Allerton?
How many hours of sunshine does Allerton have in August?
When is the highest UV index in Allerton?
How high is the UV index in August in Allerton?
Average temperature in August
Allerton, 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 (33.3°F).
- Average low temperature in August: 63.7°F
The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in August
Allerton, 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
Allerton, IL
- Average wind speed in August: 6.3mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).
Average humidity in August
Allerton, 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
Allerton, IL
- Average rainfall in August: 1.46"
The wettest month (with the highest rainfall) is April (1.97").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days in August
Allerton, IL
- Average rainfall days in August: 13 days
The month with the highest number of rainy days is July (15.7 days).
The month with the least rainy days is February (6 days).
Average snowfall in August
Allerton, IL
- Average snowfall in August: 0"
The month with the highest snowfall is December (1.26").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Allerton, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (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
Allerton, 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 24min).
- Average sunshine in August: 10h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in August
Allerton, IL
- Average sunshine days in August: 13.8 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in August
Allerton, 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
Allerton, 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
Allerton, 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).
Allerton, Illinois, USA
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