August weather forecast
Allenville, IL

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Weather in August

August, the last month of the summer in Allenville, is another warm month, with an average temperature ranging between max 81.5°F (27.5°C) and min 64°F (17.8°C).

Temperature

Allenville's shift into August is marked by a subtle change to a still moderately hot 81.5°F (27.5°C) from July's 82.2°F (27.9°C) in temperature. During the month of August, Allenville experiences a steady low-temperature average of 64°F (17.8°C).

Heat index

The heat index in August is evaluated at a hot 87.8°F (31°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.
One should consider that heat index numbers are for shaded settings and light wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.

Humidity

In Allenville, the average relative humidity in August is 82%.

Rainfall

In Allenville, in August, during 13 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. In Allenville, during the entire year, the rain falls for 130.9 days and collects up to 15.43" (392mm) of precipitation.

Snowfall

In Allenville, Illinois, snow does not fall in May through October.

Daylight

In Allenville, the average length of the day in August is 13h and 41min.
On the first day of the month, sunrise is at 5:54 am and sunset at 8:06 pm. On the last day of August, sunrise is at 6:22 am and sunset at 7:26 pm CDT.

Sunshine

The average sunshine in August is 9.8h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 6 in August converts into the following recommendations:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Updated: Jun 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August?

In Allenville, in August, the average high-temperature is 81.5°F (27.5°C), and the average low-temperature is 64°F (17.8°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is evaluated at 87.8°F (31°C).

What is the average humidity in August?

In August, the average relative humidity is 82%.

How many days does it rain in August?

In Allenville, Illinois, during August, the rain falls for 13 days and regularly aggregates up to 1.54" (39mm) of precipitation.

When it does not snow?

In Allenville, snow does not fall in May through October.

How many hours of daylight does Allenville have in August?

The average day length in August is 13h and 41min.

What time are sunrise and sunset in August in Allenville?

In August, on the first day of the month, sunrise is at 5:54 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:22 am and sunset at 7:26 pm CDT.

How many hours of sunshine does Allenville have in August?

In August, the average sunshine duration is 9.8h.

When is the highest UV index?

The months with the highest UV index in Allenville are June through August, with an average maximum UV index of 6.

How high is the UV index in August?

In August, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Allenville, IL

Average temperature in August - Allenville, IL
  • Average high temperature in August: 81.5°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in August: 64°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
Allenville, IL

Average pressure in August - Allenville, 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
Allenville, IL

Average wind speed in August - Allenville, IL
  • Average wind speed in August: 6.3mph

The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

Average humidity in August
Allenville, IL

Average humidity in August - Allenville, 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
Allenville, IL

Average rainfall in August - Allenville, IL
  • Average rainfall in August: 1.54"

The wettest month (with the highest rainfall) is June (1.85").
The driest month (with the least rainfall) is February (0.71").

Average rainfall days in August
Allenville, IL

Average rainfall days in August - Allenville, IL
  • Average rainfall days in August: 13 days

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (5.9 days).

Average snowfall in August
Allenville, IL

Average snowfall in August - Allenville, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Allenville, IL

Average snowfall days in August - Allenville, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Allenville, IL

Average daylight in August / Average sunshine in August - Allenville, 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 24min).

  • 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 6min).

Average sunshine days in August
Allenville, IL

Average sunshine days in August - Allenville, IL
  • Average sunshine days in August: 15.6 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is May (12.3 days).

Average UV index in August
Allenville, IL

Average UV index in August - Allenville, 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
Allenville, IL

Average cloud cover in August - Allenville, 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
Allenville, IL

Average visibility in August - Allenville, 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).

Allenville, Illinois, USA

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