August weather forecast
Bonnie, IL

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Weather in August

August, the last month of the summer in Bonnie, is also a moderately hot month, with an average temperature fluctuating between 84°F (28.9°C) and 65.8°F (18.8°C).

Temperature

The arrival of August sees an average high-temperature of a still warm 84°F (28.9°C), hardly diverging from July's 85.6°F (29.8°C). The mean low-temperature during August nights in Bonnie is a comfortable 65.8°F (18.8°C).

Heat index

The heat index value during August is computed to be a hot 93.2°F (34°C). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.

Humidity

In Bonnie, the average relative humidity in August is 78%.

Rainfall

In Bonnie, during August, the rain falls for 13.4 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, in Bonnie, Illinois, there are 145.8 rainfall days, and 29.13" (740mm) of precipitation is accumulated.

Snowfall

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

Daylight

In August, the average length of the day in Bonnie, Illinois, is 13h and 36min.
On the first day of the month, sunrise is at 5:58 am and sunset at 8:04 pm. On the last day of August, sunrise is at 6:25 am and sunset at 7:26 pm CDT.

Sunshine

The average sunshine in August is 10.2h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index in Bonnie. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A daily high UV index of 6 in August leads to these guidelines:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
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Frequently asked questions

How hot is August in Bonnie?

The average high-temperature and low-temperature in Bonnie during August are 84°F (28.9°C) and 65.8°F (18.8°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 93.2°F (34°C).

What is the average humidity in August in Bonnie?

The average relative humidity in August in Bonnie is 78%.

How much does it rain in Bonnie in August?

In Bonnie, Illinois, in August, during 13.4 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.

When it does not snow in Bonnie?

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

How many hours of daylight does Bonnie have in August?

In August, the average day length is 13h and 36min.

When are sunrise and sunset in August in Bonnie?

In August, on the first day of the month, sunrise is at 5:58 am and sunset at 8:04 pm. On the last day of the month, in Bonnie, Illinois, sunrise is at 6:25 am and sunset at 7:26 pm CDT.

How many hours of sunshine does Bonnie have in August?

In Bonnie, Illinois, the average sunshine duration in August is 10.2h.

When is the highest UV index in Bonnie?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Bonnie.

How high is the UV index in August in Bonnie?

In Bonnie, Illinois, the average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
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
Bonnie, IL

Average temperature in August - Bonnie, IL
  • Average high temperature in August: 84°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in August: 65.8°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

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Average pressure in August
Bonnie, IL

Average pressure in August - Bonnie, 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 (29.93"Hg).

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Average wind speed in August
Bonnie, IL

Average wind speed in August - Bonnie, IL
  • Average wind speed in August: 5.9mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.9mph).

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Average humidity in August
Bonnie, IL

Average humidity in August - Bonnie, IL
  • Average humidity in August: 78%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Bonnie, IL

Average rainfall in August - Bonnie, IL
  • Average rainfall in August: 2.36"

The wettest month (with the highest rainfall) is April (3.78").
The driest month (with the least rainfall) is September (1.61").

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Average rainfall days in August
Bonnie, IL

Average rainfall days in August - Bonnie, IL
  • Average rainfall days in August: 13.4 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (7.5 days).

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Average snowfall in August
Bonnie, IL

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

The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Bonnie, IL

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

The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Bonnie, IL
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

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Average sunshine days in August
Bonnie, IL

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

The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is May (11.3 days).

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Average UV index in August
Bonnie, IL

Average UV index in August - Bonnie, IL
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).

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Average cloud cover in August
Bonnie, IL

Average cloud cover in August - Bonnie, IL
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 27).

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Average visibility in August
Bonnie, IL

Average visibility in August - Bonnie, IL
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Bonnie, Illinois, USA

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