August weather forecast
Detroit, IL

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Weather in August

August, the last month of the summer in Detroit, is also a moderately hot month, with an average temperature ranging between min 65.5°F (18.6°C) and max 83.5°F (28.6°C).

Temperature

August's beginning signals an average high-temperature of a still moderately hot 83.5°F (28.6°C), barely different from July's 84.4°F (29.1°C). Throughout August, the average low-temperature in Detroit dips to a comfortable 65.5°F (18.6°C).

Heat index

The heat index value for August is computed to be a hot 91.4°F (33°C). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Observations indicate that the heat index values are for shady locations with light wind. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', reflects the feeling of heat when considering both air temperature and humidity. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.

Humidity

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

Rainfall

In Detroit, in August, during 12.4 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. In Detroit, during the entire year, the rain falls for 128.8 days and collects up to 18.35" (466mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 41min.
On the first day of August, sunrise is at 6:02 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:34 pm CDT.

Sunshine

In Detroit, the average sunshine in August is 10h.

UV index

The months with the highest UV index in Detroit, Illinois, 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 exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum UV index of 6 in August translates into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

How hot does it get in Detroit in August?

An average high-temperature, in August, in Detroit, is 83.5°F (28.6°C) and the average low-temperature is 65.5°F (18.6°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is computed to be 91.4°F (33°C).

What is the average humidity in August in Detroit?

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

How much does it rain in Detroit in August?

In August, in Detroit, Illinois, the rain falls for 12.4 days. Throughout August, 1.85" (47mm) of precipitation is accumulated.

When it does not snow in Detroit?

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

What is the average length of the day in August in Detroit?

In August, the average day length in Detroit, Illinois, is 13h and 41min.

What time are sunrise and sunset in August in Detroit?

On the first day of August in Detroit, sunrise is at 6:02 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:34 pm CDT.

How long on average sun shines in August in Detroit?

The average sunshine duration in August is 10h.

What is the month with the highest UV index in Detroit?

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

How high is the UV index in August in Detroit?

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high hazard to health 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
Detroit, IL

Average temperature in August - Detroit, IL
  • Average high temperature in August: 83.5°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in August: 65.5°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in August
Detroit, IL

Average pressure in August - Detroit, IL
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in August
Detroit, IL

Average wind speed in August - Detroit, IL
  • Average wind speed in August: 6.2mph

The windiest months (with the highest average wind speed) are January, February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6mph).

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Average humidity in August
Detroit, IL

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

The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Detroit, IL

Average rainfall in August - Detroit, IL
  • Average rainfall in August: 1.85"

The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.75").

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Average rainfall days in August
Detroit, IL

Average rainfall days in August - Detroit, IL
  • Average rainfall days in August: 12.4 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.5 days).

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Average snowfall in August
Detroit, IL

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

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Detroit, IL

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

The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Detroit, 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: 10h and 0min

The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days in August
Detroit, IL

Average sunshine days in August - Detroit, IL
  • Average sunshine days in August: 16.4 days

The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is June (12.3 days).

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Average UV index in August
Detroit, IL

Average UV index in August - Detroit, 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).

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Average cloud cover in August
Detroit, IL

Average cloud cover in August - Detroit, IL
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 29).

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Average visibility in August
Detroit, IL

Average visibility in August - Detroit, 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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Detroit, Illinois, USA

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