Detroit
Michigan, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Detroit, MI

The downtown city of Detroit, Michigan, viewed from a bird
The downtown city of Detroit, Michigan, viewed from a bird's eye angle
August, the last month of the summer, in Detroit, is another warm month, with average temperature ranging between min 64.9°F (18.3°C) and max 78.4°F (25.8°C).

Temperature

In August, the average high-temperature is relatively the same as in July - a still moderately hot 78.4°F (25.8°C). In Detroit, in August, the average low-temperature is 64.9°F (18.3°C).

Humidity

Months with the lowest humidity in Detroit are July and August, with an average relative humidity of 73%.

Rainfall

In Detroit, during August, the rain falls for 15.2 days and regularly aggregates up to 2.44" (62mm) of precipitation. Throughout the year, in Detroit, there are 152.1 rainfall days, and 23.43" (595mm) of precipitation is accumulated.

Snowfall

In Detroit, Michigan, snow does not fall in June through September.

Ocean temperature

With an average ocean temperature of 75.4°F (24.1°C), August is the month with the warmest seawater.
Note: For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 75.4°F (24.1°C).

Daylight

In Detroit, the average length of the day is 13.8h.

Sunshine

In Detroit, the average sunshine is 10.5h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in August in Detroit?

In August, in Detroit, the average high-temperature is 78.4°F (25.8°C), and the average low-temperature is 64.9°F (18.3°C).

What are the least humid months in Detroit?

July and August, with an average relative humidity of 73%, are the least humid months in Detroit.

What is the average humidity in August in Detroit?

In Detroit, Michigan, the average relative humidity in August is 73%.

How much does it rain in Detroit in August?

In August, in Detroit, the rain falls for 15.2 days. Throughout August, 2.44" (62mm) of precipitation is accumulated.

When it does not snow in Detroit?

In Detroit, Michigan, snow does not fall in June through September.

What is the month with the warmest ocean in Detroit?

The month with the warmest seawater in Detroit is August, with an average ocean temperature of 75.4°F (24.1°C).

What is the ocean temperature in August in Detroit?

In August, the average ocean temperature is 75.4°F (24.1°C). For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 75.4°F (24.1°C).

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

The average length of the day in August in Detroit is 13.8h.

How many hours of sunshine does Detroit have in August?

In August, the average sunshine in Detroit is 10.5h.

When is the highest UV index in Detroit?

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

What is the UV index reading in August in Detroit?

The average daily maximum UV index in August in Detroit, Michigan, is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the UV radiation.
Average temperature in August - Detroit, MI
  • Average high temperature in August: 78.4°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (29.3°F).

  • Average low temperature in August: 64.9°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 (19.6°F).

Average humidity in August - Detroit, MI
  • Average humidity in August: 73%

The month with the highest relative humidity is February (85%).
Months with the lowest relative humidity are July and August (73%).

Average rainfall in August - Detroit, MI
  • Average rainfall in August: 2.44"

The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the lowest rainfall) is February (1.22").

Average rainfall days in August - Detroit, MI
  • Average rainfall days in August: 15.2 days

The month with the highest number of rainy days is May (16.8 days).
The month with the lowest number of rainy days is January (7.1 days).

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

The month with the highest snowfall is January (4.29").
Months with the lowest snowfall are June, July, August and September (0").

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

The month with the highest number of snowfall days is January (14.5 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average sea temperature in August - Detroit, MI
  • Average sea temperature in August: 75.4°F

The best month for swimming (with the highest average sea temperature) is August (75.4°F).
The coldest month (with the lowest average sea temperature) is February (32.7°F).

Average daylight in August / Average sunshine in August - Detroit, MI
  • Average daylight in August: 13.8h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.1h).

  • Average sunshine in August: 10.5h

The month with most sunshine is July (Average sunshine: 10.6h).
The month with least sunshine is January (Average sunshine: 3.2h).

Average UV index in August - Detroit, MI
  • Average UV index in August: 6

Months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).