August weather forecast
Ann Arbor, MI

The vast University of Michigan Law School Campus in Ann Arbor, Michigan
The vast University of Michigan Law School Campus in Ann Arbor, Michigan

Weather in August

The last month of the summer, August, is another warm month in Ann Arbor, Michigan, with an average temperature fluctuating between 78.3°F (25.7°C) and 61.2°F (16.2°C).

Temperature

In Ann Arbor, the average high-temperature in August is essentially the same as in July - a still warm 78.3°F (25.7°C). The average low-temperature, in Ann Arbor, is 61.2°F (16.2°C).

Humidity

In Ann Arbor, the average relative humidity in August is 79%.

Rainfall

In Ann Arbor, Michigan, it is raining for 15.4 days, with typically 2.05" (52mm) of accumulated precipitation. In Ann Arbor, during the entire year, the rain falls for 144.9 days and collects up to 18.82" (478mm) of precipitation.

Snowfall

June through September are months without snowfall in Ann Arbor.

Daylight

The average length of the day in August in Ann Arbor is 13h and 50min.
On the first day of August, sunrise is at 6:28 am and sunset at 8:54 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 8:10 pm EDT.

Sunshine

In August, the average sunshine is 10.1h.

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 hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 6 in August interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in August in Ann Arbor?

In August, the average relative humidity in Ann Arbor, Michigan, is 79%.

How much does it rain in Ann Arbor in August?

In Ann Arbor, in August, during 15.4 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

When it does not snow in Ann Arbor?

In Ann Arbor, snow does not fall in June through September.

What is the average length of the day in August in Ann Arbor?

The average day length in August is 13h and 50min.

When is the sunrise / sunset in August in Ann Arbor?

In August, on the first day of the month, sunrise is at 6:28 am and sunset at 8:54 pm. On the last day of the month, in Ann Arbor, Michigan, sunrise is at 6:59 am and sunset at 8:10 pm EDT.

How long on average sun shines in August in Ann Arbor?

In August, the average sunshine duration in Ann Arbor, Michigan, is 10.1h.

What is the month with the highest UV index in Ann Arbor?

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

How high is the UV index in August in Ann Arbor?

In August, the average daily maximum UV index in Ann Arbor, Michigan, is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.

Average temperature in August
Ann Arbor, MI

Average temperature in August - Ann Arbor, MI
  • Average high temperature in August: 78.3°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 (28.2°F).

  • Average low temperature in August: 61.2°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).

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Average pressure in August
Ann Arbor, MI

Average pressure in August - Ann Arbor, MI
  • Average pressure in August: 29.98"Hg

The months with the highest atmospheric pressure are March and November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in August
Ann Arbor, MI

Average wind speed in August - Ann Arbor, MI
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

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Average humidity in August
Ann Arbor, MI

Average humidity in August - Ann Arbor, MI
  • Average humidity in August: 79%

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in August
Ann Arbor, MI

Average rainfall in August - Ann Arbor, MI
  • Average rainfall in August: 2.05"

The wettest month (with the highest rainfall) is May (2.4").
The driest month (with the least rainfall) is December (0.87").

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Average rainfall days in August
Ann Arbor, MI

Average rainfall days in August - Ann Arbor, MI
  • Average rainfall days in August: 15.4 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (5.2 days).

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Average snowfall in August
Ann Arbor, MI

Average snowfall in August - Ann Arbor, MI
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Ann Arbor, MI

Average snowfall days in August - Ann Arbor, MI
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Ann Arbor, MI

Average daylight in August / Average sunshine in August - Ann Arbor, MI
  • Average daylight in August: 13h and 50min

The month with the longest days is June (Average daylight: 15h and 13min).
The month with the shortest days is December (Average daylight: 9h and 9min).

  • Average sunshine in August: 10.1h

The month with the most sunshine is July (Average sunshine: 10.5h).
The month with the least sunshine is January (Average sunshine: 3h).

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Average sunshine days in August
Ann Arbor, MI

Average sunshine days in August - Ann Arbor, MI
  • Average sunshine days in August: 12 days

The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is July (10.3 days).

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Average UV index in August
Ann Arbor, MI

Average UV index in August - Ann Arbor, MI
  • Average UV index in August: 6

The 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).

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Average cloud cover in August
Ann Arbor, MI

Average cloud cover in August - Ann Arbor, MI
  • Average cloud cover in August: 31

The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in August
Ann Arbor, MI

Average visibility in August - Ann Arbor, MI
  • Average visibility in August: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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