August weather forecast
Ann Arbor, MI

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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

August maintains the summer heat in Ann Arbor, with a slight dip in temperature compared to July. The warm, sunny days continue to dominate the city's weather, inviting people to enjoy the outdoors, whether it is picnicking, hiking, or water activities. Despite the high temperatures, the amount of rainfall received during this month decreases slightly compared to the previous month. August sees a pattern consistent with its predecessor, with hot days and mild nights. Interestingly, the month shows minute changes in both High temperatures from 79.9°F (26.6°C) in July to 78.3°F (25.7°C) in August and relative humidity from 79% to 79%.

Temperature

August denotes a minimal variation in the average high-temperature to a still moderately hot 78.3°F (25.7°C) from July's 79.9°F (26.6°C). Ann Arbor records an average nighttime low of 61.2°F (16.2°C) in August.

Humidity

In August, the average relative humidity is 79%.

Rainfall

In August, in Ann Arbor, the rain falls for 15.4 days. Throughout August, 2.05" (52mm) of precipitation is accumulated. 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

In Ann Arbor, the average length of the day in August is 13h and 50min.
On the first day of the month, sunrise is at 6:28 am and sunset at 8:54 pm. On the last day of August, sunrise is at 7:00 am and sunset at 8:10 pm EDT.

Sunshine

The average sunshine in August in Ann Arbor, Michigan, 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 exposure to the Sun's UV radiation for average individuals.
Note: In August, the maximum UV index of 6 suggests these recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
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Frequently asked questions

What is the average August temperature in Ann Arbor?

During August, Ann Arbor experiences an average high-temperature of 78.3°F (25.7°C) and a low-temperature of 61.2°F (16.2°C).

What is the average humidity in August in Ann Arbor?

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

How much does it rain in Ann Arbor in August?

In Ann Arbor, in August, it is raining for 15.4 days, with typically 2.05" (52mm) of accumulated precipitation.

When it does not snow in Ann Arbor?

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

How many hours of daylight does Ann Arbor have in August?

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

When are sunrise and 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, sunrise is at 7:00 am and sunset at 8:10 pm EDT.

How many hours of sunshine does Ann Arbor have in August?

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

What are the months with the highest UV index in Ann Arbor?

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

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 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
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 5min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

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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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Ann Arbor, Michigan, USA

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