July weather forecast
Detroit, MI

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The downtown city of Detroit, Michigan viewed from a bird
The downtown city of Detroit, Michigan viewed from a bird's eye angle

Weather in July

July is one of the hottest periods in Detroit with higher temperature averages of approximately 79.9°F (26.6°C). The ample sunshine, combined with lighter winds, makes for the perfect opportunity to explore Detroit's numerous parks and outdoor entertainment options. Summer parties, music festivals, and outdoor dining are dominant in Detroit's social scene. Activities near the Detroit River are popular as the river provides a scenic backdrop and freshness during the hot weather. Despite the heat, Detroit maintains a lively atmosphere throughout July.

Temperature

Temperature records mark July as the warmest month, with highs averaging 79.9°F (26.6°C) and lows at 65.8°F (18.8°C).

Humidity

The months with the lowest humidity are July and August, with an average relative humidity of 73%.

Rainfall

In Detroit, in July, during 16.5 rainfall days, 2.32" (59mm) of precipitation is typically accumulated. In Detroit, during the entire year, the rain falls for 152.1 days and collects up to 23.43" (595mm) of precipitation.

Snowfall

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

Ocean temperature

In July, the average ocean temperature is 74.8°F (23.8°C).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 74.8°F (23.8°C) water. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)

Daylight

In July, the average length of the day is 14h and 55min.
On the first day of July, sunrise is at 5:59 am and sunset at 9:12 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 8:52 pm EDT.

Sunshine

July has the most sunshine of the year in Detroit, with an average of 10.6h of sunshine.

UV index

The months with the highest UV index in Detroit are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: An average UV index of 6 in July transforms into this advice:
Shield from overexposure. Defense against sun-related harm is required. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Alert! UV radiation becomes sharper due to reflections from sand and water.
Updated: Jun 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the warmest months?

In Detroit, the average highest temperatures are observed in July, with a high of 79.9°F (26.6°C) and a low of 65.8°F (18.8°C).

What is the average July temperature in Detroit?

The high-temperature during July is 79.9°F (26.6°C) and the low-temperature is 65.8°F (18.8°C).

What are the least humid months?

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

What is the average humidity in July?

In July, the average relative humidity is 73%.

How much does it rain in July?

In Detroit, during July, the rain falls for 16.5 days and regularly aggregates up to 2.32" (59mm) of precipitation.

When it does not snow?

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

What is the ocean temperature in July?

In July, the average ocean temperature is 74.8°F (23.8°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 74.8°F (23.8°C) water may be enjoyable.

How many hours of daylight does Detroit have in July?

The average day length in July is 14h and 55min.

What time are sunrise and sunset in July?

In July, on the first day of the month, sunrise is at 5:59 am and sunset at 9:12 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 8:52 pm EDT.

What month has the most sunshine in Detroit?

July has the most sunshine of the year, with an average of 10.6h of sunshine.

How long on average sun shines in July?

In Detroit, the average sunshine duration in July is 10.6h.

What is the month with the highest UV index?

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

What is the UV index intensity in July?

The average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to 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 July
Detroit, MI

Average temperature in July - Detroit, MI
  • Average high temperature in July: 79.9°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 July: 65.8°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 pressure in July
Detroit, MI

Average pressure in July - Detroit, MI
  • Average pressure in July: 29.96"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in July
Detroit, MI

Average wind speed in July - Detroit, MI
  • Average wind speed in July: 6.8mph

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).

Average humidity in July
Detroit, MI

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

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

Average rainfall in July
Detroit, MI

Average rainfall in July - Detroit, MI
  • Average rainfall in July: 2.32"

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

Average rainfall days in July
Detroit, MI

Average rainfall days in July - Detroit, MI
  • Average rainfall days in July: 16.5 days

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

Average snowfall in July
Detroit, MI

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

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

Average snowfall days in July
Detroit, MI

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

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

Average sea temperature in July
Detroit, MI

Average sea temperature in July - Detroit, MI
  • Average sea temperature in July: 74.7°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 July /
Average sunshine in July
Detroit, MI

Average daylight in July / Average sunshine in July - Detroit, MI
  • Average daylight in July: 14h 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 July: 10h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

Average sunshine days in July
Detroit, MI

Average sunshine days in July - Detroit, MI
  • Average sunshine days in July: 12.4 days

The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is February (10.7 days).

Average UV index in July
Detroit, MI

Average UV index in July - Detroit, MI
  • Average UV index in July: 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).

Average cloud cover in July
Detroit, MI

Average cloud cover in July - Detroit, MI
  • Average cloud cover in July: 27

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in July
Detroit, MI

Average visibility in July - Detroit, MI
  • Average visibility in July: 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).

Detroit, Michigan, USA

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