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

July 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
July is the peak of summer with the warmest weather recorded during the year. The average temperatures lie in the range of 68°F (20°C) and 82.4°F (28°C), with occasional hotter days recording up to 93.2°F (34°C). The nights are much cooler with temperatures dropping to 63.5°F (17.5°C), which is tolerable by most people.
Afternoon showers are received for fourteen days in July, and the average precipitation reads 3.5" (88.9mm).
The daylight hours are elongated to fifteen making a good time to join in the Detroit local festivals, music expeditions, art gallery fairs, and classic car cruises.
  • The average high temperature in July: 28.6°C

The warmest month (with the highest average high temperature) is July (28.6°C).
The month with the lowest average high temperature is January (0°C).

  • The average low temperature in July: 17.7°C

The month with the highest average low temperature is July (17.7°C).
The coldest month (with the lowest average low temperature) is January (-7.2°C).

  • The average humidity in July: 68.5%

The month with the highest relative humidity is December (76.7%).
The month with the lowest relative humidity is May (65.3%).

  • The average rainfall in July: 85.6mm

The wettest month (with the highest rainfall) is June (89.4mm).
The driest month (with the lowest rainfall) is January (49.8mm).

  • The average rainfall days in July: 10.4 days

The month with the highest number of rainy days is December (13.7 days).
The month with the lowest number of rainy days is September (9.5 days).

  • The average snowfall in July: 0mm

The month with the highest snowfall is January (317.5mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

  • The average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (10.4 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

  • The average sea temperature in July: 21°C

The best month for swimming (with the highest average sea temperature) is August (23°C).
Coldest months (with the lowest average sea temperature) are February and March (2°C).

  • The average daylight in July: 15h

Months with the longest days are May, June and July (Average daylight: 15h).
Months with shortest days are January and December (Average daylight: 9h).

  • The average sunshine in July: 10.2h

The month with most sunshine is July (Average sunshine: 10.2h).
The month with least sunshine is December (Average sunshine: 2.8h).

  • The average UV index in July: 9

The month with the highest UV index is July (UV index 9).
Months with the lowest UV index are January and December (UV index 1).

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