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

May 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
May is the rainiest month in Detroit and also the month with the least humidity of 64%. With approximately sixteen and a half rainy days, the average precipitation in May rises to 4.1" (104.1mm). May experiences one of the most enjoyable weather of the year with temperatures in the pleasant range of 51.8°F (11°C) and 68°F (20°C).
Most tourists visit Detroit in May to witness spring in its fullness. Shady, flowery trees bring Detroit striking beauty both during the day and at night. The sun shines for up to eight hours per day, and as the daylight hours elongate to fifteen, it becomes better to tour all the tourist attraction sites and enjoy more outdoor activities like picnics, biking, strolling, and bird watching among others. Packing an umbrella in May in Detroit is essential.
  • The average high temperature in May: 21.1°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 May: 9.7°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 May: 65.3%

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 May: 85.9mm

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 May: 12.1 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 May: 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 May: 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 May: 9°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 May: 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 May: 8.9h

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 May: 7

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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