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

Weather in May

The last month of the spring, May, is a comfortable month in Detroit, Michigan, with average temperature varying between 50.2°F (10.1°C) and 65.3°F (18.5°C).

Temperature

In Detroit, Michigan, the average high-temperature increases, from a fresh 53.1°F (11.7°C) in April, to an enjoyable 65.3°F (18.5°C). In May, in Detroit, the average low-temperature is 50.2°F (10.1°C).

Humidity

In May, the average relative humidity is 75%.

Rainfall

May is the month with the most rainfall in Detroit. Rain falls for 16.8 days and accumulates 2.87" (73mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.3 snowfall days, in May, Detroit aggregates 0.43" (11mm) of snow. In Detroit, during the entire year, snow falls for 54.3 days, and aggregates up to 14.84" (377mm) of snow.

Ocean temperature

In Detroit, the average water temperature is 48.9°F (9.4°C).
Note: Swimming in 48.9°F (9.4°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in Detroit, Michigan, is 14.6h.

Sunshine

The average sunshine in Detroit, Michigan, is 8.9h.

UV index

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in May in Detroit?

In Detroit, Michigan, the average relative humidity in May is 75%.

What is the rainiest month in Detroit?

The month with the most rainfall in Detroit is May when the rain falls for 16.8 days and typically aggregates up to 2.87" (73mm) of precipitation.

How many days does it rain in May in Detroit?

In Detroit, Michigan, during May, the rain falls for 16.8 days and regularly aggregates up to 2.87" (73mm) of precipitation.

What is the last month it snows in Detroit?

May is the last month it regularly snows in Detroit, Michigan. During 0.3 snowfall days, in May, Detroit aggregates 0.43" (11mm) of snow.

What is the ocean temperature in May in Detroit?

In May, the average ocean temperature in Detroit, Michigan, is 48.9°F (9.4°C). Swimming in 48.9°F (9.4°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in May in Detroit?

The average length of the day in May is 14.6h.

How many hours of sunshine does Detroit have in May?

In May, the average sunshine is 8.9h.

How high is the UV index in May in Detroit?

In Detroit, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV radiation.

Average temperature in May
Detroit, MI

Average temperature in May - Detroit, MI
  • Average high temperature in May: 65.3°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 (29.3°F).

  • Average low temperature in May: 50.2°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).

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Average pressure in May
Detroit, MI

Average pressure in May - Detroit, MI
  • Average pressure in May: 29.98"

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

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Average wind speed in May
Detroit, MI

Average wind speed in May - Detroit, MI
  • Average wind speed in May: 8.2mph

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).

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Average humidity in May
Detroit, MI

Average humidity in May - Detroit, MI
  • Average humidity in May: 75%

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

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Average rainfall in May
Detroit, MI

Average rainfall in May - Detroit, MI
  • Average rainfall in May: 2.87"

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

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Average rainfall days in May
Detroit, MI

Average rainfall days in May - Detroit, MI
  • Average rainfall days in May: 16.8 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).

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Average snowfall in May
Detroit, MI

Average snowfall in May - Detroit, MI
  • Average snowfall in May: 0.43"

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

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Average snowfall days in May
Detroit, MI

Average snowfall days in May - Detroit, MI
  • Average snowfall days in May: 0.3 days

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

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Average sea temperature in May
Detroit, MI

Average sea temperature in May - Detroit, MI
  • Average sea temperature in May: 48.9°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).

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Average daylight in May /
Average sunshine in May
Detroit, MI

Average daylight in May / Average sunshine in May - Detroit, MI
  • Average daylight in May: 14.6h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in May: 8.9h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is January (Average sunshine: 3.2h).

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Average sunshine days in May
Detroit, MI

Average sunshine days in May - Detroit, MI
  • Average sunshine days in May: 12.3 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).

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Average UV index in May
Detroit, MI

Average UV index in May - Detroit, MI
  • Average UV index in May: 5

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 May
Detroit, MI

Average cloud cover in May - Detroit, MI
  • Average cloud cover in May: 40

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

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Average visibility in May
Detroit, MI

Average visibility in May - Detroit, MI
  • Average visibility in May: 6mi

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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