May weather forecastDetroit, MI
May
Weather in May
May brings a real promise of spring to Detroit with higher temperatures around 65.3°F (18.5°C). Transitioning from April, the days become longer and warmer. The city is beautifully awash with blooming plants and vibrant greenery. Light clothing becomes standard as residents prepare for eventual summer heat. Enjoying sunny days outside becomes even more desirable, with the Detroit Riverwalk attracting both locals and tourists.Temperature
May's arrival coincides with a temperature rise, moving from April's cool 53.1°F (11.7°C) to an enjoyable 65.3°F (18.5°C). Throughout the nights in May, an average low-temperature of 50.2°F (10.1°C) is noted.Humidity
The average relative humidity in May is 75%.Rainfall
The month with the most rainfall is May, when the rain falls for 16.8 days and typically aggregates up to 2.87" (73mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Detroit. During 0.3 snowfall days, in May, Detroit aggregates 0.43" (11mm) of snow. Throughout the year, there are 54.3 snowfall days, and 14.84" (377mm) of snow is accumulated.Ocean temperature
In May, the average ocean temperature is 48.9°F (9.4°C).Note: It is advised against swimming in 48.9°F (9.4°C) when it drops below 50°F (10°C). Such temperatures can cause extreme cold shock, leading to hyperventilation.
Daylight
In May, the average length of the day is 14h and 37min.On the first day of the month, sunrise is at 6:26 am and sunset at 8:32 pm. On the last day of May, sunrise is at 5:58 am and sunset at 9:01 pm EDT.
Sunshine
The average sunshine in May is 8.9h.UV index
In Detroit, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: A maximum daily UV index of 5 during May morphs into the following directions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
Average pressure in May
Detroit, MI
- Average pressure in May: 29.98"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 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).
Average humidity in May
Detroit, MI
- Average humidity in May: 75%
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 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").
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).
Average snowfall in May
Detroit, MI
- Average snowfall in May: 0.43"
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 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).
The months with the least snowfall days are June, July, August and September (0 days).
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).
Average daylight in May /
Average sunshine in May
Detroit, MI
- Average daylight in May: 14h and 36min
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 May: 8h and 54min
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 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).
Average UV index in May
Detroit, MI
- Average UV index in May: 5
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 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).
Average visibility in May
Detroit, MI
- Average visibility in May: 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).
