Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average sea temperature in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The shift from April to May in Grand Marais sees an increase in the average high-temperature, transitioning from a frosty 43.5°F (6.4°C) to a mild 57°F (13.9°C). Grand Marais experiences a nighttime temperature average of 41.2°F (5.1°C) during May.Humidity
May is the least humid month in Grand Marais, with an average relative humidity of 73%.Rainfall
In May, the rain falls for 13.3 days. Throughout May, 1.54" (39mm) of precipitation is accumulated. In Grand Marais, during the entire year, the rain falls for 123.2 days and collects up to 22.17" (563mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Grand Marais, Michigan. May is the last month it regularly snows in Grand Marais. During 1.1 snowfall days, in May, Grand Marais aggregates 0.24" (6mm) of snow. Throughout the year, in Grand Marais, there are 108.1 snowfall days, and 48.31" (1227mm) of snow is accumulated.Ocean temperature
In May, the average ocean temperature in Grand Marais is 37.4°F (3°C).Note: During swimming, this circumstance is both life-threatening and incredibly perilous. The intense cold sensation provokes rapid hyperventilation. The use of a specialized swimsuit is imperative to prevent thermal injuries.
Daylight
In Grand Marais, the average length of the day in May is 15h and 3min.On the first day of May, sunrise is at 6:27 am and sunset at 8:54 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 9:29 pm EDT.
Sunshine
In May, the average sunshine in Grand Marais is 8.7h.UV index
In May, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, an average UV index of 3 transforms into the following instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Grand Marais?
What is the least humid month in Grand Marais?
What is the average humidity in May in Grand Marais?
How many days does it rain in May in Grand Marais?
What is the last month it snows in Grand Marais?
What is the water temperature in May in Grand Marais?
What is the average length of the day in May in Grand Marais?
When are sunrise and sunset in May in Grand Marais?
How many hours of sunshine does Grand Marais have in May?
What is the UV index intensity in May in Grand Marais?
Average temperature in May
Grand Marais, MI
- Average high temperature in May: 57°F
The warmest month (with the highest average high temperature) is July (72.1°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in May: 41.2°F
The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is February (13.6°F).
Average pressure in May
Grand Marais, MI
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Grand Marais, MI
- Average wind speed in May: 8mph
The windiest month (with the highest average wind speed) is November (10.1mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in May
Grand Marais, MI
- Average humidity in May: 73%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (73%).
Average rainfall in May
Grand Marais, MI
- Average rainfall in May: 1.54"
The wettest month (with the highest rainfall) is October (2.8").
The driest month (with the least rainfall) is March (1.5").
Average rainfall days in May
Grand Marais, MI
- Average rainfall days in May: 13.3 days
The month with the highest number of rainy days is October (15.3 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in May
Grand Marais, MI
- Average snowfall in May: 0.24"
The month with the highest snowfall is January (10.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Grand Marais, MI
- Average snowfall days in May: 1.1 days
The month with the highest number of snowfall days is January (24.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in May
Grand Marais, MI
- Average sea temperature in May: 37°F
The best month for swimming (with the highest average sea temperature) is August (59°F).
The coldest months (with the lowest average sea temperature) are March and April (36°F).
Average daylight in May /
Average sunshine in May
Grand Marais, MI
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 1h and 36min).
Average sunshine days in May
Grand Marais, MI
- Average sunshine days in May: 15.3 days
The month with the most sunshine days is June (16.3 days).
The month with the least sunshine days is January (5.8 days).
Average UV index in May
Grand Marais, MI
- Average UV index in May: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in May
Grand Marais, MI
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in May
Grand Marais, MI
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Grand Marais, Michigan, USA
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