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 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
May's arrival is marked by an increase in the average high-temperature, moving from an icy 39.7°F (4.3°C) in April to a cool 51.4°F (10.8°C). During May, Grand Marais experiences an average low-temperature of 39.9°F (4.4°C) at night.Humidity
May is the least humid month, with an average relative humidity of 74%.Rainfall
In Grand Marais, during May, the rain falls for 14.8 days and regularly aggregates up to 2.13" (54mm) of precipitation. Throughout the year, in Grand Marais, there are 134.4 rainfall days, and 21.42" (544mm) of precipitation is accumulated.Snowfall
Months with snowfall in Grand Marais, Minnesota, are January through May, October through December. May is the last month it regularly snows. During 1.1 snowfall days, in May, Grand Marais aggregates 0.16" (4mm) of snow. In Grand Marais, during the entire year, snow falls for 87.3 days and aggregates up to 30.2" (767mm) of snow.Daylight
The average length of the day in May is 15h and 10min.On the first day of May in Grand Marais, sunrise is at 5:42 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 5:07 am and sunset at 8:51 pm CDT.
Sunshine
The average sunshine in May is 9h.UV index
The average daily maximum UV index in May is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In May, a regular UV index of 3 translates into these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Grand Marais in May?
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 average length of the day in May in Grand Marais?
When is the sunrise / 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, MN
- Average high temperature in May: 51.4°F
The warmest month (with the highest average high temperature) is August (68°F).
The month with the lowest average high temperature is January (18.3°F).
- Average low temperature in May: 39.9°F
The month with the highest average low temperature is August (56.5°F).
The coldest month (with the lowest average low temperature) is January (8.1°F).
Average pressure in May
Grand Marais, MN
- Average pressure in May: 29.97"Hg
The months with the highest atmospheric pressure are February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in May
Grand Marais, MN
- Average wind speed in May: 8.1mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in May
Grand Marais, MN
- Average humidity in May: 74%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (74%).
Average rainfall in May
Grand Marais, MN
- Average rainfall in May: 2.13"
The wettest month (with the highest rainfall) is July (2.36").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in May
Grand Marais, MN
- Average rainfall days in May: 14.8 days
The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in May
Grand Marais, MN
- Average snowfall in May: 0.16"
The month with the highest snowfall is December (6.5").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Grand Marais, MN
- Average snowfall days in May: 1.1 days
The month with the highest number of snowfall days is January (18.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Grand Marais, MN
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in May
Grand Marais, MN
- Average sunshine days in May: 13.9 days
The month with the most sunshine days is September (15.2 days).
The month with the least sunshine days is January (10.3 days).
Average UV index in May
Grand Marais, MN
- Average UV index in May: 3
The month with the highest UV index is July (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, MN
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in May
Grand Marais, MN
- 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).
Grand Marais, Minnesota, USA
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